About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will lead the mechanical hardware design of high-performance structural systems for Helion's fusion devices. Your role will focus on solving complex, high-impact problems that influence system performance, while also growing a high-performing engineering team. You will establish technical standards, drive execution, and shape design processes to increase the speed and quality of innovation. You will report to the Senior Manager of Engineering, and this is an onsite role located at our Everett, WA office.
You Will:
Grow and mentor a team of multidisciplinary structural and mechanical engineers
Oversee design of machine architecture, high-performance structural systems, shielding, and piece part + assembly design
Drive high-level architectural decisions on neutron shielding, primary structures, racking, and plant design schemes
Lead design, analysis, and manufacturing process improvements to increase throughput
Collaborate with Research, Science, Electrical, and Controls teams to derive requirements and meet program goals
Required Skills:
Bachelor's degree in Engineering
5+ years of structural/mechanical engineering experience, including 2+ years in an engineering management role
Demonstrated ability to hire and grow engineers providing impactful career development
Experience leading multidisciplinary teams with full-scope project ownership
Proven ability to manage complex engineering projects with schedule accountability
Hands-on exposure to multiple engineering disciplines such as mechanical, thermal, and large structures
Ability to apply engineering first-principles and structured problem-solving to technical challenges
#LI-Onsite, #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will lead the mechanical hardware design of high-performance structural systems for Helion's fusion devices. Your role will focus on solving complex, high-impact problems that influence system performance, while also growing a high-performing engineering team. You will establish technical standards, drive execution, and shape design processes to increase the speed and quality of innovation. You will report to the Senior Manager of Engineering, and this is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Grow and mentor a team of multidisciplinary structural and mechanical engineers\n\n - Oversee design of machine architecture, high-performance structural systems, shielding, and piece part + assembly design \n\n - Drive high-level architectural decisions on neutron shielding, primary structures, racking, and plant design schemes\n\n - Lead design, analysis, and manufacturing process improvements to increase throughput\n\n - Collaborate with Research, Science, Electrical, and Controls teams to derive requirements and meet program goals\n\nRequired Skills:\n\n - Bachelor's degree in Engineering\n\n - 5+ years of structural/mechanical engineering experience, including 2+ years in an engineering management role\n\n - Demonstrated ability to hire and grow engineers providing impactful career development\n\n - Experience leading multidisciplinary teams with full-scope project ownership\n\n - Proven ability to manage complex engineering projects with schedule accountability\n\n - Hands-on exposure to multiple engineering disciplines such as mechanical, thermal, and large structures\n\n - Ability to apply engineering first-principles and structured problem-solving to technical challenges\n\n#LI-Onsite, #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"05b910bc-8c44-41e4-8ee8-3ccdec7b9a6f","title":"Senior Firmware Engineer","department":"Software Engineering","team":"Software Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-12-19T19:18:03.427+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/05b910bc-8c44-41e4-8ee8-3ccdec7b9a6f","applyUrl":"https://jobs.ashbyhq.com/helion/05b910bc-8c44-41e4-8ee8-3ccdec7b9a6f/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
As a Senior Firmware Engineer, you will develop the embedded systems that power the control, diagnostics, and protection layers of our fusion machines. You’ll write and maintain firmware that runs on thousands of distributed embedded devices controlling and monitoring tens of thousands of sensors, actuators, and data channels. This role bridges hardware and software — you’ll work closely with electrical and software engineers to design reliable, scalable, and high-performance control and data acquisition systems. You’ll help define communication protocols, improve time synchronization across embedded networks, and automate hardware bring-up and testing. This position is ideal for an engineer who enjoys working close to the metal, debugging complex systems, and rapidly iterating on real-world hardware to make fusion power a practical reality. This role requires onsite presence, and you will report directly to our Lead Electrical Engineer at our Everett, WA, office.
You Will:
Develop, test, and maintain firmware for real-time embedded systems used in machine control and diagnostics.
Work closely with hardware and software engineers to translate system requirements into embedded designs.
Bring up new boards, sensors, and actuators — debugging with oscilloscopes, logic analyzers, and JTAG interfaces.
Implement and maintain low-level communication protocols (UART, SPI, I²C, CAN, EtherCAT, etc.).
Design and refine embedded command interfaces, configuration utilities, and automated test frameworks.
Optimize performance, reliability, and timing synchronization across distributed embedded systems.
Contribute to continuous improvement of embedded toolchains, build systems, and test automation.
Rapidly prototype novel control and measurement concepts to support new machine architectures.
Collaborate across disciplines to ensure firmware integrates seamlessly with high-level software and data systems.
Required Skills:
BS or higher in Electrical Engineering, Computer Engineering, or Computer Science.
8+ years of experience developing embedded systems in C, C++, and/or Rust.
Experience with real-time MCU development (bare metal or RTOS-based).
Strong understanding of digital communication protocols (UART, SPI, I²C).
Familiarity with mixed-signal circuit design and debugging using oscilloscopes, DMMs, and logic analyzers.
Experience with version control systems (Git).
Scripting experience in Python for automation, hardware bring-up, or testing.
Solid grasp of embedded systems fundamentals: power, timing, data, and memory budgets.
Experience developing and debugging on Linux-based systems.
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nAs a Senior Firmware Engineer, you will develop the embedded systems that power the control, diagnostics, and protection layers of our fusion machines. You’ll write and maintain firmware that runs on thousands of distributed embedded devices controlling and monitoring tens of thousands of sensors, actuators, and data channels. This role bridges hardware and software — you’ll work closely with electrical and software engineers to design reliable, scalable, and high-performance control and data acquisition systems. You’ll help define communication protocols, improve time synchronization across embedded networks, and automate hardware bring-up and testing. This position is ideal for an engineer who enjoys working close to the metal, debugging complex systems, and rapidly iterating on real-world hardware to make fusion power a practical reality. This role requires onsite presence, and you will report directly to our Lead Electrical Engineer at our Everett, WA, office.\n\nYou Will:\n\n - Develop, test, and maintain firmware for real-time embedded systems used in machine control and diagnostics.\n\n - Work closely with hardware and software engineers to translate system requirements into embedded designs.\n\n - Bring up new boards, sensors, and actuators — debugging with oscilloscopes, logic analyzers, and JTAG interfaces.\n\n - Implement and maintain low-level communication protocols (UART, SPI, I²C, CAN, EtherCAT, etc.).\n\n - Design and refine embedded command interfaces, configuration utilities, and automated test frameworks.\n\n - Optimize performance, reliability, and timing synchronization across distributed embedded systems.\n\n - Contribute to continuous improvement of embedded toolchains, build systems, and test automation.\n\n - Rapidly prototype novel control and measurement concepts to support new machine architectures.\n\n - Collaborate across disciplines to ensure firmware integrates seamlessly with high-level software and data systems.\n\nRequired Skills:\n\n - BS or higher in Electrical Engineering, Computer Engineering, or Computer Science.\n\n - 8+ years of experience developing embedded systems in C, C++, and/or Rust.\n\n - Experience with real-time MCU development (bare metal or RTOS-based).\n\n - Strong understanding of digital communication protocols (UART, SPI, I²C).\n\n - Familiarity with mixed-signal circuit design and debugging using oscilloscopes, DMMs, and logic analyzers.\n\n - Experience with version control systems (Git).\n\n - Scripting experience in Python for automation, hardware bring-up, or testing.\n\n - Solid grasp of embedded systems fundamentals: power, timing, data, and memory budgets.\n\n - Experience developing and debugging on Linux-based systems.\n\n#LI-Onsite #LI-KL1\n\n \n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"09454fbe-75df-472b-adbe-016de6180fe8","title":"Senior Computational Plasma Scientist - MHD","department":"Science","team":"Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-02-11T23:40:08.768+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/09454fbe-75df-472b-adbe-016de6180fe8","applyUrl":"https://jobs.ashbyhq.com/helion/09454fbe-75df-472b-adbe-016de6180fe8/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
Helion is hiring a Computational Plasma Engineer. You will communicate with engineers and scientists on wide range of topics including plasma physics; magnetic field diffusion and eddy currents; circuit response and coupling; and structural mechanics. You will report to our Manager of Computational Science at our Everett, WA office.
You Will:
Run our internal MHD code to simulate FRC dynamics for wide range of simulation conditions from the initial simulation setup to the postprocessing of the results
Calculate FRC dynamics, circuit response, and magnetic loads to help develop our fusion generators
Perform analysis to interpret experimental measurements by reproducing the experimental conditions with our internal MHD code
Collaborate with and learn from experts to expand your technical skillset and domain knowledge
Communicate simulation results and findings with accuracy and rigor to both scientists and engineers by preparing reports, presentations, and graphics
Required Skills:
PhD. in Plasma Physics, Applied Physics, Computational Physics, Nuclear Engineering, Aerospace Engineering, or a related technical field
5+ years of experience running, analyzing, or interpreting MHD simulations in academic, national lab, or industry settings
Knowledge of magnetic field diffusion and eddy currents
Ability to understand FRC physics
Experience writing scripts to analyze output, parse files, and create plots in a common coding language (e.g. MATLAB, Fortran, C, Python, etc.)
Experience with MATLAB and Fortran
Experience using computer simulation tools for circuit dynamics, fluid dynamics, transient magnetics, or plasma dynamics
#LI-ONSITE #LI-AM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nHelion is hiring a Computational Plasma Engineer. You will communicate with engineers and scientists on wide range of topics including plasma physics; magnetic field diffusion and eddy currents; circuit response and coupling; and structural mechanics. You will report to our Manager of Computational Science at our Everett, WA office.\n\nYou Will:\n\n - Run our internal MHD code to simulate FRC dynamics for wide range of simulation conditions from the initial simulation setup to the postprocessing of the results \n\n - Calculate FRC dynamics, circuit response, and magnetic loads to help develop our fusion generators \n\n - Perform analysis to interpret experimental measurements by reproducing the experimental conditions with our internal MHD code \n\n - Collaborate with and learn from experts to expand your technical skillset and domain knowledge \n\n - Communicate simulation results and findings with accuracy and rigor to both scientists and engineers by preparing reports, presentations, and graphics \n\nRequired Skills:\n\n - PhD. in Plasma Physics, Applied Physics, Computational Physics, Nuclear Engineering, Aerospace Engineering, or a related technical field\n\n - 5+ years of experience running, analyzing, or interpreting MHD simulations in academic, national lab, or industry settings\n\n - Knowledge of magnetic field diffusion and eddy currents \n\n - Ability to understand FRC physics \n\n - Experience writing scripts to analyze output, parse files, and create plots in a common coding language (e.g. MATLAB, Fortran, C, Python, etc.) \n\n - Experience with MATLAB and Fortran \n\n - Experience using computer simulation tools for circuit dynamics, fluid dynamics, transient magnetics, or plasma dynamics\n\n#LI-ONSITE #LI-AM1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"0cbe8d0c-3a85-483f-b9e0-7460d6f3bd1b","title":"Senior Electrical Engineer","department":"Electrical Engineering","team":"Electrical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2024-12-19T22:46:49.734+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/0cbe8d0c-3a85-483f-b9e0-7460d6f3bd1b","applyUrl":"https://jobs.ashbyhq.com/helion/0cbe8d0c-3a85-483f-b9e0-7460d6f3bd1b/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will support the core energy management systems that power Helion’s fusion generators. Your work will focus on high-power electrical systems including energy delivery to pulsed magnetics, energy recovery systems, internal redistribution networks, and grid-tie infrastructure. You will design, commission, and optimize systems that are foundational to delivering clean, low-cost electricity to the world. You will report to the Senior Manager of Electrical Engineering and this is an onsite role located at our Everett, WA office.
You Will:
Design, test, troubleshoot, and support high-voltage power systems for pulsed magnetic coils
Oversee design, procurement, construction, and commissioning of systems delivering <1 ms pulses up to 5 MA and 40 kV
Develop system architectures and collaborate with designers on schematics and installation drawings
Lead design reviews to validate cost-effective, scalable, and reliable solutions
Support commissioning and lifetime operation of generator power systems, identifying paths to optimize future builds
Apply rigorous engineering practices, including ownership of cost, schedule, and resource planning for assigned projects
Mentor electrical engineers and collaborate with cross-functional teams to build technical capability across Helion
Required Skills:
8+ years experience in power electronics, solving complex electrical engineering problems from design to delivery
Bachelor’s or Master’s degree in Electrical Engineering, Physics, or a related field
Experience designing, fabricating, installing, and testing electronic systems
Strong knowledge of solid-state switching technologies and power components such as IGBTs, MOSFETs, and SCRs
Technical depth in engineering principles, codes, and practices with experience coordinating deliverables to meet milestones
Advanced troubleshooting skills with standard benchtop tools (oscilloscopes, E-loads, pulse generators, spectrum analyzers) and PCB design software
Proficiency with tools such as Microsoft Office, LTSpice, SIMetrix/SIMPLIS, Altium, and MATLAB
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will support the core energy management systems that power Helion’s fusion generators. Your work will focus on high-power electrical systems including energy delivery to pulsed magnetics, energy recovery systems, internal redistribution networks, and grid-tie infrastructure. You will design, commission, and optimize systems that are foundational to delivering clean, low-cost electricity to the world. You will report to the Senior Manager of Electrical Engineering and this is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Design, test, troubleshoot, and support high-voltage power systems for pulsed magnetic coils\n\n - Oversee design, procurement, construction, and commissioning of systems delivering <1 ms pulses up to 5 MA and 40 kV\n\n - Develop system architectures and collaborate with designers on schematics and installation drawings\n\n - Lead design reviews to validate cost-effective, scalable, and reliable solutions\n\n - Support commissioning and lifetime operation of generator power systems, identifying paths to optimize future builds\n\n - Apply rigorous engineering practices, including ownership of cost, schedule, and resource planning for assigned projects\n\n - Mentor electrical engineers and collaborate with cross-functional teams to build technical capability across Helion\n\nRequired Skills:\n\n - 8+ years experience in power electronics, solving complex electrical engineering problems from design to delivery\n\n - Bachelor’s or Master’s degree in Electrical Engineering, Physics, or a related field\n\n - Experience designing, fabricating, installing, and testing electronic systems \n\n - Strong knowledge of solid-state switching technologies and power components such as IGBTs, MOSFETs, and SCRs\n\n - Technical depth in engineering principles, codes, and practices with experience coordinating deliverables to meet milestones\n\n - Advanced troubleshooting skills with standard benchtop tools (oscilloscopes, E-loads, pulse generators, spectrum analyzers) and PCB design software\n\n - Proficiency with tools such as Microsoft Office, LTSpice, SIMetrix/SIMPLIS, Altium, and MATLAB\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"0e786f93-c149-41eb-b8ba-7eb41df18b13","title":"Knowledge Systems Engineer - Fusion Systems","department":"Research & Development ","team":"Research & Development ","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-05-05T17:49:48.590+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/0e786f93-c149-41eb-b8ba-7eb41df18b13","applyUrl":"https://jobs.ashbyhq.com/helion/0e786f93-c149-41eb-b8ba-7eb41df18b13/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
We’re looking for someone to build Helion’s internal knowledge foundation from the ground up—capturing operational procedures, experimental insights, and machine behavior—and turning that into a structured, scalable system that can support AI-assisted workflows and future automation.
This role spans documentation, data structuring, and applied AI. You’ll work directly with engineers and operators to turn fragmented, implicit, and fast-changing knowledge into something durable, searchable, and actionable. This is a hands-on, applied role focused on building systems around LLMs and operational data—not training models from scratch. This is an onsite role that reports directly to the Research and Development Manager at our Everett, WA office.
You Will:
Capture & document procedures, experiments, and workflows by partnering with engineers and operators to turn fragmented knowledge into clear runbooks
Structure & standardize documentation through docs-as-code practices, including versioning, formatting, reviews, and defined schemas
Integrate & organize data by linking documentation with logs, configs, and analysis outputs to improve consistency and clarity
Develop AI-assisted tools by partnering with software engineers to inform LLM-powered solutions
Prototype automation through lightweight agents and workflows (e.g., run summaries, anomaly investigation) while laying the foundation for more advanced systems
Required Skills:
Experience with data or knowledge modeling (schemas, metadata, ontologies)
Experience with technical documentation systems (e.g., Confluence/Jira or similar)
Strong software engineering skills (Python or similar)
Ability to structure ambiguous information into structured systems
Experience working with domain experts to extract knowledge
Preferred Skills:
Experience building internal tools for engineering teams
Exposure to CAD or engineering design tools
Experience using LLM APIs (e.g., OpenAI, Claude) in production systems
Experience building LLM-powered tools (RAG, search, etc.)
Exposure to large scale hardware environment
#LI-Onsite #LI-IB1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nWe’re looking for someone to build Helion’s internal knowledge foundation from the ground up—capturing operational procedures, experimental insights, and machine behavior—and turning that into a structured, scalable system that can support AI-assisted workflows and future automation.\n\nThis role spans documentation, data structuring, and applied AI. You’ll work directly with engineers and operators to turn fragmented, implicit, and fast-changing knowledge into something durable, searchable, and actionable. This is a hands-on, applied role focused on building systems around LLMs and operational data—not training models from scratch. This is an onsite role that reports directly to the Research and Development Manager at our Everett, WA office.\n\nYou Will:\n\n - Capture & document procedures, experiments, and workflows by partnering with engineers and operators to turn fragmented knowledge into clear runbooks\n\n - Structure & standardize documentation through docs-as-code practices, including versioning, formatting, reviews, and defined schemas\n\n - Integrate & organize data by linking documentation with logs, configs, and analysis outputs to improve consistency and clarity\n\n - Develop AI-assisted tools by partnering with software engineers to inform LLM-powered solutions\n\n - Prototype automation through lightweight agents and workflows (e.g., run summaries, anomaly investigation) while laying the foundation for more advanced systems\n\n\n\nRequired Skills:\n\n - Experience with data or knowledge modeling (schemas, metadata, ontologies)\n\n - Experience with technical documentation systems (e.g., Confluence/Jira or similar)\n\n - Strong software engineering skills (Python or similar)\n\n - Ability to structure ambiguous information into structured systems\n\n - Experience working with domain experts to extract knowledge\n\n\n\nPreferred Skills:\n\n - Experience building internal tools for engineering teams\n\n - Exposure to CAD or engineering design tools\n\n - Experience using LLM APIs (e.g., OpenAI, Claude) in production systems\n\n - Experience building LLM-powered tools (RAG, search, etc.)\n\n - Exposure to large scale hardware environment\n\n #LI-Onsite #LI-IB1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"1166ef84-864f-4c6d-8469-def0345a2508","title":"People Operations Coordinator (Contract)","department":"People","team":"People","employmentType":"Contract","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-03T16:14:36.882+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/1166ef84-864f-4c6d-8469-def0345a2508","applyUrl":"https://jobs.ashbyhq.com/helion/1166ef84-864f-4c6d-8469-def0345a2508/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
This is a 6-month contract with the opportunity for extension.
What You Will Be Doing:
At Helion, you will play a role in supporting the employee experience while ensuring our People systems and processes scale with the company. You'll partner with our greater People Ops team to keep core programs running smoothly, maintain data integrity, and help build a strong foundation for growth. This is an onsite role at our Everett, WA office.
You Will:
Partner with the People Operations team to support initiatives and programs that enhance the employee experience
Serve as a trusted resource for employees, responding to questions related to systems or processes with care and professionalism
Maintain employee records and reporting requirements, ensuring compliance, confidentiality, and data integrity
Identify opportunities to streamline workflows, improve processes, and enhance operational effectiveness as the company grows
Required Skills:
1+ years of experience in Human Resources, People Operations, administration, customer support, or a related field
Experience handling confidential and sensitive information with compliance
Experience communicating clearly and effectively, with the ability to partner across teams
Comfortability managing multiple priorities and providing excellent employee support
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\nThis is a 6-month contract with the opportunity for extension.\n\n\nWhat You Will Be Doing:\n\nAt Helion, you will play a role in supporting the employee experience while ensuring our People systems and processes scale with the company. You'll partner with our greater People Ops team to keep core programs running smoothly, maintain data integrity, and help build a strong foundation for growth. This is an onsite role at our Everett, WA office.\n\nYou Will:\n\n - Partner with the People Operations team to support initiatives and programs that enhance the employee experience\n\n - Serve as a trusted resource for employees, responding to questions related to systems or processes with care and professionalism\n\n - Maintain employee records and reporting requirements, ensuring compliance, confidentiality, and data integrity\n\n - Identify opportunities to streamline workflows, improve processes, and enhance operational effectiveness as the company grows\n\nRequired Skills:\n\n - 1+ years of experience in Human Resources, People Operations, administration, customer support, or a related field\n\n - Experience handling confidential and sensitive information with compliance\n\n - Experience communicating clearly and effectively, with the ability to partner across teams\n\n - Comfortability managing multiple priorities and providing excellent employee support\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"1170a020-6c60-4449-86b5-55ea0bbde734","title":"Senior Materials Engineer, Diagnostics","department":"Material Science","team":"Material Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-04-08T18:47:58.918+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/1170a020-6c60-4449-86b5-55ea0bbde734","applyUrl":"https://jobs.ashbyhq.com/helion/1170a020-6c60-4449-86b5-55ea0bbde734/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
We are looking for a Senior Materials Engineer, Diagnostics to lead the development of materials health monitoring for Helion’s fusion generators. You will design, qualify, and deploy in-situ and ex-situ diagnostics to detect and quantify materials degradation under combined stimuli, including thermomechanical stress, radiation, high electric fields, and coolant environments.
You will work cross-functionally with Materials, Research, and Engineering teams to translate failure modes into measurable signals and integrate diagnostics into hardware and predictive models. This onsite role is based in Everett, WA.
You Will:
Develop and deploy in-situ and ex-situ diagnostics for degradation and failure in fusion-relevant materials and components (e.g., first wall, magnets, insulators, capacitors, HV interfaces, seals)
Translate failure and degradation modes into measurable signals using sensors, inspection methods, or indirect indicators
Design and execute coupled-stimuli experiments and post-irradiation examinations (PIE) to validate diagnostic methods
Build test matrices and analysis plans linking microstructural evolution to sensor outputs and component performance
Own the materials diagnostics roadmap by converting risk assessments into diagnostic requirements (what to measure, where, how often, and accuracy)
Collaborate with design engineers to embed diagnostics into hardware and ensure compatibility with system constraints
Partner with modeling teams to integrate diagnostic outputs into predictive models and maintenance strategies
Productize diagnostic methods and sensors for reliable deployment in fusion environments
Document test plans, procedures, and design guidance; communicate results, risks, and recommendations across teams
Required Skills:
BS with 10+ years, or MS/PhD with 5+ years, in Materials Science, Materials Engineering, Applied Physics, Nuclear Engineering, or related field
5+ years (with PhD or MS) or 10+ years (with BS) of experience in at least one of:
Materials diagnostics / NDE / SHM (strain, acoustic, optical, EM, fiberoptic, etc.).
Familiarity with data analysis / feature extraction for degradation detection (Python preferred).
Experience designing and executing coupled-stimuli experiments (e.g., thermomechanical, electrothermal, irradiation with stress)
Experience embedding or integrating sensors into structural materials (ceramics, composites, polymers, or metals)
Preferred Skills:
Experience in fusion, fission, accelerator, or high-radiation environments
Experience with radiation effects and post-irradiation examination (PIE)
Familiarity with high-voltage systems or safety-critical experimental environments
#LI-TM1 #LI-Onsite
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nWe are looking for a Senior Materials Engineer, Diagnostics to lead the development of materials health monitoring for Helion’s fusion generators. You will design, qualify, and deploy in-situ and ex-situ diagnostics to detect and quantify materials degradation under combined stimuli, including thermomechanical stress, radiation, high electric fields, and coolant environments.\n\nYou will work cross-functionally with Materials, Research, and Engineering teams to translate failure modes into measurable signals and integrate diagnostics into hardware and predictive models. This onsite role is based in Everett, WA.\n\nYou Will:\n\n - Develop and deploy in-situ and ex-situ diagnostics for degradation and failure in fusion-relevant materials and components (e.g., first wall, magnets, insulators, capacitors, HV interfaces, seals)\n\n - Translate failure and degradation modes into measurable signals using sensors, inspection methods, or indirect indicators\n\n - Design and execute coupled-stimuli experiments and post-irradiation examinations (PIE) to validate diagnostic methods\n\n - Build test matrices and analysis plans linking microstructural evolution to sensor outputs and component performance\n\n - Own the materials diagnostics roadmap by converting risk assessments into diagnostic requirements (what to measure, where, how often, and accuracy)\n\n - Collaborate with design engineers to embed diagnostics into hardware and ensure compatibility with system constraints\n\n - Partner with modeling teams to integrate diagnostic outputs into predictive models and maintenance strategies\n\n - Productize diagnostic methods and sensors for reliable deployment in fusion environments\n\n - Document test plans, procedures, and design guidance; communicate results, risks, and recommendations across teams\n\nRequired Skills:\n\n - BS with 10+ years, or MS/PhD with 5+ years, in Materials Science, Materials Engineering, Applied Physics, Nuclear Engineering, or related field\n\n - 5+ years (with PhD or MS) or 10+ years (with BS) of experience in at least one of:\n \n - Materials diagnostics / NDE / SHM (strain, acoustic, optical, EM, fiberoptic, etc.).\n \n - Familiarity with data analysis / feature extraction for degradation detection (Python preferred).\n\n - Experience designing and executing coupled-stimuli experiments (e.g., thermomechanical, electrothermal, irradiation with stress)\n\n - Experience embedding or integrating sensors into structural materials (ceramics, composites, polymers, or metals)\n\nPreferred Skills:\n\n - Experience in fusion, fission, accelerator, or high-radiation environments\n\n - Experience with radiation effects and post-irradiation examination (PIE)\n\n - Familiarity with high-voltage systems or safety-critical experimental environments\n\n\n\n#LI-TM1 #LI-Onsite\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"11798e74-79e3-463d-ac82-94a1049581e1","title":"Process Engineer, Fuel Cycle","department":"Fuel Cycle","team":"Fuel Cycle","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-04-24T00:36:22.025+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/11798e74-79e3-463d-ac82-94a1049581e1","applyUrl":"https://jobs.ashbyhq.com/helion/11798e74-79e3-463d-ac82-94a1049581e1/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You’ll Be Doing:
You will be at the forefront of designing the world’s first continuous fusion fuel cycle – an opportunity to redefine the future of clean energy for the modern world. You will own process design and implementation for major systems in our fuel cycle, taking systems from concept to commissioning. You'll work collaboratively with engineers, scientists, and technicians across the company, with a focus on scaling up and integrating these systems into our commercial fusion platform. You will report to the Fuel Cycle Manager and work onsite at our Everett, WA office.
You Will:
Own inception-to-integration engineering for fuel cycle design units, including system process design, procurement, installation, and commissioning
Perform detailed design for process equipment such as columns, reactors, membranes, heaters, pumps, and piping under varied conditions (ambient, cryogenic, and vacuum)
Use process simulation tools to support design development, integration, and case studies
Produce key deliverables including PFDs, P&IDs, H&MBs, HAZOPs, and sizing calculations
Interact with multidisciplinary teams such as mechanical, electrical, controls, operations to deliver fully integrated process designs
Lead high-level design reviews to validate solutions and incorporate feedback into systems
Required Skills:
Bachelor’s degree in Chemical, Mechanical, or Nuclear Engineering or equivalent experience in chemical process design or development
5+ years of experience delivering full-scope chemical engineering projects, including managing technical deliverables and schedules
Experience taking engineering ideas from abstract concepts to physical reality, demonstrated by delivering first-of-a-kind hardware solutions
Proven ability to apply first-principles thinking and methodical problem-solving as demonstrated by leading design and troubleshooting in complex engineering systems
Experience performing detailed process equipment sizing calculations including chemical, fluid, thermal, mechanical, and relief systems
Demonstrated success working on and contributing to multidisciplinary engineering projects
#LI-Onsite #LI-TM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You’ll Be Doing:\n\nYou will be at the forefront of designing the world’s first continuous fusion fuel cycle – an opportunity to redefine the future of clean energy for the modern world. You will own process design and implementation for major systems in our fuel cycle, taking systems from concept to commissioning. You'll work collaboratively with engineers, scientists, and technicians across the company, with a focus on scaling up and integrating these systems into our commercial fusion platform. You will report to the Fuel Cycle Manager and work onsite at our Everett, WA office.\n\nYou Will:\n\n - Own inception-to-integration engineering for fuel cycle design units, including system process design, procurement, installation, and commissioning\n\n - Perform detailed design for process equipment such as columns, reactors, membranes, heaters, pumps, and piping under varied conditions (ambient, cryogenic, and vacuum)\n\n - Use process simulation tools to support design development, integration, and case studies\n\n - Produce key deliverables including PFDs, P&IDs, H&MBs, HAZOPs, and sizing calculations\n\n - Interact with multidisciplinary teams such as mechanical, electrical, controls, operations to deliver fully integrated process designs\n\n - Lead high-level design reviews to validate solutions and incorporate feedback into systems\n\nRequired Skills:\n\n - Bachelor’s degree in Chemical, Mechanical, or Nuclear Engineering or equivalent experience in chemical process design or development\n\n - 5+ years of experience delivering full-scope chemical engineering projects, including managing technical deliverables and schedules\n\n - Experience taking engineering ideas from abstract concepts to physical reality, demonstrated by delivering first-of-a-kind hardware solutions\n\n - Proven ability to apply first-principles thinking and methodical problem-solving as demonstrated by leading design and troubleshooting in complex engineering systems\n\n - Experience performing detailed process equipment sizing calculations including chemical, fluid, thermal, mechanical, and relief systems\n\n - Demonstrated success working on and contributing to multidisciplinary engineering projects\n\n#LI-Onsite #LI-TM1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"11d1f007-d4d0-44d1-a956-e3bd0bb8c53e","title":"Controls Development Engineer","department":"Supply Chain","team":"Supply Chain","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-15T18:06:18.357+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/11d1f007-d4d0-44d1-a956-e3bd0bb8c53e","applyUrl":"https://jobs.ashbyhq.com/helion/11d1f007-d4d0-44d1-a956-e3bd0bb8c53e/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will develop, implement, and standardize automation and controls used in manufacturing Helion’s fusion generators. By building in-house expertise in our manufacturing processes, you will help accelerate the transition from rapid prototyping to mass production—advancing Helion’s mission to provide clean electricity for the planet. This is an onsite role that reports directly to the Factory Development Manager at our Everett, WA office.
You Will:
Design, scale, and launch manufacturing equipment for new products being produced for the first time, including the development of automation system architecture and standards for deployment across multiple production lines
Produce electrical one-line diagrams and schematics for automated manufacturing equipment; support integration with the factory’s Manufacturing Execution System (MES) and set up equipment reporting to track Overall Equipment Effectiveness (OEE) and other critical machine data
Collaborate with stakeholders to develop and improve both existing and new testing processes; work across technical teams to understand product integration within pulsed power circuits to optimize test processes aligned with Helion’s top-level generator goals
Collaborate with machine suppliers on high-level equipment design and functionality; support design reviews, acceptance testing, and equipment buyoff to ensure seamless integration into manufacturing operations
Implement safety systems that comply with ANSI, ISO, and OSHA standards for high-volume manufacturing equipment to ensure operational safety and regulatory adherence
Troubleshoot down equipment, identify root causes, and implement long-term solutions to prevent recurrence and ensure sustained manufacturing uptime and efficiency
Required Skills:
Bachelor’s degree in engineering with a minimum of 5 years of experience working with manufacturing controls in high-volume manufacturing environments
Proficient in electrical schematic design and PLC programming using ladder logic, function block, or structured text (e.g., Allen-Bradley, Siemens)
Experienced in programming industrial robots, including systems such as Fanuc and Kuka
Skilled in designing safety systems for automated machines, with relevant experience or qualifications in safety compliance and risk mitigation
Ability to apply physics-based first principles to challenge design requirements and underlying assumptions, driving better engineering outcomes
Strong communication skills with proven success influencing cross-functional partners and building effective partnerships with supply chain and production teams
#LI-Onsite #LI-SA1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\nWhat You Will Be Doing:\n\nYou will develop, implement, and standardize automation and controls used in manufacturing Helion’s fusion generators. By building in-house expertise in our manufacturing processes, you will help accelerate the transition from rapid prototyping to mass production—advancing Helion’s mission to provide clean electricity for the planet. This is an onsite role that reports directly to the Factory Development Manager at our Everett, WA office.\n\nYou Will:\n\n - Design, scale, and launch manufacturing equipment for new products being produced for the first time, including the development of automation system architecture and standards for deployment across multiple production lines\n\n - Produce electrical one-line diagrams and schematics for automated manufacturing equipment; support integration with the factory’s Manufacturing Execution System (MES) and set up equipment reporting to track Overall Equipment Effectiveness (OEE) and other critical machine data\n\n - Collaborate with stakeholders to develop and improve both existing and new testing processes; work across technical teams to understand product integration within pulsed power circuits to optimize test processes aligned with Helion’s top-level generator goals\n\n - Collaborate with machine suppliers on high-level equipment design and functionality; support design reviews, acceptance testing, and equipment buyoff to ensure seamless integration into manufacturing operations\n\n - Implement safety systems that comply with ANSI, ISO, and OSHA standards for high-volume manufacturing equipment to ensure operational safety and regulatory adherence\n\n - Troubleshoot down equipment, identify root causes, and implement long-term solutions to prevent recurrence and ensure sustained manufacturing uptime and efficiency\n\nRequired Skills:\n\n - Bachelor’s degree in engineering with a minimum of 5 years of experience working with manufacturing controls in high-volume manufacturing environments\n\n - Proficient in electrical schematic design and PLC programming using ladder logic, function block, or structured text (e.g., Allen-Bradley, Siemens)\n\n - Experienced in programming industrial robots, including systems such as Fanuc and Kuka\n\n - Skilled in designing safety systems for automated machines, with relevant experience or qualifications in safety compliance and risk mitigation\n\n - Ability to apply physics-based first principles to challenge design requirements and underlying assumptions, driving better engineering outcomes\n\n - Strong communication skills with proven success influencing cross-functional partners and building effective partnerships with supply chain and production teams\n\n#LI-Onsite #LI-SA1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"14d31fd7-955b-47ce-bc5d-2d84dcd48836","title":"Manager, Technical Maintenance","department":"Production","team":"Production","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-15T23:23:31.378+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/14d31fd7-955b-47ce-bc5d-2d84dcd48836","applyUrl":"https://jobs.ashbyhq.com/helion/14d31fd7-955b-47ce-bc5d-2d84dcd48836/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing
As a Manager, Technical Maintenance at Helion, you will build and lead the team responsible for keeping critical manufacturing equipment safe, reliable, and production-ready as we scale high-voltage capacitor and integrated module production.
You will set the operating model for maintenance, develop technicians, and establish practical systems for uptime, troubleshooting, spares, and preventive work. This is a hands-on leadership role for someone who can build a strong team while staying close to the equipment, failure modes, and day-to-day execution.
You will work closely with manufacturing, process, controls, and equipment engineering teams to support prototype and production lines, improve equipment performance, and help transition maintenance from reactive response to scalable production reliability. This is an onsite role located at our Everett, WA office.
You Will
Build, lead, and develop a high-performing maintenance team focused on safety, ownership, and reliable execution
Establish maintenance systems for PMs, CMMS, spares, vendor support, budgets, CAPEX planning, work planning, and equipment documentation
Drive uptime, OEE, and equipment reliability through TPM, SPC, root cause analysis, and practical corrective actions
Support hands-on troubleshooting of electromechanical, controls, and automated production equipment when issues escalate
Partner with engineering and manufacturing teams to commission equipment, stabilize processes, and improve production readiness
Create a maintenance culture that raises technical capability, reinforces standards, and scales with production growth
Required Skills
7+ years leading maintenance, equipment, or technical teams in large and complex manufacturing, production, or high-automation environments
Hands-on knowledge of mechanical, electrical, controls, and automated equipment troubleshooting
Experience building technician capability through hiring, coaching, standards, and structured skill development
Experience implementing PMs, CMMS, spares strategies, vendor management, budget controls, CAPEX planning, root cause analysis, TPM, or predictive maintenance practices
Track record improving uptime, OEE, equipment reliability, or production stability
Ability to operate with urgency and rigor in a fast-moving environment moving from prototype builds to higher-volume production
Proven ability to build standards, processes, and team culture in a growing organization
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\nWhat You Will Be Doing\n\nAs a Manager, Technical Maintenance at Helion, you will build and lead the team responsible for keeping critical manufacturing equipment safe, reliable, and production-ready as we scale high-voltage capacitor and integrated module production.\n\nYou will set the operating model for maintenance, develop technicians, and establish practical systems for uptime, troubleshooting, spares, and preventive work. This is a hands-on leadership role for someone who can build a strong team while staying close to the equipment, failure modes, and day-to-day execution.\n\nYou will work closely with manufacturing, process, controls, and equipment engineering teams to support prototype and production lines, improve equipment performance, and help transition maintenance from reactive response to scalable production reliability. This is an onsite role located at our Everett, WA office.\n\nYou Will\n\n - Build, lead, and develop a high-performing maintenance team focused on safety, ownership, and reliable execution\n\n - Establish maintenance systems for PMs, CMMS, spares, vendor support, budgets, CAPEX planning, work planning, and equipment documentation\n\n - Drive uptime, OEE, and equipment reliability through TPM, SPC, root cause analysis, and practical corrective actions\n\n - Support hands-on troubleshooting of electromechanical, controls, and automated production equipment when issues escalate\n\n - Partner with engineering and manufacturing teams to commission equipment, stabilize processes, and improve production readiness\n\n - Create a maintenance culture that raises technical capability, reinforces standards, and scales with production growth\n\nRequired Skills\n\n - 7+ years leading maintenance, equipment, or technical teams in large and complex manufacturing, production, or high-automation environments\n\n - Hands-on knowledge of mechanical, electrical, controls, and automated equipment troubleshooting\n\n - Experience building technician capability through hiring, coaching, standards, and structured skill development\n\n - Experience implementing PMs, CMMS, spares strategies, vendor management, budget controls, CAPEX planning, root cause analysis, TPM, or predictive maintenance practices\n\n - Track record improving uptime, OEE, equipment reliability, or production stability\n\n - Ability to operate with urgency and rigor in a fast-moving environment moving from prototype builds to higher-volume production\n\n - Proven ability to build standards, processes, and team culture in a growing organization\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"18a4093b-9c2f-4590-8df1-88af83d02022","title":"Senior Materials Science Manager","department":"Material Science","team":"Material Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-01T17:53:45.284+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/18a4093b-9c2f-4590-8df1-88af83d02022","applyUrl":"https://jobs.ashbyhq.com/helion/18a4093b-9c2f-4590-8df1-88af83d02022/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will lead Helion’s Materials Interactions and Diagnostics team with a strong focus on developing and deploying critical capabilities that enable the design, testing, and monitoring of materials for extreme environments. You will oversee the delivery of key R&D tools and guide a team of subject matter experts to meet Helion’s materials innovation goals. This onsite position is based in our Everett, WA office and reports to the Director of Materials Science.
You Will:
Set the strategic vision for Materials Interactions and Diagnostics, establishing long-term technical roadmaps spanning characterization, modeling, monitoring, and lifetime prediction in fusion-relevant environments.
Lead, develop, and support subject matter experts driving the development and deployment of new lab infrastructure, driving materials monitoring technologies and developing predictive models and simulations to extend material performance and reliability.
Own end-to-end delivery of infrastructure and platforms, including advanced materials characterization systems, in-situ monitoring technologies, and integrated modeling frameworks.
Build and manage a network of collaborative relationships, both internally and externally, to develop new materials that can survive a fusion environment.
Translate annual goals into objective tasks and manage month-to-month planning towards completing goals and objectives. Drive schedule ownership to accelerate the completion of milestones.
Required Skills:
10+ years of materials-related industry experience and 3+ years of management experience
Master's or PhD in Materials Science, Materials Engineering, Mechanical Engineering, Chemical Engineering or related fields
Proven experience leading R&D organizations delivering complex, high-impact technologies in demanding environments.
Deep expertise in materials characterization, degradation mechanisms, and lifetime prediction, including high temperature, and stress-driven phenomena.
Experience with multiphysics modeling (e.g., Matlab, COMSOL, Python), with the ability to integrate modeling into decision-making frameworks.
Expertise in NDT and in-situ diagnostics, with a track record of advancing monitoring capabilities for critical systems.
Demonstrated success in hiring, mentoring, and developing managers and senior technical talent.
Ability to operate with high autonomy in ambiguous, fast-paced environments, balancing rapid execution with long-term strategic thinking.
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will lead Helion’s Materials Interactions and Diagnostics team with a strong focus on developing and deploying critical capabilities that enable the design, testing, and monitoring of materials for extreme environments. You will oversee the delivery of key R&D tools and guide a team of subject matter experts to meet Helion’s materials innovation goals. This onsite position is based in our Everett, WA office and reports to the Director of Materials Science.\n\nYou Will:\n\n - Set the strategic vision for Materials Interactions and Diagnostics, establishing long-term technical roadmaps spanning characterization, modeling, monitoring, and lifetime prediction in fusion-relevant environments.\n\n - Lead, develop, and support subject matter experts driving the development and deployment of new lab infrastructure, driving materials monitoring technologies and developing predictive models and simulations to extend material performance and reliability.\n\n - Own end-to-end delivery of infrastructure and platforms, including advanced materials characterization systems, in-situ monitoring technologies, and integrated modeling frameworks.\n\n - Build and manage a network of collaborative relationships, both internally and externally, to develop new materials that can survive a fusion environment.\n\n - Translate annual goals into objective tasks and manage month-to-month planning towards completing goals and objectives. Drive schedule ownership to accelerate the completion of milestones.\n\nRequired Skills:\n\n - 10+ years of materials-related industry experience and 3+ years of management experience\n\n - Master's or PhD in Materials Science, Materials Engineering, Mechanical Engineering, Chemical Engineering or related fields\n\n - Proven experience leading R&D organizations delivering complex, high-impact technologies in demanding environments.\n\n - Deep expertise in materials characterization, degradation mechanisms, and lifetime prediction, including high temperature, and stress-driven phenomena.\n\n - Experience with multiphysics modeling (e.g., Matlab, COMSOL, Python), with the ability to integrate modeling into decision-making frameworks.\n\n - Expertise in NDT and in-situ diagnostics, with a track record of advancing monitoring capabilities for critical systems.\n\n - Demonstrated success in hiring, mentoring, and developing managers and senior technical talent.\n\n - Ability to operate with high autonomy in ambiguous, fast-paced environments, balancing rapid execution with long-term strategic thinking.\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"199dc273-3e26-4618-a6e6-75358fb6f493","title":"Health Physicist ","department":"Radiation Safety","team":"Radiation Safety","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-02T15:57:40.385+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/199dc273-3e26-4618-a6e6-75358fb6f493","applyUrl":"https://jobs.ashbyhq.com/helion/199dc273-3e26-4618-a6e6-75358fb6f493/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
We are looking for a Health Physicist to join our Radiation Safety team to work with radiation, radioactive materials, radiation survey equipment, and team members with varying levels of technical familiarity with these subjects, as we operate Polaris and build future fusion generators. This position is ideal for an experienced professional eager to make a significant impact on radiation safety practices at Helion.
As a member of the radiation safety contingent of the Science team, which includes radiation safety, fuel cycle, plasma and nuclear science, and materials contingents, you will work closely with diverse teams across Helion, such as Research & Development, Engineering, Production, EH&S, Facilities, and more. You will report to our RSO at our Everett, WA office.
You Will:
Work with cross-functional teams to design, establish, implement, and execute a comprehensive radiation safety program supporting safe, compliant, and effective radiological operations
Develop and optimize protocols for handling radioactive materials and radiological hazards, including photons, neutrons, tritium, and activated materials
Communicate radiation safety principles and health effects effectively to team members with varying levels of expertise
Operate survey equipment including liquid scintillation counters, NaI detectors, HPGe detectors, Geiger counters, and ion chambers
Perform and improve critical health physics functions, including dosimetry, leak tests, wipe tests, radiation surveys, environmental monitoring, and radiological procedure development
Lead and mentor junior team members and partner teams, driving strategic initiatives and contributing to innovative safety methodologies tailored to fusion technology by ensuring cohesive execution across functions
Required Skills:
Bachelor’s degree in Health Physics, Nuclear Engineering, Radiological Sciences, Physics, or a related technical field is preferred
5+ years of progressive experience in radiation safety, with demonstrated leadership in designing and owning complex radiation safety programs or objectives. Advanced qualifications or certifications such as CHP (Certified Health Physicist) are highly preferred for senior candidates
Ability to communicate complex radiological concepts effectively across multidisciplinary teams
Strong understanding of radiation protection principles, dosimetry, contamination control, and regulatory compliance frameworks
Experience developing, implementing, or improving radiation safety programs, procedures, or operational controls
Hands-on experience working with radioactive materials, radiation detection instrumentation, and radiological survey techniques
Strong understanding of radiation protection principles, dosimetry, contamination control, and regulatory compliance frameworks
#LI-Onsite #LI-TM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nWe are looking for a Health Physicist to join our Radiation Safety team to work with radiation, radioactive materials, radiation survey equipment, and team members with varying levels of technical familiarity with these subjects, as we operate Polaris and build future fusion generators. This position is ideal for an experienced professional eager to make a significant impact on radiation safety practices at Helion.\n\nAs a member of the radiation safety contingent of the Science team, which includes radiation safety, fuel cycle, plasma and nuclear science, and materials contingents, you will work closely with diverse teams across Helion, such as Research & Development, Engineering, Production, EH&S, Facilities, and more. You will report to our RSO at our Everett, WA office.\n\nYou Will:\n\n - Work with cross-functional teams to design, establish, implement, and execute a comprehensive radiation safety program supporting safe, compliant, and effective radiological operations\n\n - Develop and optimize protocols for handling radioactive materials and radiological hazards, including photons, neutrons, tritium, and activated materials\n\n - Communicate radiation safety principles and health effects effectively to team members with varying levels of expertise\n\n - Operate survey equipment including liquid scintillation counters, NaI detectors, HPGe detectors, Geiger counters, and ion chambers\n\n - Perform and improve critical health physics functions, including dosimetry, leak tests, wipe tests, radiation surveys, environmental monitoring, and radiological procedure development\n\n - Lead and mentor junior team members and partner teams, driving strategic initiatives and contributing to innovative safety methodologies tailored to fusion technology by ensuring cohesive execution across functions\n\nRequired Skills:\n\n - Bachelor’s degree in Health Physics, Nuclear Engineering, Radiological Sciences, Physics, or a related technical field is preferred\n\n - 5+ years of progressive experience in radiation safety, with demonstrated leadership in designing and owning complex radiation safety programs or objectives. Advanced qualifications or certifications such as CHP (Certified Health Physicist) are highly preferred for senior candidates\n\n - Ability to communicate complex radiological concepts effectively across multidisciplinary teams\n\n - Strong understanding of radiation protection principles, dosimetry, contamination control, and regulatory compliance frameworks\n\n - Experience developing, implementing, or improving radiation safety programs, procedures, or operational controls\n\n - Hands-on experience working with radioactive materials, radiation detection instrumentation, and radiological survey techniques\n\n - Strong understanding of radiation protection principles, dosimetry, contamination control, and regulatory compliance frameworks\n\n#LI-Onsite #LI-TM1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"1ab0850a-50e2-4853-8fd7-c05e9a36c20f","title":"Principal Experimental Scientist","department":"Science","team":"Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-08-08T18:50:36.113+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/1ab0850a-50e2-4853-8fd7-c05e9a36c20f","applyUrl":"https://jobs.ashbyhq.com/helion/1ab0850a-50e2-4853-8fd7-c05e9a36c20f/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
We are looking for a Principal Experimental Plasma Scientist to lead the plasma diagnostic effort of Helion's fusion generators. This is an onsite role that reports directly to our Director of Plasma and Nuclear Science at our Everett, WA office.
You Will:
Own the end-to-end design and deployment of a comprehensive suite of plasma diagnostics, collaborating closely with physicists, engineers, designers, and data analysts to ensure robust, scalable instrumentation that meets both experimental and operational requirements
Integrate cross-disciplinary technical input from experts across Helion—including plasma physics, machine operations, controls, and data science—to align diagnostic capabilities with real-time operational needs and long-term scientific milestones
Lead the hands-on execution of assembly, installation, calibration, and commissioning processes for diagnostics across multiple campaigns and testbeds. Ensure high data fidelity through rigorous validation and alignment procedures
Develop foundational expertise in pre-ionization plasma diagnostics, establishing best practices and internal methodologies that inform next-generation fusion device development optimized for energy gain and power conversion
Analyze diagnostic data in real time to extract actionable insights about plasma behavior, inform operational tuning, and identify opportunities for performance optimization and system redesign
Partners with leadership across the organization, contributing to strategic planning, roadmap development, and long-term technical vision
Required Skills:
Ph.D. in physics, electrical engineering, aerospace engineering, or a related discipline, with a focus on plasma science, diagnostics, or high-vacuum instrumentation
10+ years of experience working in advanced laboratory environments, with extensive hands-on work involving plasma generation, plasma systems, and UHV vacuum infrastructure
Demonstrated track record using diagnostic measurements (e.g., interferometry, spectroscopy, Langmuir probes, magnetic coils, electrostatic diagnostics) to evaluate plasma parameters such as density, temperature, and current profiles, directly influencing system improvements
Deep expertise and unique domain knowledge in multiple areas of plasma diagnostics and fusion engineering. Recognized as a subject matter expert who operates independently
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nWe are looking for a Principal Experimental Plasma Scientist to lead the plasma diagnostic effort of Helion's fusion generators. This is an onsite role that reports directly to our Director of Plasma and Nuclear Science at our Everett, WA office. \n\nYou Will: \n\n - Own the end-to-end design and deployment of a comprehensive suite of plasma diagnostics, collaborating closely with physicists, engineers, designers, and data analysts to ensure robust, scalable instrumentation that meets both experimental and operational requirements\n\n - Integrate cross-disciplinary technical input from experts across Helion—including plasma physics, machine operations, controls, and data science—to align diagnostic capabilities with real-time operational needs and long-term scientific milestones\n\n - Lead the hands-on execution of assembly, installation, calibration, and commissioning processes for diagnostics across multiple campaigns and testbeds. Ensure high data fidelity through rigorous validation and alignment procedures\n\n - Develop foundational expertise in pre-ionization plasma diagnostics, establishing best practices and internal methodologies that inform next-generation fusion device development optimized for energy gain and power conversion\n\n - Analyze diagnostic data in real time to extract actionable insights about plasma behavior, inform operational tuning, and identify opportunities for performance optimization and system redesign\n\n - Partners with leadership across the organization, contributing to strategic planning, roadmap development, and long-term technical vision\n\nRequired Skills: \n\n - Ph.D. in physics, electrical engineering, aerospace engineering, or a related discipline, with a focus on plasma science, diagnostics, or high-vacuum instrumentation\n\n - 10+ years of experience working in advanced laboratory environments, with extensive hands-on work involving plasma generation, plasma systems, and UHV vacuum infrastructure\n\n - Demonstrated track record using diagnostic measurements (e.g., interferometry, spectroscopy, Langmuir probes, magnetic coils, electrostatic diagnostics) to evaluate plasma parameters such as density, temperature, and current profiles, directly influencing system improvements\n\n - Deep expertise and unique domain knowledge in multiple areas of plasma diagnostics and fusion engineering. Recognized as a subject matter expert who operates independently\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"1e2ff97c-9a78-4f90-99f5-89cfcc9e9eba","title":"Director of Experimental Science","department":"Science","team":"Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-05-17T22:39:45.680+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/1e2ff97c-9a78-4f90-99f5-89cfcc9e9eba","applyUrl":"https://jobs.ashbyhq.com/helion/1e2ff97c-9a78-4f90-99f5-89cfcc9e9eba/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
We are looking for a Director of Experimental Science to lead a team of scientists and engineers in the design, implementation, and testing of devices and technologies aimed at enhancing fusion plasma performance. You will report directly to our Director of Plasma and Nuclear Science.
You Will:
Build, grow, and lead a team of scientists and engineers who will apply their knowledge and expertise in plasma physics to optimize Helion’s fusion devices
Provide clear and concise summaries of experimental campaign results, enabling stakeholders to make informed decisions and adjustments as needed
Work with Helion’s leadership to establish organizational roadmap, goals, and balance risks for the team that align with our strategy and take full ownership of accomplishing these goals
Oversee projects specific to experimental plasma science such as E&M probes; plasma pre-ionization; plasma-material interaction; device design and requirements; full device data collection, analysis and interpretation in coordination with other teams
Drive schedule ownership and optimization by team members to accelerate milestones
Drive experimental plasma and fusion deliverables to completion in collaboration with Mechanical Engineers, Electrical Engineers, R&D, and Production teams.
Required Skills:
Advanced degree in physics, or a related physical science discipline with a minimum of 10 years of scientific research experience and at least 5 years of experience managing a team of scientists or engineers in a research, development, or technology setting
Demonstrated experience building and leading multidisciplinary teams
Experience managing complex inter-departmental projects (including schedule ownership)
Demonstrated experience in applied physics, building and designing hardware
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nWe are looking for a Director of Experimental Science to lead a team of scientists and engineers in the design, implementation, and testing of devices and technologies aimed at enhancing fusion plasma performance. You will report directly to our Director of Plasma and Nuclear Science.\n\nYou Will:\n\n - Build, grow, and lead a team of scientists and engineers who will apply their knowledge and expertise in plasma physics to optimize Helion’s fusion devices\n\n - Provide clear and concise summaries of experimental campaign results, enabling stakeholders to make informed decisions and adjustments as needed\n\n - Work with Helion’s leadership to establish organizational roadmap, goals, and balance risks for the team that align with our strategy and take full ownership of accomplishing these goals\n\n - Oversee projects specific to experimental plasma science such as E&M probes; plasma pre-ionization; plasma-material interaction; device design and requirements; full device data collection, analysis and interpretation in coordination with other teams\n\n - Drive schedule ownership and optimization by team members to accelerate milestones\n\n - Drive experimental plasma and fusion deliverables to completion in collaboration with Mechanical Engineers, Electrical Engineers, R&D, and Production teams.\n\nRequired Skills:\n\n - Advanced degree in physics, or a related physical science discipline with a minimum of 10 years of scientific research experience and at least 5 years of experience managing a team of scientists or engineers in a research, development, or technology setting\n\n - Demonstrated experience building and leading multidisciplinary teams\n\n - Experience managing complex inter-departmental projects (including schedule ownership)\n\n - Demonstrated experience in applied physics, building and designing hardware\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"1e4cac3b-5e40-4baa-81b9-d9030c6198e3","title":"Electrical Systems Engineer","department":"Electrical Engineering","team":"Electrical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-03-17T18:43:08.534+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/1e4cac3b-5e40-4baa-81b9-d9030c6198e3","applyUrl":"https://jobs.ashbyhq.com/helion/1e4cac3b-5e40-4baa-81b9-d9030c6198e3/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
As an Electrical Systems Engineer, you will help define the electrical hardware that powers and controls our next-generation fusion machines. You will work at the architecture level to ensure electrical subsystems, including power distribution, controls interfaces, sensors, and communication networks, function together as a coherent and reliable platform. In this role, you will contribute to architectural decisions, define requirements and interfaces, and support verification and hardware bring-up. You will work closely with engineering, test, and commissioning teams to translate technical objectives into implementable designs and ensure those designs perform as intended during testing and deployment. This role blends architecture development, requirements ownership, and hands-on hardware work, and is well suited for engineers who enjoy working across disciplines while remaining closely connected to the physical system.
You Will:
Contribute to the architecture and design of electrical subsystems, ensuring alignment with overall machine requirements and operational goals.
Define, maintain, and manage system and subsystem requirements, ensuring clear traceability from top-level objectives to implemented hardware.
Develop and maintain Interface Control Documents (ICDs) that define electrical, controls, and mechanical interfaces between subsystems and suppliers.
Support verification planning and execution, ensuring requirements have clear verification methods and participating in testing activities.
Work hands-on during hardware bring-up and prototyping, helping diagnose and resolve issues across electrical hardware, controls systems, and subsystem interfaces.
Collaborate closely with electrical, controls, mechanical, and test teams to ensure designs function correctly within the overall machine.
Support integration of new hardware and subsystems during development and commissioning.
Contribute to system documentation and engineering processes, including requirements management, design reviews, and integration planning.
Required Skills:
Bachelor’s or Master’s degree in Electrical Engineering or a related field.
3+ years of experience in electrical systems engineering, integration, test, or hardware development.
Experience contributing to system or subsystem architecture, including defining electrical subsystems and their interactions.
Experience developing and managing technical requirements and Interface Control Documents (ICDs).
Ability to read and interpret electrical schematics, wiring diagrams, and interconnect documentation.
Hands-on experience with hardware bring-up, troubleshooting, and root cause analysis using standard lab instrumentation such as oscilloscopes, DMMs, and logic or spectrum analyzers.
Experience working with cross-disciplinary engineering teams including electrical, controls, mechanical, and test.
Strong technical documentation and communication skills, including the ability to clearly capture requirements, interfaces, and design decisions.
Experience working with hardware suppliers or external partners to define technical requirements and review deliverables.
Desired Skills:
Experience in aerospace, automotive, robotics, energy systems, or other safety-critical, high-reliability industries.
Familiarity with large-scale electrical hardware systems, including power distribution, sensing, and controls integration.
Knowledge of high-voltage or high-current electrical systems, including grounding, protection, and EMI/EMC considerations.
Experience with requirements management and PLM tools such as Flow, Jama, DOORS, Teamcenter, or Confluence.
Exposure to system safety and reliability methods, including FMEA, FMECA, or fault analysis.
Experience supporting or executing system-level integration testing, including instrumentation, automation, and data analysis.
Familiarity with electrical interconnect systems and harness manufacturing standards such as IPC/WHMA-A-620 or related industry practices.
Comfort operating in fast-paced development environments where both engineering rigor and development speed are required.
Demonstrated ownership of hardware development efforts from concept through deployment, including coordination with suppliers and cross-disciplinary teams.
#LI-Onsite
#LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\nAs an Electrical Systems Engineer, you will help define the electrical hardware that powers and controls our next-generation fusion machines. You will work at the architecture level to ensure electrical subsystems, including power distribution, controls interfaces, sensors, and communication networks, function together as a coherent and reliable platform. In this role, you will contribute to architectural decisions, define requirements and interfaces, and support verification and hardware bring-up. You will work closely with engineering, test, and commissioning teams to translate technical objectives into implementable designs and ensure those designs perform as intended during testing and deployment. This role blends architecture development, requirements ownership, and hands-on hardware work, and is well suited for engineers who enjoy working across disciplines while remaining closely connected to the physical system.\n\nYou Will:\n\n - Contribute to the architecture and design of electrical subsystems, ensuring alignment with overall machine requirements and operational goals.\n\n - Define, maintain, and manage system and subsystem requirements, ensuring clear traceability from top-level objectives to implemented hardware.\n\n - Develop and maintain Interface Control Documents (ICDs) that define electrical, controls, and mechanical interfaces between subsystems and suppliers.\n\n - Support verification planning and execution, ensuring requirements have clear verification methods and participating in testing activities.\n\n - Work hands-on during hardware bring-up and prototyping, helping diagnose and resolve issues across electrical hardware, controls systems, and subsystem interfaces.\n\n - Collaborate closely with electrical, controls, mechanical, and test teams to ensure designs function correctly within the overall machine.\n\n - Support integration of new hardware and subsystems during development and commissioning.\n\n - Contribute to system documentation and engineering processes, including requirements management, design reviews, and integration planning.\n\nRequired Skills:\n\n - Bachelor’s or Master’s degree in Electrical Engineering or a related field.\n\n - 3+ years of experience in electrical systems engineering, integration, test, or hardware development.\n\n - Experience contributing to system or subsystem architecture, including defining electrical subsystems and their interactions.\n\n - Experience developing and managing technical requirements and Interface Control Documents (ICDs).\n\n - Ability to read and interpret electrical schematics, wiring diagrams, and interconnect documentation.\n\n - Hands-on experience with hardware bring-up, troubleshooting, and root cause analysis using standard lab instrumentation such as oscilloscopes, DMMs, and logic or spectrum analyzers.\n\n - Experience working with cross-disciplinary engineering teams including electrical, controls, mechanical, and test.\n\n - Strong technical documentation and communication skills, including the ability to clearly capture requirements, interfaces, and design decisions.\n\n - Experience working with hardware suppliers or external partners to define technical requirements and review deliverables.\n\n\n\nDesired Skills:\n\n - Experience in aerospace, automotive, robotics, energy systems, or other safety-critical, high-reliability industries.\n\n - Familiarity with large-scale electrical hardware systems, including power distribution, sensing, and controls integration.\n\n - Knowledge of high-voltage or high-current electrical systems, including grounding, protection, and EMI/EMC considerations.\n\n - Experience with requirements management and PLM tools such as Flow, Jama, DOORS, Teamcenter, or Confluence.\n\n - Exposure to system safety and reliability methods, including FMEA, FMECA, or fault analysis.\n\n - Experience supporting or executing system-level integration testing, including instrumentation, automation, and data analysis.\n\n - Familiarity with electrical interconnect systems and harness manufacturing standards such as IPC/WHMA-A-620 or related industry practices.\n\n - Comfort operating in fast-paced development environments where both engineering rigor and development speed are required.\n\n - Demonstrated ownership of hardware development efforts from concept through deployment, including coordination with suppliers and cross-disciplinary teams.\n\n#LI-Onsite\n\n#LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"2001baa2-4e12-42ea-9285-8ee242280654","title":"Special Projects Engineer","department":"Special Projects","team":"Special Projects","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-05-20T23:16:15.355+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/2001baa2-4e12-42ea-9285-8ee242280654","applyUrl":"https://jobs.ashbyhq.com/helion/2001baa2-4e12-42ea-9285-8ee242280654/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
As a Special Projects Engineer, you will drive the delivery of high-impact projects across Helion’s facilities, infrastructure, and operations. These projects are often ambiguous at the outset, technically complex, and time sensitive. You will serve as the lead on these projects—translating engineering requirements into executable plans, liaising between design and execution teams, and ensuring technical accuracy, schedule alignment, and high-quality outcomes throughout the project lifecycle. This is an onsite role that reports directly to the Chief of Staff at our Everett, WA headquarters.
You Will:
Translate ambiguous or evolving requirements into structured project plans and executable steps
Own and execute facility and operational projects end-to-end—from technical planning through on-site implementation
Leverage engineering expertise to solve novel technical and operational challenges, ensuring solutions are practical, scalable, and aligned with company goals
Manage competing priorities effectively to consistently meet deadlines and milestones
Collaborate with internal engineering, operations, and safety teams to maintain clear communication and alignment throughout the project lifecycle
Proactively identify and resolve technical and execution issues to maintain project momentum
Required Skills:
Bachelor’s degree in engineering preferred, or direct experience with engineering (Mechanical, Electrical, Civil, Industrial, or related field)
3+ years of hands-on experience solving engineering or technical challenges, ideally spanning multiple domains (facilities, operations, R&D, or systems)
Proven ability to manage multiple projects in high-growth environments, with strong technical problem-solving and hands-on build experience
Experience coordinating with vendors, contractors, and internal stakeholders
Exceptional written and verbal communication skills, especially presenting in translating technical issues and coordinating across teams
Strong sense of ownership and bias toward action — you move fast while preserving quality and rigor
#LI-Onsite #LI-MM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nAs a Special Projects Engineer, you will drive the delivery of high-impact projects across Helion’s facilities, infrastructure, and operations. These projects are often ambiguous at the outset, technically complex, and time sensitive. You will serve as the lead on these projects—translating engineering requirements into executable plans, liaising between design and execution teams, and ensuring technical accuracy, schedule alignment, and high-quality outcomes throughout the project lifecycle. This is an onsite role that reports directly to the Chief of Staff at our Everett, WA headquarters.\n\nYou Will:\n\n - Translate ambiguous or evolving requirements into structured project plans and executable steps\n\n - Own and execute facility and operational projects end-to-end—from technical planning through on-site implementation\n\n - Leverage engineering expertise to solve novel technical and operational challenges, ensuring solutions are practical, scalable, and aligned with company goals\n\n - Manage competing priorities effectively to consistently meet deadlines and milestones\n\n - Collaborate with internal engineering, operations, and safety teams to maintain clear communication and alignment throughout the project lifecycle\n\n - Proactively identify and resolve technical and execution issues to maintain project momentum\n\nRequired Skills:\n\n - Bachelor’s degree in engineering preferred, or direct experience with engineering (Mechanical, Electrical, Civil, Industrial, or related field)\n\n - 3+ years of hands-on experience solving engineering or technical challenges, ideally spanning multiple domains (facilities, operations, R&D, or systems)\n\n - Proven ability to manage multiple projects in high-growth environments, with strong technical problem-solving and hands-on build experience\n\n - Experience coordinating with vendors, contractors, and internal stakeholders\n\n - Exceptional written and verbal communication skills, especially presenting in translating technical issues and coordinating across teams\n\n - Strong sense of ownership and bias toward action — you move fast while preserving quality and rigor\n\n#LI-Onsite #LI-MM1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"22d1b06a-57c3-40cd-a14b-ab1c261dd42c","title":"Principal Electrical Engineer - RF ","department":"Science","team":"Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-03-02T18:36:34.957+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/22d1b06a-57c3-40cd-a14b-ab1c261dd42c","applyUrl":"https://jobs.ashbyhq.com/helion/22d1b06a-57c3-40cd-a14b-ab1c261dd42c/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
As a Principal Electrical Engineer at Helion, you will be at the forefront of designing, implementing, and operating advanced RF circuits and diagnostic systems for Helion’s fusion generators. You will integrate plasma science with high-power electrical engineering to deliver reliable, scalable, and high-fidelity plasma and energy system measurements that directly inform performance optimization, generator commissioning, and future device development. You will work across physics, controls, machine operations, and engineering disciplines to ensure instrumentation, diagnostics, and electrical subsystems meet stringent experimental and operational requirements. This is an onsite role that reports directly to our Director of Plasma and Nuclear Science at our Everett, WA office.
You Will:
Lead the end-to-end design, deployment, calibration, and operation of RF and plasma systems, ensuring robust instrumentation that meets experimental and operational performance needs.
Design, test, and troubleshoot high-voltage electrical systems including power delivery to pulsed magnets, energy recovery circuits, and internal power networks used during pulsed generator operation.
Develop and integrate electrical measurement hardware (e.g., probes, magnetic coils, high-speed digitizers, sensor networks) into diagnostic platforms that capture key plasma and power system behaviors.
Collaborate with plasma physicists, electrical engineers, controls engineers, and data scientists to align diagnostic capabilities with live experimental needs and long-term scientific and engineering milestones.
Own the assembly, installation, and commissioning of diagnostic and electrical subsystems across multiple test campaigns, ensuring high data fidelity and compliance with safety and operational standards.
Analyze real-time and post-shot electrical and diagnostic data to extract actionable insights, driving performance improvement and design iteration for both hardware and diagnostics.
Guide the development of high-throughput experimental workflows, instrumentation architecture, and internal methodologies that scale with generator performance and facility growth.
Provide technical leadership in strategic planning and cross-functional roadmap discussions that shape the future of Helion’s fusion experimentation and electrical systems architecture.
Mentor junior scientists and engineers, driving excellent engineering practices, documentation standards, and experimental rigor.
Required Skills:
Advanced degree (Ph.D. preferred) in Electrical Engineering, Physics, Plasma Science, or a closely related discipline with significant hands-on experimental experience.
10+ years of advanced laboratory and experimental engineering experience, including design and deployment of RF systems and high-voltage measurement hardware in plasma, fusion, or comparable environments.
Deep experience in high-voltage electrical systems, including design, test, troubleshooting, and commissioning of pulsed systems and power electronics.
Demonstrated subject matter expertise with the ability to operate independently, lead cross-disciplinary technical efforts, and provide technical mentorship.
Strong collaboration, communication, and leadership capability to drive work with engineers, scientists, and technical teams.
#LI-Onsite #LI-TG1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\nWhat You Will Be Doing: \n\nAs a Principal Electrical Engineer at Helion, you will be at the forefront of designing, implementing, and operating advanced RF circuits and diagnostic systems for Helion’s fusion generators. You will integrate plasma science with high-power electrical engineering to deliver reliable, scalable, and high-fidelity plasma and energy system measurements that directly inform performance optimization, generator commissioning, and future device development. You will work across physics, controls, machine operations, and engineering disciplines to ensure instrumentation, diagnostics, and electrical subsystems meet stringent experimental and operational requirements. This is an onsite role that reports directly to our Director of Plasma and Nuclear Science at our Everett, WA office. \n\nYou Will: \n\n - Lead the end-to-end design, deployment, calibration, and operation of RF and plasma systems, ensuring robust instrumentation that meets experimental and operational performance needs. \n\n - Design, test, and troubleshoot high-voltage electrical systems including power delivery to pulsed magnets, energy recovery circuits, and internal power networks used during pulsed generator operation. \n\n - Develop and integrate electrical measurement hardware (e.g., probes, magnetic coils, high-speed digitizers, sensor networks) into diagnostic platforms that capture key plasma and power system behaviors. \n\n - Collaborate with plasma physicists, electrical engineers, controls engineers, and data scientists to align diagnostic capabilities with live experimental needs and long-term scientific and engineering milestones. \n\n - Own the assembly, installation, and commissioning of diagnostic and electrical subsystems across multiple test campaigns, ensuring high data fidelity and compliance with safety and operational standards. \n\n - Analyze real-time and post-shot electrical and diagnostic data to extract actionable insights, driving performance improvement and design iteration for both hardware and diagnostics. \n\n - Guide the development of high-throughput experimental workflows, instrumentation architecture, and internal methodologies that scale with generator performance and facility growth. \n\n - Provide technical leadership in strategic planning and cross-functional roadmap discussions that shape the future of Helion’s fusion experimentation and electrical systems architecture. \n\n - Mentor junior scientists and engineers, driving excellent engineering practices, documentation standards, and experimental rigor. \n\nRequired Skills: \n\n - Advanced degree (Ph.D. preferred) in Electrical Engineering, Physics, Plasma Science, or a closely related discipline with significant hands-on experimental experience. \n\n - 10+ years of advanced laboratory and experimental engineering experience, including design and deployment of RF systems and high-voltage measurement hardware in plasma, fusion, or comparable environments. \n\n - Deep experience in high-voltage electrical systems, including design, test, troubleshooting, and commissioning of pulsed systems and power electronics. \n\n - Demonstrated subject matter expertise with the ability to operate independently, lead cross-disciplinary technical efforts, and provide technical mentorship. \n\n - Strong collaboration, communication, and leadership capability to drive work with engineers, scientists, and technical teams. \n\n#LI-Onsite #LI-TG1\n\n\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"237a3a65-81e5-4122-82da-bc03a2699c86","title":"Senior Software Engineer, Cybersecurity","department":"Software Engineering","team":"Software Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-02-26T02:22:50.730+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/237a3a65-81e5-4122-82da-bc03a2699c86","applyUrl":"https://jobs.ashbyhq.com/helion/237a3a65-81e5-4122-82da-bc03a2699c86/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
As a Cybersecurity Software Engineer focused on product security, you will ensure that the firmware, software, and server infrastructure driving our fusion machines are resilient against attack. You’ll work closely with firmware, software, and infrastructure engineers to embed security into every stage of the development lifecycle—reviewing designs, auditing code and dependencies, and integrating security checks into CI/CD pipelines. You’ll lead initiatives in encryption, secrets management, and secure authentication to protect sensitive machine operations. Beyond building defenses, you’ll champion security best practices across the organization, providing both the tools and the guidance to enable engineers to move quickly without sacrificing safety. This role is ideal for someone who wants to blend deep cybersecurity expertise with hands-on engineering to safeguard one of the most advanced energy technologies being built today. This is an onsite role that reports directly to the Lead Electrical Engineer at our Everett, WA office.
You Will:
Review firmware, software, and infrastructure designs to identify and mitigate security risks before implementation
Advocate for and implement security best practices across engineering, such as encryption, key rotation, and secure authentication
Deploy and manage application security tools (e.g., Snyk, Trivy, Docker image scanners) to audit dependencies, supply chain risks, and vulnerabilities
Own the definition and enforcement of product-level secrets management and credential handling
Lead initiatives in software and firmware hardening for production systems, ensuring resilience against potential adversarial attacks
Work with firmware, software, and infrastructure engineers to embed security into CI/CD pipelines and development workflows
Create and maintain internal guidelines for secure coding practices and data classification
Contribute to building institutional trust by ensuring our software and firmware meet high standards of security, reliability, and compliance
Serve as the voice of product security in design reviews, code reviews, and cross-functional engineering efforts
Required Skills:
Strong Linux systems knowledge, including security hardening and permissions management
Proficiency with Git-based workflows and secure software delivery practices
Solid understanding of modern encryption standards (TLS, AES, RSA, ECC) and key management practices
Hands-on experience with security engineering tools (SAST/DAST, dependency scanning, Docker/Kubernetes security, supply chain auditing)
Experience conducting secure code reviews and identifying common vulnerabilities
Strong programming background in at least two of: C++, Rust, Python, Typescript, or Java
Familiarity with vulnerability assessment and mitigation strategies across firmware, software, and server environments
Ability to work collaboratively with multi-disciplinary engineering teams and advocate for security without blocking progress
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nAs a Cybersecurity Software Engineer focused on product security, you will ensure that the firmware, software, and server infrastructure driving our fusion machines are resilient against attack. You’ll work closely with firmware, software, and infrastructure engineers to embed security into every stage of the development lifecycle—reviewing designs, auditing code and dependencies, and integrating security checks into CI/CD pipelines. You’ll lead initiatives in encryption, secrets management, and secure authentication to protect sensitive machine operations. Beyond building defenses, you’ll champion security best practices across the organization, providing both the tools and the guidance to enable engineers to move quickly without sacrificing safety. This role is ideal for someone who wants to blend deep cybersecurity expertise with hands-on engineering to safeguard one of the most advanced energy technologies being built today. This is an onsite role that reports directly to the Lead Electrical Engineer at our Everett, WA office.\n\nYou Will:\n\n - Review firmware, software, and infrastructure designs to identify and mitigate security risks before implementation\n\n - Advocate for and implement security best practices across engineering, such as encryption, key rotation, and secure authentication\n\n - Deploy and manage application security tools (e.g., Snyk, Trivy, Docker image scanners) to audit dependencies, supply chain risks, and vulnerabilities\n\n - Own the definition and enforcement of product-level secrets management and credential handling\n\n - Lead initiatives in software and firmware hardening for production systems, ensuring resilience against potential adversarial attacks\n\n - Work with firmware, software, and infrastructure engineers to embed security into CI/CD pipelines and development workflows\n\n - Create and maintain internal guidelines for secure coding practices and data classification\n\n - Contribute to building institutional trust by ensuring our software and firmware meet high standards of security, reliability, and compliance\n\n - Serve as the voice of product security in design reviews, code reviews, and cross-functional engineering efforts\n\nRequired Skills:\n\n - Strong Linux systems knowledge, including security hardening and permissions management\n\n - Proficiency with Git-based workflows and secure software delivery practices\n\n - Solid understanding of modern encryption standards (TLS, AES, RSA, ECC) and key management practices\n\n - Hands-on experience with security engineering tools (SAST/DAST, dependency scanning, Docker/Kubernetes security, supply chain auditing)\n\n - Experience conducting secure code reviews and identifying common vulnerabilities\n\n - Strong programming background in at least two of: C++, Rust, Python, Typescript, or Java\n\n - Familiarity with vulnerability assessment and mitigation strategies across firmware, software, and server environments\n\n - Ability to work collaboratively with multi-disciplinary engineering teams and advocate for security without blocking progress\n\n#LI-Onsite #LI-KL1\n\n \n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"24e6b2d6-d935-43dd-845c-f46847f24a37","title":"Principal Capacitor Engineer","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-12-19T19:04:10.607+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/24e6b2d6-d935-43dd-845c-f46847f24a37","applyUrl":"https://jobs.ashbyhq.com/helion/24e6b2d6-d935-43dd-845c-f46847f24a37/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing
As a Principal Capacitor Design Engineer at Helion, you will lead the design, development, and scaling of custom high-voltage, pulsed-power capacitors that are core to Helion’s fusion generators. You will own capacitor architecture from first principles through high-volume manufacturing, driving breakthroughs in energy density, reliability, and cost. You will provide deep technical leadership to engineering, manufacturing, and production teams as Helion transitions from prototype builds to the world’s first fusion power plant. You will provide technical leadership, organize work, set priorities, and advance Helion’s mission to deliver clean power in a reliable and cost-effective manner. This is an onsite role that reports directly to Senior Manager of Mechanical Engineering at our Everett, WA, office.
You Will
Lead the full lifecycle of capacitor development—requirements definition, physics-based modeling, internal design, materials selection, prototyping, testing, and scaling into high-throughput manufacturing
Drive the development of low-inductance, high-reliability pulsed capacitors capable of <1 ms, multi-megampere operation, while optimizing for energy density, manufacturability, cost, and lifetime performance
Define critical material specifications, qualification criteria, manufacturing processes, and high-voltage pulsed-power test methods for Helion’s custom capacitor systems
Provide technical leadership and mentorship to engineers, technicians, and assemblers, guiding architecture decisions, test interpretation, and iterative design improvements
Lead failure analysis, lifetime modeling, thermal analysis, and root-cause investigations to strengthen capacitor reliability and production consistency
Partner closely with pulsed-power electrical engineers to align capacitor design with system-level circuit performance targets
Direct the testing, characterization, and evaluation of internally built and supplier-provided capacitors; analyze data and drive continuous improvement with internal teams and external vendors
Own long-term capacitor technology strategy, identifying opportunities to reduce risk, introduce advanced materials, and integrate emerging capacitor technologies
Required Skills
Bachelor’s or Master’s degree in Engineering or Physics
15+ years of deep experience in pulsed-power capacitor design and manufacturing, including internal construction, low-inductance layout, simulation, materials processing, fabrication, high-voltage testing, and lifetime prediction
Demonstrated expertise in dielectric physics: electrical/thermal aging, breakdown behavior, complex permittivity, frequency and temperature dependence, and high-field effects
Proven ability to lead capacitor design from concept through high-volume production, including scaling throughput and establishing robust manufacturing processes
Hands-on experience with rapid prototyping, iterative testing, and high-energy pulsed-power qualification
Strong capability in failure analysis, thermal modeling, and performance evaluation under extreme electrical and thermal stress
Track record of effective cross-functional collaboration with electrical engineering, manufacturing, supply chain, and production teams
Ability to drive technical decision-making, mentor engineers, and set long-term architecture and process standards
Strong communication skills and ability to translate complex physical and engineering concepts into actionable design directions
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing\n\nAs a Principal Capacitor Design Engineer at Helion, you will lead the design, development, and scaling of custom high-voltage, pulsed-power capacitors that are core to Helion’s fusion generators. You will own capacitor architecture from first principles through high-volume manufacturing, driving breakthroughs in energy density, reliability, and cost. You will provide deep technical leadership to engineering, manufacturing, and production teams as Helion transitions from prototype builds to the world’s first fusion power plant. You will provide technical leadership, organize work, set priorities, and advance Helion’s mission to deliver clean power in a reliable and cost-effective manner. This is an onsite role that reports directly to Senior Manager of Mechanical Engineering at our Everett, WA, office.\n\nYou Will\n\n - Lead the full lifecycle of capacitor development—requirements definition, physics-based modeling, internal design, materials selection, prototyping, testing, and scaling into high-throughput manufacturing\n\n - Drive the development of low-inductance, high-reliability pulsed capacitors capable of <1 ms, multi-megampere operation, while optimizing for energy density, manufacturability, cost, and lifetime performance\n\n - Define critical material specifications, qualification criteria, manufacturing processes, and high-voltage pulsed-power test methods for Helion’s custom capacitor systems\n\n - Provide technical leadership and mentorship to engineers, technicians, and assemblers, guiding architecture decisions, test interpretation, and iterative design improvements\n\n - Lead failure analysis, lifetime modeling, thermal analysis, and root-cause investigations to strengthen capacitor reliability and production consistency\n\n - Partner closely with pulsed-power electrical engineers to align capacitor design with system-level circuit performance targets\n\n - Direct the testing, characterization, and evaluation of internally built and supplier-provided capacitors; analyze data and drive continuous improvement with internal teams and external vendors\n\n - Own long-term capacitor technology strategy, identifying opportunities to reduce risk, introduce advanced materials, and integrate emerging capacitor technologies\n\nRequired Skills\n\n - Bachelor’s or Master’s degree in Engineering or Physics\n\n - 15+ years of deep experience in pulsed-power capacitor design and manufacturing, including internal construction, low-inductance layout, simulation, materials processing, fabrication, high-voltage testing, and lifetime prediction\n\n - Demonstrated expertise in dielectric physics: electrical/thermal aging, breakdown behavior, complex permittivity, frequency and temperature dependence, and high-field effects\n\n - Proven ability to lead capacitor design from concept through high-volume production, including scaling throughput and establishing robust manufacturing processes\n\n - Hands-on experience with rapid prototyping, iterative testing, and high-energy pulsed-power qualification\n\n - Strong capability in failure analysis, thermal modeling, and performance evaluation under extreme electrical and thermal stress\n\n - Track record of effective cross-functional collaboration with electrical engineering, manufacturing, supply chain, and production teams\n\n - Ability to drive technical decision-making, mentor engineers, and set long-term architecture and process standards\n\n - Strong communication skills and ability to translate complex physical and engineering concepts into actionable design directions\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"263c3ab3-3d9f-4c72-a2f8-fa0fe52c2eb4","title":"Manufacturing Engineer","department":"Supply Chain","team":"Supply Chain","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-15T17:48:51.522+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/263c3ab3-3d9f-4c72-a2f8-fa0fe52c2eb4","applyUrl":"https://jobs.ashbyhq.com/helion/263c3ab3-3d9f-4c72-a2f8-fa0fe52c2eb4/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will design, implement, and optimize the production process for in-house capacitors. This is a unique opportunity to collaborate with other teams (Supply Chain, Production, Engineering, Test Operations), directly influence the commissioning timeline for Helion's first power plant, and lay the groundwork for Helion's transition to generator mass-manufacturing. This is an onsite role that reports to the Director of Capacitor Manufacturing at our Everett, WA office.
You Will:
Design and implement rate-based assembly processes with support from Production and Engineering
Manage interdisciplinary projects to increase rate and throughput of capacitor line (e.g., floor layout, tooling, build cells, large-scale equipment)
Help develop new business processes such as non-conformance management, process control, process safety, and asset maintenance to grow production line and build the foundation for high-volume production
Gather data (labor hours, cycle times, fallout) to identify production bottlenecks, and propose and deploy solutions (design changes, process changes, equipment, automation)
Identify high return-on-investment capabilities, including capital equipment and software capabilities that improve manufacturing processes, partnering with Production, Finance, Operations, and Facilities teams
Collaborate on development of future processes in parallel with supporting and enabling higher output on current production line
Required Skills:
5+ years of technical work experience that includes development and improvement of production systems
Hands-on engineering or manufacturing experience in rate-based and high-volume manufacturing
Experience communicating with and influencing partners across organizational lines
Experience in cradle-to-grave ownership of complex engineering or production scopes
#LI-Onsite #LI-SA1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\nWhat You Will Be Doing:\n\nYou will design, implement, and optimize the production process for in-house capacitors. This is a unique opportunity to collaborate with other teams (Supply Chain, Production, Engineering, Test Operations), directly influence the commissioning timeline for Helion's first power plant, and lay the groundwork for Helion's transition to generator mass-manufacturing. This is an onsite role that reports to the Director of Capacitor Manufacturing at our Everett, WA office.\n\nYou Will:\n\n - Design and implement rate-based assembly processes with support from Production and Engineering\n\n - Manage interdisciplinary projects to increase rate and throughput of capacitor line (e.g., floor layout, tooling, build cells, large-scale equipment)\n\n - Help develop new business processes such as non-conformance management, process control, process safety, and asset maintenance to grow production line and build the foundation for high-volume production\n\n - Gather data (labor hours, cycle times, fallout) to identify production bottlenecks, and propose and deploy solutions (design changes, process changes, equipment, automation)\n\n - Identify high return-on-investment capabilities, including capital equipment and software capabilities that improve manufacturing processes, partnering with Production, Finance, Operations, and Facilities teams\n\n - Collaborate on development of future processes in parallel with supporting and enabling higher output on current production line\n\nRequired Skills:\n\n - 5+ years of technical work experience that includes development and improvement of production systems\n\n - Hands-on engineering or manufacturing experience in rate-based and high-volume manufacturing\n\n - Experience communicating with and influencing partners across organizational lines\n\n - Experience in cradle-to-grave ownership of complex engineering or production scopes\n\n#LI-Onsite #LI-SA1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"27648fb4-e835-47db-b697-06b994b1ca91","title":"HERCULES Proposal Submission Form ","department":"All Departments","team":"All Departments","employmentType":"Temporary","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-10-17T22:51:20.948+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/27648fb4-e835-47db-b697-06b994b1ca91","applyUrl":"https://jobs.ashbyhq.com/helion/27648fb4-e835-47db-b697-06b994b1ca91/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
Helion’s external funding initiative supports research that develops the materials and technologies required to scale fusion energy from initial power plants to global deployment. With over $17M in funding committed through 2028, HERCULES will support partner-driven projects across three phases:
Phase 1: $10,000 - $100,000 over 6-8 months
Phase 2: $100,000 - $500,000 over 12-24 months
Phase 3: $1,000,000 - $2,000,000 to establish a University Center of Excellence
Research topics in materials science, nuclear engineering, fuel cycle, plasma physics, and pulsed power are listed on the website. Proposals are reviewed year-round, with priority given to those received by January 5, 2026.
How it works
Complete the below application questions and submit your proposal in PDF format
Proposals must be in PDF format and limited to four pages
What to include (Maximum four pages)
Your team’s capabilities and expertise
Statement of work
List of personnel and institutions involved
Deliverables and funding breakdown
Overall project schedule
This is your chance to collaborate with Helion on the mission to deliver fusion energy.
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\nHERCULES PROPOSAL SUBMISSION FORM\n\nHelion’s external funding initiative supports research that develops the materials and technologies required to scale fusion energy from initial power plants to global deployment. With over $17M in funding committed through 2028, HERCULES will support partner-driven projects across three phases:\n\n - Phase 1: $10,000 - $100,000 over 6-8 months\n\n - Phase 2: $100,000 - $500,000 over 12-24 months\n\n - Phase 3: $1,000,000 - $2,000,000 to establish a University Center of Excellence \n\nResearch topics in materials science, nuclear engineering, fuel cycle, plasma physics, and pulsed power are listed on the website. Proposals are reviewed year-round, with priority given to those received by January 5, 2026. \n\nHow it works\n\n - Complete the below application questions and submit your proposal in PDF format\n\n - Proposals must be in PDF format and limited to four pages\n\nWhat to include (Maximum four pages)\n\n - Your team’s capabilities and expertise\n\n - Statement of work\n\n - List of personnel and institutions involved\n\n - Deliverables and funding breakdown\n\n - Overall project schedule\n\nThis is your chance to collaborate with Helion on the mission to deliver fusion energy. \n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"2c79c829-73cd-4558-9934-ea5f848a040a","title":"Senior Software Engineer, Data Platform","department":"Software Engineering","team":"Software Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-12-19T19:45:39.490+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/2c79c829-73cd-4558-9934-ea5f848a040a","applyUrl":"https://jobs.ashbyhq.com/helion/2c79c829-73cd-4558-9934-ea5f848a040a/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What you will be doing
You will design, develop, and operate a secure, scalable, reliable, and efficient platform to facilitate the flow of data between internal and external systems supporting mechanical and electrical engineering, supply chain, inventory, manufacturing, and finance. This is a high-impact, high-visibility role: together with a cross-functional team owning business critical applications, you will multiply the impact of many other teams across the company.
You will:
Design and develop large-scale, batch and real-time data pipelines, ELT processes, data warehouses, and data lakes, both on prem and in the cloud
Scale our data platform to support operational growth from millions of parts per year to millions per day
Monitor and continuously improve the performance and reliability of data connections and their impact on up-and-downstream systems, using best-in-class observability tools
Ensure data quality and governance by managing metadata like schemas, lineage, and access control
Collaborate with other software engineers, data analysts and scientists, other engineering disciplines, non-engineers, leadership, and vendors to understand data requirements and deliver solutions
Stay current with emerging data technologies while recommending battle-tested right-fit solutions that align with strategic goals
Participate in on-call rotations to maintain our SLA with the rest of the company, and prevent data issues from stalling 24/7 production schedules
Required Skills:
Bachelor’s degree in computer science or a related field
8+ years of software and/or data engineering experience building and operating large-scale, distributed data systems
Hands-on experience with modern data storage and processing technologies (e.g., Kafka, Postgres, blob storage, Flink, dbt, Iceberg)
Expertise in Python and SQL; experience with other languages like Java, Scala, or Go
Cloud-native experience in Azure, AWS, and/or Google Cloud, using container orchestration technologies like Docker, Kubernetes, and infrastructure-as-code tools like Terraform
Familiar with DevOps best practices, using version control (Git), CI/CD (e.g., Buildkite, GitHub Actions), and monitoring and alerting (e.g., Prometheus, Grafana, Datadog)
Experience with AI/ML, including LLMs and MCP servers
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat you will be doing\n\nYou will design, develop, and operate a secure, scalable, reliable, and efficient platform to facilitate the flow of data between internal and external systems supporting mechanical and electrical engineering, supply chain, inventory, manufacturing, and finance. This is a high-impact, high-visibility role: together with a cross-functional team owning business critical applications, you will multiply the impact of many other teams across the company. \n\nYou will:\n\n - Design and develop large-scale, batch and real-time data pipelines, ELT processes, data warehouses, and data lakes, both on prem and in the cloud\n\n - Scale our data platform to support operational growth from millions of parts per year to millions per day\n\n - Monitor and continuously improve the performance and reliability of data connections and their impact on up-and-downstream systems, using best-in-class observability tools\n\n - Ensure data quality and governance by managing metadata like schemas, lineage, and access control\n\n - Collaborate with other software engineers, data analysts and scientists, other engineering disciplines, non-engineers, leadership, and vendors to understand data requirements and deliver solutions\n\n - Stay current with emerging data technologies while recommending battle-tested right-fit solutions that align with strategic goals\n\n - Participate in on-call rotations to maintain our SLA with the rest of the company, and prevent data issues from stalling 24/7 production schedules\n\nRequired Skills:\n\n - Bachelor’s degree in computer science or a related field\n\n - 8+ years of software and/or data engineering experience building and operating large-scale, distributed data systems\n\n - Hands-on experience with modern data storage and processing technologies (e.g., Kafka, Postgres, blob storage, Flink, dbt, Iceberg)\n\n - Expertise in Python and SQL; experience with other languages like Java, Scala, or Go\n\n - Cloud-native experience in Azure, AWS, and/or Google Cloud, using container orchestration technologies like Docker, Kubernetes, and infrastructure-as-code tools like Terraform\n\n - Familiar with DevOps best practices, using version control (Git), CI/CD (e.g., Buildkite, GitHub Actions), and monitoring and alerting (e.g., Prometheus, Grafana, Datadog)\n\n - Experience with AI/ML, including LLMs and MCP servers\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"2ca6129b-9a44-4ea1-8550-109eefb42b90","title":"Instructional System Designer","department":"Research & Development ","team":"Research & Development ","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-05-18T18:47:20.792+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/2ca6129b-9a44-4ea1-8550-109eefb42b90","applyUrl":"https://jobs.ashbyhq.com/helion/2ca6129b-9a44-4ea1-8550-109eefb42b90/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will lead the growth and execution of learning experiences within the Research and Development team to support Helion's continued operations and scaling of fusion machines. You'll develop training programs and contribute to cultivating a strong learning culture amongst operators and technicians. This is an onsite role that reports directly to the Research and Development Manager at our Everett, WA office.
You Will:
Design, develop, and implement blended learning programs that support compliance, qualification, and role-specific training for fusion machine operations, maintenance, and other safety-critical testing environments
Lead multiple concurrent learning design projects from discovery through deployment, balancing quality, stakeholder needs, and the pace of a fast-moving R&D environment
Partner with R&D Engineering teams to ensure personnel readiness to safely operate, maintain, and troubleshoot fusion machines through effective technical training and certification programs
Conduct learning needs analyses with subject matter experts across technical disciplines, translating complex concepts into measurable learning objectives and scalable training solutions
Manage and scale learning content within Helion's Learning Management System (LMS), including information architecture, content governance, and the creation of SCORM/xAPI-compliant learning experiences using Articulate 360 or similar tools
Measure learning effectiveness using Kirkpatrick or comparable evaluation frameworks, leveraging learner performance and operational data to continuously improve training outcomes and workforce capability
Maintain a centralized, version-controlled technical learning library that ensures training content remains accurate, accessible, and aligned with evolving operational requirements
Required Skills:
5+ years of experience designing, developing, and delivering learning programs in high-growth technology, manufacturing, or startup environments, with expertise in instructional design, needs analysis, curriculum development, assessment design, and learning evaluation
Demonstrated success managing complex learning initiatives and collaborating across functions, quickly building subject matter expertise and transform it into effective, learner-centered experiences
Proficiency with Learning Management Systems (LMS) and modern digital learning technologies, including Articulate Storyline, Rise, and AI-powered learning tools, with experience leveraging technology to scale learning programs and improve learner outcomes
Deep expertise in developing technical, safety-critical, compliance, and role-based training programs, particularly in high-voltage, manufacturing, or similarly regulated environments, serving diverse audiences across functions and disciplines
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will lead the growth and execution of learning experiences within the Research and Development team to support Helion's continued operations and scaling of fusion machines. You'll develop training programs and contribute to cultivating a strong learning culture amongst operators and technicians. This is an onsite role that reports directly to the Research and Development Manager at our Everett, WA office.\n\nYou Will:\n\n - Design, develop, and implement blended learning programs that support compliance, qualification, and role-specific training for fusion machine operations, maintenance, and other safety-critical testing environments\n\n - Lead multiple concurrent learning design projects from discovery through deployment, balancing quality, stakeholder needs, and the pace of a fast-moving R&D environment\n\n - Partner with R&D Engineering teams to ensure personnel readiness to safely operate, maintain, and troubleshoot fusion machines through effective technical training and certification programs\n\n - Conduct learning needs analyses with subject matter experts across technical disciplines, translating complex concepts into measurable learning objectives and scalable training solutions\n\n - Manage and scale learning content within Helion's Learning Management System (LMS), including information architecture, content governance, and the creation of SCORM/xAPI-compliant learning experiences using Articulate 360 or similar tools\n\n - Measure learning effectiveness using Kirkpatrick or comparable evaluation frameworks, leveraging learner performance and operational data to continuously improve training outcomes and workforce capability\n\n - Maintain a centralized, version-controlled technical learning library that ensures training content remains accurate, accessible, and aligned with evolving operational requirements\n\nRequired Skills:\n\n - 5+ years of experience designing, developing, and delivering learning programs in high-growth technology, manufacturing, or startup environments, with expertise in instructional design, needs analysis, curriculum development, assessment design, and learning evaluation\n\n - Demonstrated success managing complex learning initiatives and collaborating across functions, quickly building subject matter expertise and transform it into effective, learner-centered experiences\n\n - Proficiency with Learning Management Systems (LMS) and modern digital learning technologies, including Articulate Storyline, Rise, and AI-powered learning tools, with experience leveraging technology to scale learning programs and improve learner outcomes\n\n - Deep expertise in developing technical, safety-critical, compliance, and role-based training programs, particularly in high-voltage, manufacturing, or similarly regulated environments, serving diverse audiences across functions and disciplines\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"348e3002-542c-4083-93e4-af19f7086b1f","title":"Skillbridge","department":"Research & Development ","team":"Research & Development ","employmentType":"Contract","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-03-20T20:35:34.421+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/348e3002-542c-4083-93e4-af19f7086b1f","applyUrl":"https://jobs.ashbyhq.com/helion/348e3002-542c-4083-93e4-af19f7086b1f/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You’ll work side-by-side with technicians, engineers and scientists to turn ideas into prototypes, prototypes into experiments, and experiments into real systems operating on Polaris and the next generation of Helion fusion machines.
This is a hands-on technical role for people who are interested in solving hard problems and working in a fast-paced environment where each day will bring new challenges and opportunities to build, test, and advance the next generation of fusion energy systems.
You Will:
Gain experience supporting the operation, maintenance, and ongoing development of Polaris and future generations of Helion fusion systems through shadowing and guided participation
Gain exposure to the full life cycle of complex systems—including fabrication, assembly, testing, troubleshooting, deployment, operation, maintenance, and repair—by assisting and learning alongside experienced team members
Learn how to install, align, and maintain high voltage pulsed power systems, including ultra-high vacuum (UHV) and fuel systems, through observation and supervised hands-on experience
Gain experience fabricating one-of-a-kind prototypes, assemblies, fixtures, and instrumentation enclosures while supporting rapid design iterations from engineering concepts
Observe and assist with upgrades, modifications, and reconfiguration of experimental test bays to support evolving research and development work
Required Skills:
Eligible and approved for the DOW Skillbridge program
Strong willingness to learn, take direction, and actively engage in a hands-on environment
Ability to follow safety procedures and work carefully around high-voltage and experimental systems. Experience with tag-out preferred.
Electrical, mechanical, nuclear, or related technical military background
Effective communication skills and ability to work collaboratively on a team
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou’ll work side-by-side with technicians, engineers and scientists to turn ideas into prototypes, prototypes into experiments, and experiments into real systems operating on Polaris and the next generation of Helion fusion machines.\n\nThis is a hands-on technical role for people who are interested in solving hard problems and working in a fast-paced environment where each day will bring new challenges and opportunities to build, test, and advance the next generation of fusion energy systems.\n\n\n\nYou Will:\n\n - Gain experience supporting the operation, maintenance, and ongoing development of Polaris and future generations of Helion fusion systems through shadowing and guided participation\n\n - Gain exposure to the full life cycle of complex systems—including fabrication, assembly, testing, troubleshooting, deployment, operation, maintenance, and repair—by assisting and learning alongside experienced team members\n\n - Learn how to install, align, and maintain high voltage pulsed power systems, including ultra-high vacuum (UHV) and fuel systems, through observation and supervised hands-on experience\n\n - Gain experience fabricating one-of-a-kind prototypes, assemblies, fixtures, and instrumentation enclosures while supporting rapid design iterations from engineering concepts\n\n - Observe and assist with upgrades, modifications, and reconfiguration of experimental test bays to support evolving research and development work\n\nRequired Skills:\n\n - Eligible and approved for the DOW Skillbridge https://skillbridge.osd.mil/faq.htmprogram\n\n - Strong willingness to learn, take direction, and actively engage in a hands-on environment\n\n - Ability to follow safety procedures and work carefully around high-voltage and experimental systems. Experience with tag-out preferred.\n\n - Electrical, mechanical, nuclear, or related technical military background\n\n - Effective communication skills and ability to work collaboratively on a team\n\n\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"3a958165-7937-4eb1-b0b3-9d8dab3c0d1d","title":"Senior Test Engineer","department":"Production","team":"Production","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-12-19T21:38:14.935+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/3a958165-7937-4eb1-b0b3-9d8dab3c0d1d","applyUrl":"https://jobs.ashbyhq.com/helion/3a958165-7937-4eb1-b0b3-9d8dab3c0d1d/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
As a Test Engineer at Helion, you will be responsible for designing, building, and sustaining the electrical test systems that validate PCBAs, power electronics, and high-voltage assemblies used across our fusion generators. You will operate at the intersection of design engineering and production, ensuring that test infrastructure is robust, repeatable, and safe for hand-on execution by technicians.
Your work will directly enable faster hardware iteration, improved first-pass yield, and reliable delivery of mission-critical electrical systems that support Helion's fusion generators and pulsed-power architecture. This is a hands-on, lab-based role reporting to the Production Manager and working closely with Design Engineers, R&D Engineers, and Technicians/Supervisors. This is onsite role located at our Everett, WA office.
You Will:
Design and deliver electrical test systems for PCBA and high-voltage assemblies, including test rack architecture, fixture design, instrumentation selection, electrical integration, and supporting automation
Design test fixture PCBAs used within test racks and fixturing, owning schematic capture, layout, review, and bring-up to enable functional validation and diagnostics of production hardware
Build, wire, debug, and maintain complete test racks and fixtures, including power distribution, safety interlocks, signal routing, and data acquisition integration
Develop and maintain data acquisition and control tools using Python or PLC-based systems to support sequencing, measurement, and reporting
Write and maintain test procedures, calibration standards, and test limits in collaboration with design engineering and production leadership
Analyze test data to generate FPY, yield, and performance metrics, and partner with design teams to refine thresholds and improve robustness
Work hands-on with technicians and supervisors to standardize safe, repeatable test execution and continuously improve test system scalability and maintainability
Support deployment and sustainment of test infrastructure at Contract Manufacturers, including validation of test hardware and associated electronics
Required Skills:
Bachelor’s degree in electrical engineering, Mechatronics, or a related field
5+ years of experience developing and supporting electrical or electronic test systems in R&D or production environments
Demonstrated experience designing PCBAs for test fixtures or test systems, including schematic capture, layout, review, and bring-up
Proficiency with ECAD tools such as Altium Designer or equivalent
Strong hands-on experience designing, building, wiring, and debugging test racks, fixtures, harnesses, and control systems
Working experience with Python or PLC-based systems for test sequencing, automation, and data acquisition
Proficiency using standard lab instrumentation including oscilloscopes, DMMs, power supplies, electronic loads, and spectrum analyzers
Strong understanding of electrical safety principles and lab best practices
Strong analytical skills with experience interpreting FPY, yield, or performance metrics
Proven ability to collaborate across design engineering, production, and technician teams and communicate clearly at multiple levels
#LI-Onsite
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nAs a Test Engineer at Helion, you will be responsible for designing, building, and sustaining the electrical test systems that validate PCBAs, power electronics, and high-voltage assemblies used across our fusion generators. You will operate at the intersection of design engineering and production, ensuring that test infrastructure is robust, repeatable, and safe for hand-on execution by technicians.\n\nYour work will directly enable faster hardware iteration, improved first-pass yield, and reliable delivery of mission-critical electrical systems that support Helion's fusion generators and pulsed-power architecture. This is a hands-on, lab-based role reporting to the Production Manager and working closely with Design Engineers, R&D Engineers, and Technicians/Supervisors. This is onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Design and deliver electrical test systems for PCBA and high-voltage assemblies, including test rack architecture, fixture design, instrumentation selection, electrical integration, and supporting automation\n\n - Design test fixture PCBAs used within test racks and fixturing, owning schematic capture, layout, review, and bring-up to enable functional validation and diagnostics of production hardware\n\n - Build, wire, debug, and maintain complete test racks and fixtures, including power distribution, safety interlocks, signal routing, and data acquisition integration\n\n - Develop and maintain data acquisition and control tools using Python or PLC-based systems to support sequencing, measurement, and reporting\n\n - Write and maintain test procedures, calibration standards, and test limits in collaboration with design engineering and production leadership\n\n - Analyze test data to generate FPY, yield, and performance metrics, and partner with design teams to refine thresholds and improve robustness\n\n - Work hands-on with technicians and supervisors to standardize safe, repeatable test execution and continuously improve test system scalability and maintainability\n\n - Support deployment and sustainment of test infrastructure at Contract Manufacturers, including validation of test hardware and associated electronics\n\nRequired Skills:\n\n - Bachelor’s degree in electrical engineering, Mechatronics, or a related field\n\n - 5+ years of experience developing and supporting electrical or electronic test systems in R&D or production environments\n\n - Demonstrated experience designing PCBAs for test fixtures or test systems, including schematic capture, layout, review, and bring-up\n\n - Proficiency with ECAD tools such as Altium Designer or equivalent\n\n - Strong hands-on experience designing, building, wiring, and debugging test racks, fixtures, harnesses, and control systems\n\n - Working experience with Python or PLC-based systems for test sequencing, automation, and data acquisition\n\n - Proficiency using standard lab instrumentation including oscilloscopes, DMMs, power supplies, electronic loads, and spectrum analyzers\n\n - Strong understanding of electrical safety principles and lab best practices\n\n - Strong analytical skills with experience interpreting FPY, yield, or performance metrics\n\n - Proven ability to collaborate across design engineering, production, and technician teams and communicate clearly at multiple levels\n\n#LI-Onsite\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"3da328e8-4b64-49bc-80e6-72f90cdb336a","title":"Mechanical Designer","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-18T18:59:45.841+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/3da328e8-4b64-49bc-80e6-72f90cdb336a","applyUrl":"https://jobs.ashbyhq.com/helion/3da328e8-4b64-49bc-80e6-72f90cdb336a/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
As a Mechanical Designer, you will join our engineering team and design solutions for the future of Energy. Your designs will change the world, span everything from structures to electrical integration by creating models and drawings using NX. You will be integral to guiding the future of design standards at Helion. This is onsite position reporting directly to the Director of Mechanical Engineering at our Everett, WA office.
You Will:
Design high-quality 3D models using CAD software with NX.
Create detailed technical drawings and specifications for production
Collaborate with engineers to ensure design and production feasibility
Manage upper-level assemblies for our next-generation fusion machines
Conduct design reviews and provide feedback to improve design and production
Required Skills:
Bachelor's degree in Mechanical Engineering or equivalent experience, with 5+ years of experience in CAD software and assembly management
Advanced proficiency in CAD software, such as NX, or SolidWorks with an ability to create complex models and drawings
Experience with PLM (Product Lifecycle Management) software systems, and experience managing high-level bills of material through multiple phases of the development cycle
Familiarity with GD&T (geometric dimensioning and tolerancing) standards, with an ability to apply these standards to complex designs
Experience with product design in the energy, aerospace, or manufacturing industries
Understanding of Mechanical and Structural fundamentals with an ability to use tolerance stack-ups to validate designs
Knowledge of manufacturing processes and materials, with a focus on optimizing for design for manufacturability (DFM)
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\nAs a Mechanical Designer, you will join our engineering team and design solutions for the future of Energy. Your designs will change the world, span everything from structures to electrical integration by creating models and drawings using NX. You will be integral to guiding the future of design standards at Helion. This is onsite position reporting directly to the Director of Mechanical Engineering at our Everett, WA office.\n\n\nYou Will:\n\n - Design high-quality 3D models using CAD software with NX.\n\n - Create detailed technical drawings and specifications for production\n\n - Collaborate with engineers to ensure design and production feasibility\n\n - Manage upper-level assemblies for our next-generation fusion machines\n\n - Conduct design reviews and provide feedback to improve design and production\n\n\nRequired Skills:\n\n - Bachelor's degree in Mechanical Engineering or equivalent experience, with 5+ years of experience in CAD software and assembly management\n\n - Advanced proficiency in CAD software, such as NX, or SolidWorks with an ability to create complex models and drawings\n\n - Experience with PLM (Product Lifecycle Management) software systems, and experience managing high-level bills of material through multiple phases of the development cycle\n\n - Familiarity with GD&T (geometric dimensioning and tolerancing) standards, with an ability to apply these standards to complex designs\n\n - Experience with product design in the energy, aerospace, or manufacturing industries\n\n - Understanding of Mechanical and Structural fundamentals with an ability to use tolerance stack-ups to validate designs\n\n - Knowledge of manufacturing processes and materials, with a focus on optimizing for design for manufacturability (DFM)\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"3e9903d0-45d1-4ab6-81c9-864f2318b772","title":"Senior Software Engineer, Full Stack","department":"Software Engineering","team":"Software Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-12-19T19:47:11.344+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/3e9903d0-45d1-4ab6-81c9-864f2318b772","applyUrl":"https://jobs.ashbyhq.com/helion/3e9903d0-45d1-4ab6-81c9-864f2318b772/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What you will be doing
You will design, develop, and operate secure, reliable, scalable, and delightfully usable full-stack applications to optimize processes between mechanical and electrical engineering, supply chain, inventory, manufacturing, and finance, integrating with our internal data platform and external systems. This is a high-impact, high-visibility role: together with a cross-functional team owning business critical applications, you will multiply the impact of many other teams across the company.
You will:
Design and develop frontends, APIs, workflows, database schemas, and caching layers
Be a part-time product manager and UX designer. You need to understand how people and processes interact with the software you build
Monitor and continuously improve the performance and reliability of our systems, using best-in-class observability tools
Collaborate with other software engineers, data analysts and scientists, other engineering disciplines, non-engineers, leadership, and vendors to understand feature and data requirements and deliver solutions
Stay current with emerging technologies while recommending battle-tested right-fit solutions that align with strategic goals
Participate in on-call rotations to maintain our SLA with the rest of the company, and prevent issues from stalling 24/7 production schedules
Required Skills:
Bachelor’s degree in computer science or a related field
8+ years of software engineering experience building full-stack applications
Hands-on experience with modern web stacks (e.g., React, Next.js)
Expertise in HTML, CSS, TypeScript and a backend language like Go or Python
Cloud-native experience in Azure, AWS, and/or Google Cloud, using container orchestration technologies like Docker, Kubernetes, and infrastructure-as-code tools like Terraform
Familiar with DevOps best practices, using version control (Git), CI/CD (e.g., Buildkite, GitHub Actions), and monitoring and alerting (e.g., Prometheus, Grafana, Datadog)
Familiar with UX design tools like Figma
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat you will be doing\n\nYou will design, develop, and operate secure, reliable, scalable, and delightfully usable full-stack applications to optimize processes between mechanical and electrical engineering, supply chain, inventory, manufacturing, and finance, integrating with our internal data platform and external systems. This is a high-impact, high-visibility role: together with a cross-functional team owning business critical applications, you will multiply the impact of many other teams across the company. \n\nYou will:\n\n - Design and develop frontends, APIs, workflows, database schemas, and caching layers\n\n - Be a part-time product manager and UX designer. You need to understand how people and processes interact with the software you build\n\n - Monitor and continuously improve the performance and reliability of our systems, using best-in-class observability tools\n\n - Collaborate with other software engineers, data analysts and scientists, other engineering disciplines, non-engineers, leadership, and vendors to understand feature and data requirements and deliver solutions\n\n - Stay current with emerging technologies while recommending battle-tested right-fit solutions that align with strategic goals\n\n - Participate in on-call rotations to maintain our SLA with the rest of the company, and prevent issues from stalling 24/7 production schedules\n\nRequired Skills:\n\n - Bachelor’s degree in computer science or a related field\n\n - 8+ years of software engineering experience building full-stack applications\n\n - Hands-on experience with modern web stacks (e.g., React, Next.js)\n\n - Expertise in HTML, CSS, TypeScript and a backend language like Go or Python\n\n - Cloud-native experience in Azure, AWS, and/or Google Cloud, using container orchestration technologies like Docker, Kubernetes, and infrastructure-as-code tools like Terraform\n\n - Familiar with DevOps best practices, using version control (Git), CI/CD (e.g., Buildkite, GitHub Actions), and monitoring and alerting (e.g., Prometheus, Grafana, Datadog)\n\n - Familiar with UX design tools like Figma\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"411c557c-d386-4cb2-9ecf-1ba94bf30501","title":"Construction Project Engineer","department":"Facilities","team":"Facilities","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-04-10T21:22:16.198+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/411c557c-d386-4cb2-9ecf-1ba94bf30501","applyUrl":"https://jobs.ashbyhq.com/helion/411c557c-d386-4cb2-9ecf-1ba94bf30501/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
As an Entry Level Construction Project Engineer at Helion, you will support the delivery of complex, fast-paced construction projects that enable the future of fusion energy. Working across diverse trades and project types, you will help turn ambitious designs into reality. You’ll play a hands-on role in ensuring projects are executed safely, efficiently, and to the highest quality standards. This is an onsite role at our Everett, WA office, reporting to the Facilities Build Team Leader.
You Will:
Take ownership of supporting planning and delivery of construction activities across Helion’s campus, using creative and resourceful problem solving to drive work forward with a strong bias for action in a fast-moving environment
Manage core project processes including stakeholder requests, change orders, material orders, and documentation— driving tasks through to completion with a high level of accountability and attention to detail
Prepare quantity take-offs, support estimating, and assist with subcontractor/trade partner pricing and scope management while adapting to evolving project needs and priorities
Coordinate across internal teams, subcontractors, and suppliers to solve problems quickly, navigate ambiguity, and keep projects moving despite incomplete information
Maintain accurate and up-to-date records including meeting minutes, progress photos, logs, and closeout documentation, taking full ownership of project information and deliverables
Operate effectively in a dynamic environment with shifting priorities, while upholding Helion’s safety culture and ensuring quality and design requirements are met in the field
Required Skills:
2+ years of experience supporting construction processes across multiple trades and project types
Strong organizational and time management skills with attention to detail
Ability to read and interpret construction drawings and technical documents
Proficiency in Microsoft Office; familiarity with tools like Procore, Bluebeam, or MS Project is a plus
Ability to work in a fast-paced, hands-on environment and adapt to changing project needs
Willingness and ability to perform physical tasks and work in a variety of environmental conditions
#LI-Onsite #LI-MM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nAs an Entry Level Construction Project Engineer at Helion, you will support the delivery of complex, fast-paced construction projects that enable the future of fusion energy. Working across diverse trades and project types, you will help turn ambitious designs into reality. You’ll play a hands-on role in ensuring projects are executed safely, efficiently, and to the highest quality standards. This is an onsite role at our Everett, WA office, reporting to the Facilities Build Team Leader.\n\nYou Will:\n\n - Take ownership of supporting planning and delivery of construction activities across Helion’s campus, using creative and resourceful problem solving to drive work forward with a strong bias for action in a fast-moving environment\n\n - Manage core project processes including stakeholder requests, change orders, material orders, and documentation— driving tasks through to completion with a high level of accountability and attention to detail\n\n - Prepare quantity take-offs, support estimating, and assist with subcontractor/trade partner pricing and scope management while adapting to evolving project needs and priorities\n\n - Coordinate across internal teams, subcontractors, and suppliers to solve problems quickly, navigate ambiguity, and keep projects moving despite incomplete information\n\n - Maintain accurate and up-to-date records including meeting minutes, progress photos, logs, and closeout documentation, taking full ownership of project information and deliverables\n\n - Operate effectively in a dynamic environment with shifting priorities, while upholding Helion’s safety culture and ensuring quality and design requirements are met in the field\n\nRequired Skills:\n\n - 2+ years of experience supporting construction processes across multiple trades and project types\n\n - Strong organizational and time management skills with attention to detail\n\n - Ability to read and interpret construction drawings and technical documents\n\n - Proficiency in Microsoft Office; familiarity with tools like Procore, Bluebeam, or MS Project is a plus\n\n - Ability to work in a fast-paced, hands-on environment and adapt to changing project needs\n\n - Willingness and ability to perform physical tasks and work in a variety of environmental conditions\n\n#LI-Onsite #LI-MM1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"423a9d67-00c6-46ab-9fe1-a1b469a9a049","title":"Senior Semiconductor Device Engineer","department":"Electrical Engineering","team":"Electrical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-12-19T23:51:20.691+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/423a9d67-00c6-46ab-9fe1-a1b469a9a049","applyUrl":"https://jobs.ashbyhq.com/helion/423a9d67-00c6-46ab-9fe1-a1b469a9a049/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will drive the design and development of cutting-edge semiconductors for high-performance pulsed power systems used in Helion’s fusion generators. You will work in a fast-paced environment to develop, test, and implement high-reliability, high-efficiency switching components, with a strong emphasis on rapid development cycles. You will report directly to our Senior Manager of Electrical Engineering, and this is an onsite role located at our Everett, WA office.
You Will:
Spearhead efforts to gather and utilize requirements for switching components and apply them toward design of physical products
Drive the design and development of novel pulsed power electronics components and systems, focusing on high-efficiency, high-reliability semiconductor solutions
Collaborate with cross-functional teams to ensure integration of electrical, mechanical, and physics-based principles in semiconductor development
Lead development cycles, including hands-on prototyping, small-scale testing, and large-scale performance validation
Conduct simulations, testing, and analysis to validate designs and iterate quickly using data-backed decision making
Stay informed on emerging semiconductor materials, device architectures, and industry trends
Document design processes, specifications, test results, and findings for continuous improvement and knowledge sharing
Required Skills:
Bachelor’s, Master’s, or higher degree in Electrical Engineering, Physics, or a related field
8+ years of experience in power electronics and high voltage semiconductor design
Strong foundation in semiconductor physics, power electronics, and circuit design principles
Proven experience with rapid prototyping and development cycles in a high-tech environment
Background working with semiconductor fabricators to manufacture semiconductor devices
Proficiency with simulation tools and test equipment for power electronics
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will drive the design and development of cutting-edge semiconductors for high-performance pulsed power systems used in Helion’s fusion generators. You will work in a fast-paced environment to develop, test, and implement high-reliability, high-efficiency switching components, with a strong emphasis on rapid development cycles. You will report directly to our Senior Manager of Electrical Engineering, and this is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Spearhead efforts to gather and utilize requirements for switching components and apply them toward design of physical products \n\n - Drive the design and development of novel pulsed power electronics components and systems, focusing on high-efficiency, high-reliability semiconductor solutions\n\n - Collaborate with cross-functional teams to ensure integration of electrical, mechanical, and physics-based principles in semiconductor development\n\n - Lead development cycles, including hands-on prototyping, small-scale testing, and large-scale performance validation\n\n - Conduct simulations, testing, and analysis to validate designs and iterate quickly using data-backed decision making\n\n - Stay informed on emerging semiconductor materials, device architectures, and industry trends\n\n - Document design processes, specifications, test results, and findings for continuous improvement and knowledge sharing\n\nRequired Skills:\n\n - Bachelor’s, Master’s, or higher degree in Electrical Engineering, Physics, or a related field\n\n - 8+ years of experience in power electronics and high voltage semiconductor design\n\n - Strong foundation in semiconductor physics, power electronics, and circuit design principles\n\n - Proven experience with rapid prototyping and development cycles in a high-tech environment\n\n - Background working with semiconductor fabricators to manufacture semiconductor devices \n\n - Proficiency with simulation tools and test equipment for power electronics\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"424e1bb6-efd4-4306-b659-ff4fea3eb7f2","title":"R&D Manager - LabVIEW Controls Systems","department":"Research & Development ","team":"Research & Development ","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-01-14T22:24:46.816+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/424e1bb6-efd4-4306-b659-ff4fea3eb7f2","applyUrl":"https://jobs.ashbyhq.com/helion/424e1bb6-efd4-4306-b659-ff4fea3eb7f2/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will manage the control systems team in the R&D department. This team is responsible for delivering and maintaining control and data acquisition systems. These systems are used to control HV electrical test bays, control plasma technology development machines, control Production Manufacturing end-of-line testing, and control FRC plasma machines of varying sizes.
This team will be one of the primary contributors to the control system of our first power plant, Orion, and managing the development collaboration with the Engineering department will be a primary focus. You will report to the R&D Manager, onsite located at our Everett, WA office.
You Will:
Effectively lead controls engineers in the timely and successful delivery of a variety of control and data acquisition systems used across the organization
Develop and maintain effective, and productive cross-team collaborations, specifically those related to the buildout of the Orion machine
Proactively identify and mitigate future technical, and personnel blockers
Foster individual contributor career growth through effective leadership
Recruit and grow the team as needed to succeed in its mission
Effectively advocate for the team to other managers and up the leadership chain
Work with the team to develop, define, implement, and maintain code development and documentation practices that support future growth
Required Skills:
Minimum 2+ years managing controls engineers in a scaling environment
Experience developing control systems for large-scale, complex systems
Demonstrated technical proficiency with LabVIEW and NI hardware in control system applications, including PXI, cRIO, RT, and FPGA
Experience incorporating PLCs into LabVIEW and NI based control systems
Experience incorporating text-based code (e.g. C, Matlab) into LabVIEW and NI based control systems
#LI-Onsite #LI-TM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will manage the control systems team in the R&D department. This team is responsible for delivering and maintaining control and data acquisition systems. These systems are used to control HV electrical test bays, control plasma technology development machines, control Production Manufacturing end-of-line testing, and control FRC plasma machines of varying sizes.\n\nThis team will be one of the primary contributors to the control system of our first power plant, Orion, and managing the development collaboration with the Engineering department will be a primary focus. You will report to the R&D Manager, onsite located at our Everett, WA office.\n\nYou Will:\n\n - Effectively lead controls engineers in the timely and successful delivery of a variety of control and data acquisition systems used across the organization\n\n - Develop and maintain effective, and productive cross-team collaborations, specifically those related to the buildout of the Orion machine\n\n - Proactively identify and mitigate future technical, and personnel blockers\n\n - Foster individual contributor career growth through effective leadership\n\n - Recruit and grow the team as needed to succeed in its mission\n\n - Effectively advocate for the team to other managers and up the leadership chain\n\n - Work with the team to develop, define, implement, and maintain code development and documentation practices that support future growth\n\nRequired Skills:\n\n - Minimum 2+ years managing controls engineers in a scaling environment\n\n - Experience developing control systems for large-scale, complex systems\n\n - Demonstrated technical proficiency with LabVIEW and NI hardware in control system applications, including PXI, cRIO, RT, and FPGA\n\n - Experience incorporating PLCs into LabVIEW and NI based control systems\n\n - Experience incorporating text-based code (e.g. C, Matlab) into LabVIEW and NI based control systems\n\n \n\n#LI-Onsite #LI-TM1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"4388852c-2dd6-410f-a5c5-7ba64c7b23c5","title":"Senior Materials Engineer, Dielectrics","department":"Material Science","team":"Material Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-22T16:37:25.399+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/4388852c-2dd6-410f-a5c5-7ba64c7b23c5","applyUrl":"https://jobs.ashbyhq.com/helion/4388852c-2dd6-410f-a5c5-7ba64c7b23c5/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will play a key role in developing dielectric materials suited for high voltage components that maximize efficiency in the extreme environment of a nuclear fusion reactor. Specific responsibilities will include the development and evaluation of novel materials or the assessment and vetting of a wide range of emerging materials with a focus on their extended performance under radiation exposure. In this onsite role, based at our Everett, WA office, you will report to the Director of Materials Science and collaborate closely with cross-functional teams to advance Helion’s mission.
You Will:
Lead high impact and multi-disciplinary projects to develop new high-voltage dielectric insulating materials that can perform under applied high-voltage conditions in an advanced fusion generator
Lead testing campaigns to quantify the electrical properties and behavioral response limits of materials exposed to demanding conditions of heat, stress, and accumulated radiation damage
Perform comprehensive reviews of published research and development efforts in advanced high-voltage dielectric materials and distill the information into summaries for non-nuclear engineers
Operate in an environment with obstacles and changing requirements, balancing risks with rapid delivery requirements
Partner with other internal Helion teams, external vendors, national laboratories, and universities to establish pathways to extended capabilities
Develop a broad collaborative network and represent Helion at technical meetings and conferences
Required Skills:
An advanced degree and/or extensive understanding of electrically insulating and dielectric materials, typically demonstrated by a degree in materials science, electrical engineering, physics, nuclear engineering, or related disciplines and 8+ years of hands-on work
8+ years of industry-related experience, including proven results executing R&D and development projects (including design reviews) for a commercial product
Capability to plan and lead R&D efforts guided by a milestone schedule
The ideal candidate would have a bias for action, know how to execute with urgency and favor learning through rapid prototyping
Preferred Skills:
Experience with radiation effects testing and characterization
Proven results with the new product introduction from seed concepts to commercial deployment
Practical knowledge of multi-physics modeling for simulating microstructures and properties based on processing approaches and relevant operating environments
#LI-Onsite #LI-TM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will play a key role in developing dielectric materials suited for high voltage components that maximize efficiency in the extreme environment of a nuclear fusion reactor. Specific responsibilities will include the development and evaluation of novel materials or the assessment and vetting of a wide range of emerging materials with a focus on their extended performance under radiation exposure. In this onsite role, based at our Everett, WA office, you will report to the Director of Materials Science and collaborate closely with cross-functional teams to advance Helion’s mission.\n\nYou Will:\n\n - Lead high impact and multi-disciplinary projects to develop new high-voltage dielectric insulating materials that can perform under applied high-voltage conditions in an advanced fusion generator\n\n - Lead testing campaigns to quantify the electrical properties and behavioral response limits of materials exposed to demanding conditions of heat, stress, and accumulated radiation damage\n\n - Perform comprehensive reviews of published research and development efforts in advanced high-voltage dielectric materials and distill the information into summaries for non-nuclear engineers\n\n - Operate in an environment with obstacles and changing requirements, balancing risks with rapid delivery requirements\n\n - Partner with other internal Helion teams, external vendors, national laboratories, and universities to establish pathways to extended capabilities\n\n - Develop a broad collaborative network and represent Helion at technical meetings and conferences\n\nRequired Skills:\n\n - An advanced degree and/or extensive understanding of electrically insulating and dielectric materials, typically demonstrated by a degree in materials science, electrical engineering, physics, nuclear engineering, or related disciplines and 8+ years of hands-on work\n\n - 8+ years of industry-related experience, including proven results executing R&D and development projects (including design reviews) for a commercial product\n\n - Capability to plan and lead R&D efforts guided by a milestone schedule\n\n - The ideal candidate would have a bias for action, know how to execute with urgency and favor learning through rapid prototyping\n\nPreferred Skills:\n\n - Experience with radiation effects testing and characterization\n\n - Proven results with the new product introduction from seed concepts to commercial deployment\n\n - Practical knowledge of multi-physics modeling for simulating microstructures and properties based on processing approaches and relevant operating environments\n\n\n\n#LI-Onsite #LI-TM1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"443266d6-75c3-4279-ad8a-7473cf05f6c8","title":"Principal Electrical Engineer","department":"Electrical Engineering","team":"Electrical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-12-19T19:05:41.815+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/443266d6-75c3-4279-ad8a-7473cf05f6c8","applyUrl":"https://jobs.ashbyhq.com/helion/443266d6-75c3-4279-ad8a-7473cf05f6c8/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
We are hiring a Principal Electrical Engineer to support the core energy management systems that power Helion’s fusion generators. Your work will focus on high-power electrical systems including energy delivery to pulsed magnetics, energy recovery systems, internal redistribution networks, and grid-tie infrastructure. You will design, commission, and optimize systems that are foundational to delivering clean, low-cost electricity to the world. This is an onsite role that reports directly to Senior Manager of Electrical Engineering at our Everett, WA office.
You Will:
Design, test, troubleshoot, and support high-voltage power systems for pulsed magnetic coils
Oversee design, procurement, construction, and commissioning of systems delivering <1 ms pulses up to 5 MA and 40 kV
Develop system architectures and collaborate with designers on schematics and installation drawings
Lead design reviews to validate cost-effective, scalable, and reliable solutions
Support commissioning and lifetime operation of generator power systems, identifying paths to optimize future builds
Apply rigorous engineering practices, including ownership of cost, schedule, and resource planning for assigned projects
Mentor electrical engineers and collaborate with cross-functional teams to build technical capability across Helion
Required Skills:
12+ years experience in power electronics, solving complex electrical engineering problems from design to delivery
Bachelor’s or Master’s degree in Electrical Engineering, Physics, or a related field
Hands-on experience designing, fabricating, installing, and testing electronic systems
Strong knowledge of solid-state switching technologies and power components such as IGBTs, MOSFETs, and SCRs
Technical depth in engineering principles, codes, and practices with experience coordinating deliverables to meet milestones
Advanced troubleshooting skills with standard benchtop tools (oscilloscopes, E-loads, pulse generators, spectrum analyzers) and PCB design software
Proficiency with tools such as Microsoft Office, LTSpice, SIMetrix/SIMPLIS, Altium, and MATLAB
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nWe are hiring a Principal Electrical Engineer to support the core energy management systems that power Helion’s fusion generators. Your work will focus on high-power electrical systems including energy delivery to pulsed magnetics, energy recovery systems, internal redistribution networks, and grid-tie infrastructure. You will design, commission, and optimize systems that are foundational to delivering clean, low-cost electricity to the world. This is an onsite role that reports directly to Senior Manager of Electrical Engineering at our Everett, WA office.\n\nYou Will:\n\n - Design, test, troubleshoot, and support high-voltage power systems for pulsed magnetic coils\n\n - Oversee design, procurement, construction, and commissioning of systems delivering <1 ms pulses up to 5 MA and 40 kV\n\n - Develop system architectures and collaborate with designers on schematics and installation drawings\n\n - Lead design reviews to validate cost-effective, scalable, and reliable solutions\n\n - Support commissioning and lifetime operation of generator power systems, identifying paths to optimize future builds\n\n - Apply rigorous engineering practices, including ownership of cost, schedule, and resource planning for assigned projects\n\n - Mentor electrical engineers and collaborate with cross-functional teams to build technical capability across Helion\n\nRequired Skills:\n\n - 12+ years experience in power electronics, solving complex electrical engineering problems from design to delivery\n\n - Bachelor’s or Master’s degree in Electrical Engineering, Physics, or a related field\n\n - Hands-on experience designing, fabricating, installing, and testing electronic systems \n\n - Strong knowledge of solid-state switching technologies and power components such as IGBTs, MOSFETs, and SCRs\n\n - Technical depth in engineering principles, codes, and practices with experience coordinating deliverables to meet milestones\n\n - Advanced troubleshooting skills with standard benchtop tools (oscilloscopes, E-loads, pulse generators, spectrum analyzers) and PCB design software\n\n - Proficiency with tools such as Microsoft Office, LTSpice, SIMetrix/SIMPLIS, Altium, and MATLAB\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"459de46a-cfc0-4efe-bc9a-c87d59038ba5","title":"Senior Mechanical Engineer, Plasma Diagnostics","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-07-14T04:31:33.645+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/459de46a-cfc0-4efe-bc9a-c87d59038ba5","applyUrl":"https://jobs.ashbyhq.com/helion/459de46a-cfc0-4efe-bc9a-c87d59038ba5/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
As a Diagnostics Engineer on the Science team at Helion, you will help advance the design and development of next-generation diagnostic instrumentation that supports our mission to achieve fusion energy. Sitting at the intersection of mechanical design, prototyping, and scientific exploration, you'll transform early-stage concepts into robust mechanical systems that enable groundbreaking plasma diagnostics and research. This is an onsite role that reports directly to the Director of Plasma and Nuclear Science at our Everett, WA office.
You Will:
Collaborate with interdisciplinary teams that include scientists, engineers, and product designers, to develop novel mechanical solutions for experimental diagnostic devices
Own the mechanical design of diagnostic systems: define and refine requirements, troubleshoot hardware issues, and drive continuous improvements
Design, prototype, and iterate mechanical components and assemblies using CAD tools (e.g., NX, SolidWorks); perform structural and thermal analysis (e.g., ANSYS); and lead design reviews
Conduct experimental testing, collect and analyze performance data, and support root-cause analyses of mechanical failures or performance deviations
Apply lessons from historical designs, develop innovative hardware, and integrate your solutions into ongoing fusion research experiments
Continuously expand your skills and domain knowledge by learning from Helion’s technical experts and engaging with cutting-edge science and engineering
Required Skills:
Advanced degree in Mechanical Engineering with experience in plasma, laser, aero, or similar specialty
5+ years of hands-on industry experience with diagnostic equipment, laboratory instrumentation, precision sensing, or similar technologies
5+ years of experience with CAD software (e.g. NX, SolidWorks) and FEA software (e.g. ANSYS, FEMAP)
Experience applying engineering first-principles and method-based thinking to challenging first-of-a-kind designs
Hands-on exposure to a variety of engineering disciplines (mechanical, electrical, fluids)
#LI-ONSITE #LI-AM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing: \n\nAs a Diagnostics Engineer on the Science team at Helion, you will help advance the design and development of next-generation diagnostic instrumentation that supports our mission to achieve fusion energy. Sitting at the intersection of mechanical design, prototyping, and scientific exploration, you'll transform early-stage concepts into robust mechanical systems that enable groundbreaking plasma diagnostics and research. This is an onsite role that reports directly to the Director of Plasma and Nuclear Science at our Everett, WA office.\n\nYou Will: \n\n - Collaborate with interdisciplinary teams that include scientists, engineers, and product designers, to develop novel mechanical solutions for experimental diagnostic devices \n\n - Own the mechanical design of diagnostic systems: define and refine requirements, troubleshoot hardware issues, and drive continuous improvements \n\n - Design, prototype, and iterate mechanical components and assemblies using CAD tools (e.g., NX, SolidWorks); perform structural and thermal analysis (e.g., ANSYS); and lead design reviews \n\n - Conduct experimental testing, collect and analyze performance data, and support root-cause analyses of mechanical failures or performance deviations \n\n - Apply lessons from historical designs, develop innovative hardware, and integrate your solutions into ongoing fusion research experiments \n\n - Continuously expand your skills and domain knowledge by learning from Helion’s technical experts and engaging with cutting-edge science and engineering \n\nRequired Skills: \n\n - Advanced degree in Mechanical Engineering with experience in plasma, laser, aero, or similar specialty \n\n - 5+ years of hands-on industry experience with diagnostic equipment, laboratory instrumentation, precision sensing, or similar technologies \n\n - 5+ years of experience with CAD software (e.g. NX, SolidWorks) and FEA software (e.g. ANSYS, FEMAP) \n\n - Experience applying engineering first-principles and method-based thinking to challenging first-of-a-kind designs \n\n - Hands-on exposure to a variety of engineering disciplines (mechanical, electrical, fluids) \n\n#LI-ONSITE #LI-AM1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"46839c07-8a42-4bfe-a832-70678541f1d5","title":"Manufacturing Engineer","department":"Supply Chain","team":"Supply Chain","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-15T17:58:52.108+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/46839c07-8a42-4bfe-a832-70678541f1d5","applyUrl":"https://jobs.ashbyhq.com/helion/46839c07-8a42-4bfe-a832-70678541f1d5/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will design, implement, and optimize the production process for in-house capacitors. This is a unique opportunity to collaborate with other teams (Supply Chain, Production, Engineering, Test Operations), directly influence the commissioning timeline for Helion's first power plant, and lay the groundwork for Helion's transition to generator mass-manufacturing. This is an onsite role that reports to the Factory Development Manager at our Everett, WA office.
You Will:
Design and implement rate-based assembly processes with support from Production and Engineering
Manage interdisciplinary projects to increase rate and throughput of capacitor line (e.g., floor layout, tooling, build cells, large-scale equipment)
Help develop new business processes such as non-conformance management, process control, process safety, and asset maintenance to grow production line and build the foundation for high-volume production
Gather data (labor hours, cycle times, fallout) to identify production bottlenecks, and propose and deploy solutions (design changes, process changes, equipment, automation)
Identify high return-on-investment capabilities, including capital equipment and software capabilities that improve manufacturing processes, partnering with Production, Finance, Operations, and Facilities teams
Collaborate on development of future processes in parallel with supporting and enabling higher output on current production line
Required Skills:
Bachelor’s degree in Manufacturing Engineering, Mechanical Engineering, or related field
2+ years of technical work experience that includes development and improvement of production systems
Hands-on engineering or manufacturing experience in rate-based and high-volume manufacturing
Experience communicating with and influencing partners across organizational lines
Experience in cradle-to-grave ownership of complex engineering or production scopes
#LI-Onsite #LI-SA1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\nWhat You Will Be Doing:\n\nYou will design, implement, and optimize the production process for in-house capacitors. This is a unique opportunity to collaborate with other teams (Supply Chain, Production, Engineering, Test Operations), directly influence the commissioning timeline for Helion's first power plant, and lay the groundwork for Helion's transition to generator mass-manufacturing. This is an onsite role that reports to the Factory Development Manager at our Everett, WA office.\n\n \n\nYou Will:\n\n - Design and implement rate-based assembly processes with support from Production and Engineering\n\n - Manage interdisciplinary projects to increase rate and throughput of capacitor line (e.g., floor layout, tooling, build cells, large-scale equipment)\n\n - Help develop new business processes such as non-conformance management, process control, process safety, and asset maintenance to grow production line and build the foundation for high-volume production\n\n - Gather data (labor hours, cycle times, fallout) to identify production bottlenecks, and propose and deploy solutions (design changes, process changes, equipment, automation)\n\n - Identify high return-on-investment capabilities, including capital equipment and software capabilities that improve manufacturing processes, partnering with Production, Finance, Operations, and Facilities teams\n\n - Collaborate on development of future processes in parallel with supporting and enabling higher output on current production line\n\n \n\nRequired Skills:\n\n - Bachelor’s degree in Manufacturing Engineering, Mechanical Engineering, or related field\n\n - 2+ years of technical work experience that includes development and improvement of production systems\n\n - Hands-on engineering or manufacturing experience in rate-based and high-volume manufacturing\n\n - Experience communicating with and influencing partners across organizational lines\n\n - Experience in cradle-to-grave ownership of complex engineering or production scopes\n\n \n\n#LI-Onsite #LI-SA1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"47995610-109e-45b7-9855-919adde1e803","title":"Principal Plasma Data Scientist","department":"Science","team":"Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-01-21T15:58:47.745+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/47995610-109e-45b7-9855-919adde1e803","applyUrl":"https://jobs.ashbyhq.com/helion/47995610-109e-45b7-9855-919adde1e803/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
Helion is hiring a Plasma Data Scientist specializing in physics‑grounded machine learning to accelerate experimental FRC plasma modeling. This role will focus on developing and validating advanced ML frameworks—such as differentiable‑physics models, PINNs, surrogate modeling, or hybrid physics+ML systems—while integrating these tools with simulation and diagnostics pipelines. You will support cross‑disciplinary fusion research and contribute to high‑impact modeling that informs experimental design and interpretation. This onsite position reports to the Experimental Science Manager at our Everett, WA office and plays a key role in advancing fusion electricity development.
You Will:
Develop and validate machine‑learning frameworks for FRC plasma‑dynamics, leveraging physics‑grounded ML approaches (e.g., differentiable physics, PINNs, surrogate modeling, or hybrid physics+ML systems)
Integrate ML models with existing simulation tools and experimental‑diagnostic pipelines to enable hybrid physics + data‑driven validation workflows
Reproduce experimental plasma conditions within ML modeling workflows to support interpretation of magnetic diffusion, circuit response, and diagnostic measurements
Generate analysis scripts for post‑processing, parsing model outputs, and visualizing correlations between ML‑based predictions and experimental results
Collaborate with plasma‑physics, pulsed‑power, and transient‑magnetics experts to expand the fidelity and fusion‑relevance of ML‑enabled modeling frameworks
Communicate results with rigor and clarity through reports, presentations, and technical visualizations for research stakeholders
Required Skills:
PhD in Physics, Engineering, Applied Math, Computational Science, Machine Learning, or related field with emphasis on physics‑grounded modeling
10+ years of industry or research‑lab experience applying machine learning in experimental, simulation‑driven, or scientific R&D environments
Expertise with physics‑informed or physics‑constrained ML methods, such as differentiable physics, PINNs, scientific ML, surrogate modeling, or reduced‑order models for complex physical systems
Experience integrating ML models with scientific‑computing workflows, simulation tools, or experimental diagnostics
Proficiency scripting for data parsing, model analysis, and visualization (MATLAB, Python, or similar; Fortran or HPC exposure valuable)
Familiarity with magnetic diffusion, circuit coupling, or plasma‑dynamics modeling in pulsed‑power or electromagnetics systems
#LI-Onsite #LI-TG1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nHelion is hiring a Plasma Data Scientist specializing in physics‑grounded machine learning to accelerate experimental FRC plasma modeling. This role will focus on developing and validating advanced ML frameworks—such as differentiable‑physics models, PINNs, surrogate modeling, or hybrid physics+ML systems—while integrating these tools with simulation and diagnostics pipelines. You will support cross‑disciplinary fusion research and contribute to high‑impact modeling that informs experimental design and interpretation. This onsite position reports to the Experimental Science Manager at our Everett, WA office and plays a key role in advancing fusion electricity development. \n\nYou Will:\n\n - Develop and validate machine‑learning frameworks for FRC plasma‑dynamics, leveraging physics‑grounded ML approaches (e.g., differentiable physics, PINNs, surrogate modeling, or hybrid physics+ML systems) \n\n - Integrate ML models with existing simulation tools and experimental‑diagnostic pipelines to enable hybrid physics + data‑driven validation workflows \n\n - Reproduce experimental plasma conditions within ML modeling workflows to support interpretation of magnetic diffusion, circuit response, and diagnostic measurements \n\n - Generate analysis scripts for post‑processing, parsing model outputs, and visualizing correlations between ML‑based predictions and experimental results \n\n - Collaborate with plasma‑physics, pulsed‑power, and transient‑magnetics experts to expand the fidelity and fusion‑relevance of ML‑enabled modeling frameworks \n\n - Communicate results with rigor and clarity through reports, presentations, and technical visualizations for research stakeholders \n\nRequired Skills:\n\n - PhD in Physics, Engineering, Applied Math, Computational Science, Machine Learning, or related field with emphasis on physics‑grounded modeling \n\n - 10+ years of industry or research‑lab experience applying machine learning in experimental, simulation‑driven, or scientific R&D environments \n\n - Expertise with physics‑informed or physics‑constrained ML methods, such as differentiable physics, PINNs, scientific ML, surrogate modeling, or reduced‑order models for complex physical systems \n\n - Experience integrating ML models with scientific‑computing workflows, simulation tools, or experimental diagnostics \n\n - Proficiency scripting for data parsing, model analysis, and visualization (MATLAB, Python, or similar; Fortran or HPC exposure valuable) \n\n - Familiarity with magnetic diffusion, circuit coupling, or plasma‑dynamics modeling in pulsed‑power or electromagnetics systems \n\n#LI-Onsite #LI-TG1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"483e8771-3980-486b-b49d-abf0c136090f","title":"Manager, Fusion Test & Operations","department":"Research & Development ","team":"Research & Development ","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-03-27T20:44:48.691+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/483e8771-3980-486b-b49d-abf0c136090f","applyUrl":"https://jobs.ashbyhq.com/helion/483e8771-3980-486b-b49d-abf0c136090f/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will lead the development of engineers and scientists that will bring the most powerful, controlled pulsed-fusion device ever constructed online, to generate electrical power. As a leader within the Research and Development team, you will grow and lead a high-performance operating team in the research and development of fusion technology and experiments, control high-energy systems, and design diagnostics for advanced plasma devices. You will report to the Senior R&D Manager, and this is an onsite role located at our Everett, WA office.
You Will:
Grow and mentor a team of multidisciplinary engineers and scientists
Drive schedule ownership and optimization across the team to accelerate milestone achievement
Collaborate with Engineering, Science, and Production teams to derive system requirements and meet program goals
Contribute to the testing and operation of Field-Reversed Configuration (FRC) fusion devices
Lead engineers and scientists in the design and execution of plasma and high-energy experiments
Educate and facilitate work performed by the team on large-scale vacuum systems greater than one meter in diameter
Apply plasma physics concepts to support your team in creating FRCs and implement diagnostics to measure magnetic fields, fusion products, and plasma characteristics
Mentoring Operators in using critical reasoning to evaluate and improve technical solutions
Required Skills:
B.S. with 8+ years of engineering experience, or M.S. with 4+ years of relevant experience in Aerospace, Nuclear Engineering, Mechanical Engineering, Physics, or a related field
1+ years in a technical leadership or management role
Proven ability to mentor engineers and positively impact their career progression
Experience leading multidisciplinary teams with full project ownership
Proven experience designing, building, and operating complex experiments with a focus on diagnostics and continuous improvement
Hands-on experience across multiple engineering disciplines
Ability to apply first-principles thinking to solve complex technical problems
Demonstrated ability to rapidly learn new technologies and take ownership of project areas
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will lead the development of engineers and scientists that will bring the most powerful, controlled pulsed-fusion device ever constructed online, to generate electrical power. As a leader within the Research and Development team, you will grow and lead a high-performance operating team in the research and development of fusion technology and experiments, control high-energy systems, and design diagnostics for advanced plasma devices. You will report to the Senior R&D Manager, and this is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Grow and mentor a team of multidisciplinary engineers and scientists\n\n - Drive schedule ownership and optimization across the team to accelerate milestone achievement\n\n - Collaborate with Engineering, Science, and Production teams to derive system requirements and meet program goals\n\n - Contribute to the testing and operation of Field-Reversed Configuration (FRC) fusion devices\n\n - Lead engineers and scientists in the design and execution of plasma and high-energy experiments\n\n - Educate and facilitate work performed by the team on large-scale vacuum systems greater than one meter in diameter\n\n - Apply plasma physics concepts to support your team in creating FRCs and implement diagnostics to measure magnetic fields, fusion products, and plasma characteristics\n\n - Mentoring Operators in using critical reasoning to evaluate and improve technical solutions\n\nRequired Skills:\n\n - B.S. with 8+ years of engineering experience, or M.S. with 4+ years of relevant experience in Aerospace, Nuclear Engineering, Mechanical Engineering, Physics, or a related field\n\n - 1+ years in a technical leadership or management role\n\n - Proven ability to mentor engineers and positively impact their career progression\n\n - Experience leading multidisciplinary teams with full project ownership\n\n - Proven experience designing, building, and operating complex experiments with a focus on diagnostics and continuous improvement\n\n - Hands-on experience across multiple engineering disciplines\n\n - Ability to apply first-principles thinking to solve complex technical problems\n\n - Demonstrated ability to rapidly learn new technologies and take ownership of project areas\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"485ea7e2-af46-4b79-a6dc-df859e3eaa9b","title":"Principal Power Electronics Engineer","department":"Electrical Engineering","team":"Electrical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-12-19T19:05:43.317+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/485ea7e2-af46-4b79-a6dc-df859e3eaa9b","applyUrl":"https://jobs.ashbyhq.com/helion/485ea7e2-af46-4b79-a6dc-df859e3eaa9b/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
We are hiring a Principal Power Electronics Engineer to support the core energy management systems that power Helion’s fusion generators. Your work will focus on high-power electrical systems including energy delivery to pulsed magnetics, energy recovery systems, internal redistribution networks, and grid-tie infrastructure. You will design, commission, and optimize systems that are foundational to delivering clean, low-cost electricity to the world. This is an onsite role that reports directly to Manager of Electrical Engineering at our Everett, WA office.
You Will:
Design, test, troubleshoot, and support high-voltage power systems for pulsed magnetic coils
Oversee design, procurement, construction, and commissioning of systems delivering <1 ms pulses up to 5 MA and 40 kV
Develop system architectures and collaborate with designers on schematics and installation drawings
Lead design reviews to validate cost-effective, scalable, and reliable solutions
Support commissioning and lifetime operation of generator power systems, identifying paths to optimize future builds
Apply rigorous engineering practices, including ownership of cost, schedule, and resource planning for assigned projects
Mentor electrical engineers and collaborate with cross-functional teams to build technical capability across Helion
Required Skills:
12+ years experience in power electronics, solving complex electrical engineering problems from design to delivery
Bachelor’s or Master’s degree in Electrical Engineering, Physics, or a related field
Hands-on experience designing, fabricating, installing, and testing electronic systems
Strong knowledge of solid-state switching technologies and power components such as IGBTs, MOSFETs, and SCRs
Technical depth in engineering principles, codes, and practices with experience coordinating deliverables to meet milestones
Advanced troubleshooting skills with standard benchtop tools (oscilloscopes, E-loads, pulse generators, spectrum analyzers) and PCB design software
Proficiency with tools such as Microsoft Office, LTSpice, SIMetrix/SIMPLIS, Altium, and MATLAB
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nWe are hiring a Principal Power Electronics Engineer to support the core energy management systems that power Helion’s fusion generators. Your work will focus on high-power electrical systems including energy delivery to pulsed magnetics, energy recovery systems, internal redistribution networks, and grid-tie infrastructure. You will design, commission, and optimize systems that are foundational to delivering clean, low-cost electricity to the world. This is an onsite role that reports directly to Manager of Electrical Engineering at our Everett, WA office.\n\nYou Will:\n\n - Design, test, troubleshoot, and support high-voltage power systems for pulsed magnetic coils\n\n - Oversee design, procurement, construction, and commissioning of systems delivering <1 ms pulses up to 5 MA and 40 kV\n\n - Develop system architectures and collaborate with designers on schematics and installation drawings\n\n - Lead design reviews to validate cost-effective, scalable, and reliable solutions\n\n - Support commissioning and lifetime operation of generator power systems, identifying paths to optimize future builds\n\n - Apply rigorous engineering practices, including ownership of cost, schedule, and resource planning for assigned projects\n\n - Mentor electrical engineers and collaborate with cross-functional teams to build technical capability across Helion\n\nRequired Skills:\n\n - 12+ years experience in power electronics, solving complex electrical engineering problems from design to delivery\n\n - Bachelor’s or Master’s degree in Electrical Engineering, Physics, or a related field\n\n - Hands-on experience designing, fabricating, installing, and testing electronic systems \n\n - Strong knowledge of solid-state switching technologies and power components such as IGBTs, MOSFETs, and SCRs\n\n - Technical depth in engineering principles, codes, and practices with experience coordinating deliverables to meet milestones\n\n - Advanced troubleshooting skills with standard benchtop tools (oscilloscopes, E-loads, pulse generators, spectrum analyzers) and PCB design software\n\n - Proficiency with tools such as Microsoft Office, LTSpice, SIMetrix/SIMPLIS, Altium, and MATLAB\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"48b798be-5137-4d66-9b1b-473c9c92c0a7","title":"Electrical Engineer","department":"Electrical Engineering","team":"Electrical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-02-26T19:33:52.573+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/48b798be-5137-4d66-9b1b-473c9c92c0a7","applyUrl":"https://jobs.ashbyhq.com/helion/48b798be-5137-4d66-9b1b-473c9c92c0a7/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will play a critical role in supporting the core electrical energy management systems that power our fusion generators. Our work spans pulsed power delivery to magnetics, power electronics and fusion energy recovery, low voltage controls and networking, and precision sensing in electrically noisy environments.
We look for strong electrical engineers who bring deep expertise in a few areas and give them real ownership immediately. You’ll focus on the areas where your strengths drive the most impact today, while gaining hands-on opportunities to grow into expanded scopes and solve system-level challenges.
Focus Areas:
High Voltage/Pulsed Power Systems
Design, test, troubleshoot, support, and scale high-voltage systems for driving pulsed magnetic coils (1<ms) at currents up to 5MA and voltage up to 40kV
Evaluate and apply solid-state switching devices (IGBTs, MOSFETs, SCRs/thyristors) with attention to losses, protection, di/dt, dv/dt, and thermal performance
Specify and integrate high energy components (capacitors, switches, pulse forming networks, buswork, protection, grounding)
Power Electronics
Design, test, scale, and integrate DC/DC, AC/DC, DC/AC converters used for energy delivery, energy recovery, and distribution ranging from hundreds of volts to thousands of volts
Develop switching-stage designs including half/full bridges, phase-shifted/full-bridge, LLC/series-resonant, or buck/boost-derived converters (topology selection based on efficiency, controllability, and fault behavior)
Low Voltage Control and Diagnostics
Design low voltage control electronics and PCBAs that interface with high energy systems
Own schematic capture and support layout, help scale PCBA deliveries to tens of thousands of boards
Build analog front ends for current/voltage/field/temp and other diagnostics: amplification, filtering, isolation, ADC interfacing
Ensure measurement integrity in high EMI environments (noise mitigation, grounding, shielding, calibration strategies)
Partner with firmware/software teams on acquisition requirements and data quality
Required Skills:
2+ years experience in power electronics, solving complex electrical engineering problems from design to delivery
Bachelor’s or Master’s level degree in Electrical Engineering, Physics, or a related technical field
Demonstrated strength in at least one of the focus areas above
Hands-on troubleshooting ability with standard lab equipment (oscilloscope, DMM, power supplies, loads, function/pulse generators, etc)
Comfortable working in high-energy or electrically noisy environments with strong safety mindset and disciplined documentation
Experience with Microsoft Suite, LTSpice, SIMetrix/SIMPLIS, Simulink, Python, and/or MATLAB
#LI-Onsite
#LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\nYou will play a critical role in supporting the core electrical energy management systems that power our fusion generators. Our work spans pulsed power delivery to magnetics, power electronics and fusion energy recovery, low voltage controls and networking, and precision sensing in electrically noisy environments.\n\nWe look for strong electrical engineers who bring deep expertise in a few areas and give them real ownership immediately. You’ll focus on the areas where your strengths drive the most impact today, while gaining hands-on opportunities to grow into expanded scopes and solve system-level challenges.\n\nFocus Areas:\n\n 1. High Voltage/Pulsed Power Systems\n \n - Design, test, troubleshoot, support, and scale high-voltage systems for driving pulsed magnetic coils (1We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
About The Role
In this role, you will own the design and execution of critical plant systems that make fusion power possible - from radiation shielding and gas handling to thermal management and heat recovery. This role is at the heart of translating fusion physics into practical power generation. You’ll build and lead teams that integrate Helion’s fusion generators with the systems that extract, move, and manage energy at scale. It’s a rare opportunity to lead multidisciplinary engineering at the edge of what’s possible and you'll have direct ownership of the systems that will define the world’s first fusion power plant. This is an onsite role that reports directly to the VP of Engineering at our Everett, WA office.
What You Will Be Doing:
Build and lead high-performing engineering teams across mechanical, thermal, and fluid systems
Own the design and delivery of critical plant systems — radiation shielding, fuel and exhaust gas systems, vacuum infrastructure, and thermal management
Partner with nuclear, magnet, and systems engineering teams to integrate fusion generators into a cohesive power plant
Drive cross-functional engineering execution — from early concept to detailed design, manufacturing, and test
Set the technical bar for rigor, documentation, and accountability, ensuring safety, scalability, and reliability
Continually raise the standard for ownership, execution pace, and design clarity across your teams
Develop the next generation of Helion engineering leaders through mentorship and example.
Required Skills
A degree in engineering or sciences
10+ years of multidisciplinary engineering experience, including 5+ in technical leadership or management
Proven success leading complex system design from concept through deployment
Expertise in one or more of the following: mechanical systems, heat transfer, vacuum systems, or process engineering
Demonstrated ability to build structure and focus in fast-moving, high-ambiguity environments while building teams that execute
A leadership style that aligns with Helion's values - ownership, urgency, rigor and truth
#LI-Onsite
#LI-MT1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nAbout The Role\n\nIn this role, you will own the design and execution of critical plant systems that make fusion power possible - from radiation shielding and gas handling to thermal management and heat recovery. This role is at the heart of translating fusion physics into practical power generation. You’ll build and lead teams that integrate Helion’s fusion generators with the systems that extract, move, and manage energy at scale. It’s a rare opportunity to lead multidisciplinary engineering at the edge of what’s possible and you'll have direct ownership of the systems that will define the world’s first fusion power plant. This is an onsite role that reports directly to the VP of Engineering at our Everett, WA office.\n\nWhat You Will Be Doing:\n\n - Build and lead high-performing engineering teams across mechanical, thermal, and fluid systems\n\n - Own the design and delivery of critical plant systems — radiation shielding, fuel and exhaust gas systems, vacuum infrastructure, and thermal management\n\n - Partner with nuclear, magnet, and systems engineering teams to integrate fusion generators into a cohesive power plant\n\n - Drive cross-functional engineering execution — from early concept to detailed design, manufacturing, and test\n\n - Set the technical bar for rigor, documentation, and accountability, ensuring safety, scalability, and reliability\n\n - Continually raise the standard for ownership, execution pace, and design clarity across your teams\n\n - Develop the next generation of Helion engineering leaders through mentorship and example.\n\nRequired Skills\n\n - A degree in engineering or sciences\n\n - 10+ years of multidisciplinary engineering experience, including 5+ in technical leadership or management\n\n - Proven success leading complex system design from concept through deployment\n\n - Expertise in one or more of the following: mechanical systems, heat transfer, vacuum systems, or process engineering\n\n - Demonstrated ability to build structure and focus in fast-moving, high-ambiguity environments while building teams that execute\n\n - A leadership style that aligns with Helion's values - ownership, urgency, rigor and truth\n\n#LI-Onsite\n\n#LI-MT1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"4c29decd-568f-45d6-aa8b-4e6334b71f2f","title":"Senior Manager, Electrical Engineering","department":"Electrical Engineering","team":"Electrical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-12-19T19:19:03.080+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/4c29decd-568f-45d6-aa8b-4e6334b71f2f","applyUrl":"https://jobs.ashbyhq.com/helion/4c29decd-568f-45d6-aa8b-4e6334b71f2f/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
As a Senior Manager of Electrical Engineering, you will lead the development of novel circuit designs and hardware systems for Helion’s fusion devices. Your primary responsibility will be to grow and lead a high-performing electrical engineering team by providing mentorship, modeling technical excellence, and driving execution speed. You will solve complex engineering challenges that directly impact machine performance and help deliver clean, low-cost, reliable electricity to the world. This is an onsite role that reports directly to Senior Manager of Electrical Engineering at our Everett, WA office.
You will:
Set the standard for how fast Helion designs and builds electrical systems and ultimately delivers clean, low-cost, and reliable electricity to the world
Create a world-class engineering team and continually raise the bar for speed of execution and technical rigor
Manage the team’s end-to-end ownership of high-energy power circuits (kVDC, kVAC, kA, MJ)
Accelerate Helion’s development of custom grid tie-in hardware and/or implementation of highly efficient off-the-shelf components
Collaborate with cross-functional teams to improve generator performance and reliability
Develop and maintain a roadmap to mass-production, optimizing for scalability and cost
Required skills:
Bachelor’s degree in Engineering or a related discipline
Minimum of 10+ years of engineering experience and 3+ years of engineering management experience
Experience in taking multidisciplinary problems from concept to design, manufacturing, test, and deployment
Autonomous ownership of complex engineering projects (including schedule ownership)
Exceptional leadership of engineers with a wide range of experiences and backgrounds
Hands-on exposure to a variety of electrical disciplines
Ability to apply engineering first-principles and analytical rigor to challenging problems
Success scaling complex systems while reducing design iteration time with a lean team
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\n \n\nAs a Senior Manager of Electrical Engineering, you will lead the development of novel circuit designs and hardware systems for Helion’s fusion devices. Your primary responsibility will be to grow and lead a high-performing electrical engineering team by providing mentorship, modeling technical excellence, and driving execution speed. You will solve complex engineering challenges that directly impact machine performance and help deliver clean, low-cost, reliable electricity to the world. This is an onsite role that reports directly to Senior Manager of Electrical Engineering at our Everett, WA office.\n\n \n\nYou will:\n\n - Set the standard for how fast Helion designs and builds electrical systems and ultimately delivers clean, low-cost, and reliable electricity to the world\n\n - Create a world-class engineering team and continually raise the bar for speed of execution and technical rigor\n\n - Manage the team’s end-to-end ownership of high-energy power circuits (kVDC, kVAC, kA, MJ)\n\n - Accelerate Helion’s development of custom grid tie-in hardware and/or implementation of highly efficient off-the-shelf components\n\n - Collaborate with cross-functional teams to improve generator performance and reliability\n\n - Develop and maintain a roadmap to mass-production, optimizing for scalability and cost\n\nRequired skills:\n\n - Bachelor’s degree in Engineering or a related discipline\n\n - Minimum of 10+ years of engineering experience and 3+ years of engineering management experience\n\n - Experience in taking multidisciplinary problems from concept to design, manufacturing, test, and deployment\n\n - Autonomous ownership of complex engineering projects (including schedule ownership)\n\n - Exceptional leadership of engineers with a wide range of experiences and backgrounds\n\n - Hands-on exposure to a variety of electrical disciplines\n\n - Ability to apply engineering first-principles and analytical rigor to challenging problems\n\n - Success scaling complex systems while reducing design iteration time with a lean team\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"4e875f71-8d2e-41a6-951a-690132c46b0c","title":"Supplier Development Engineer, Mechanical","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-12-19T19:53:20.056+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/4e875f71-8d2e-41a6-951a-690132c46b0c","applyUrl":"https://jobs.ashbyhq.com/helion/4e875f71-8d2e-41a6-951a-690132c46b0c/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
We are hiring a Supplier Development Engineer to work with suppliers to make parts for fusion generators. You will solve technical problems, develop our supplier's quality systems, and accelerate Helion's transition from rapid prototyping to mass generator manufacturing, thus delivering on Helion's mission of providing clean electricity to the planet. You will report to the Senior Manager of Engineering, and this is an onsite role located at our Everett, WA office.
You Will:
Collaborate with design engineers to gain an in-depth knowledge of part, assembly, and sub-system design intent
Assess suppliers' manufacturing processes and quality systems to source parts, in partnership with procurement team
Support product ramp from new product introduction through to high-volume manufacturing
Define supplier technical and quality specifications based on engineering and program requirements
Implement and monitor the production part approval process (PPAP) with selected suppliers to promote rate production
Ensure suppliers understand requirements for document submissions (e.g., first article inspection reports, quality documentation)
Develop and approve process controls for important characteristics
Recommend technical product improvements to reduce risk and potential defect opportunities
Analyze supplier quality and delivery metrics to identify trends and systemic performance gaps to improve plans
Coordinate between suppliers, engineers, buyers, and production to resolve supplier quality issues
Guide supplier corrective actions associated with escapes or containments identified in production or the supply chain
Improve the supply chain
Help build the supplier quality program and team at Helion
Help develop receiving inspection and quality standards
Required Skills:
5+ years of engineering, manufacturing, or supply chain experience—including school projects, clubs, or internships—in mechanical or electrical systems
Bachelor's degree or higher in an engineering discipline, or relevant field
Experience managing external suppliers
Knowledge of supplier quality processes (e.g., production part approval process, advanced product quality planning, first article inspection reports)
Knowledge of statistical techniques and methods (e.g., design of experiments, Six Sigma)
Experience with quality systems (ISO 9000 / TS)
Able to travel up to 50% of the time
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nWe are hiring a Supplier Development Engineer to work with suppliers to make parts for fusion generators. You will solve technical problems, develop our supplier's quality systems, and accelerate Helion's transition from rapid prototyping to mass generator manufacturing, thus delivering on Helion's mission of providing clean electricity to the planet. You will report to the Senior Manager of Engineering, and this is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Collaborate with design engineers to gain an in-depth knowledge of part, assembly, and sub-system design intent\n\n - Assess suppliers' manufacturing processes and quality systems to source parts, in partnership with procurement team\n\n - Support product ramp from new product introduction through to high-volume manufacturing\n\n - Define supplier technical and quality specifications based on engineering and program requirements\n\n - Implement and monitor the production part approval process (PPAP) with selected suppliers to promote rate production\n\n - Ensure suppliers understand requirements for document submissions (e.g., first article inspection reports, quality documentation)\n\n - Develop and approve process controls for important characteristics\n\n - Recommend technical product improvements to reduce risk and potential defect opportunities\n\n - Analyze supplier quality and delivery metrics to identify trends and systemic performance gaps to improve plans\n\n - Coordinate between suppliers, engineers, buyers, and production to resolve supplier quality issues\n\n - Guide supplier corrective actions associated with escapes or containments identified in production or the supply chain\n\n - Improve the supply chain\n\n - Help build the supplier quality program and team at Helion\n\n - Help develop receiving inspection and quality standards\n\nRequired Skills:\n\n - 5+ years of engineering, manufacturing, or supply chain experience—including school projects, clubs, or internships—in mechanical or electrical systems\n\n - Bachelor's degree or higher in an engineering discipline, or relevant field\n\n - Experience managing external suppliers\n\n - Knowledge of supplier quality processes (e.g., production part approval process, advanced product quality planning, first article inspection reports)\n\n - Knowledge of statistical techniques and methods (e.g., design of experiments, Six Sigma)\n\n - Experience with quality systems (ISO 9000 / TS)\n\n - Able to travel up to 50% of the time\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"4f0b0e62-cdd6-4f66-803b-c2d8ee3703c0","title":"Power Electronics Engineer","department":"Electrical Engineering","team":"Electrical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-02-26T19:24:54.850+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/4f0b0e62-cdd6-4f66-803b-c2d8ee3703c0","applyUrl":"https://jobs.ashbyhq.com/helion/4f0b0e62-cdd6-4f66-803b-c2d8ee3703c0/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will play a critical role in supporting the core electrical energy management systems that power our fusion generators. Our work spans pulsed power delivery to magnetics, power electronics and fusion energy recovery, low voltage controls and networking, and precision sensing in electrically noisy environments.
We look for strong electrical engineers who bring deep expertise in a few areas and give them real ownership immediately. You’ll focus on the areas where your strengths drive the most impact today, while gaining hands-on opportunities to grow into expanded scopes and solve system-level challenges.
Focus Areas:
High Voltage/Pulsed Power Systems
Design, test, troubleshoot, support, and scale high-voltage systems for driving pulsed magnetic coils (1<ms) at currents up to 5MA and voltage up to 40kV
Evaluate and apply solid-state switching devices (IGBTs, MOSFETs, SCRs/thyristors) with attention to losses, protection, di/dt, dv/dt, and thermal performance
Specify and integrate high energy components (capacitors, switches, pulse forming networks, buswork, protection, grounding)
Power Electronics
Design, test, scale, and integrate DC/DC, AC/DC, DC/AC converters used for energy delivery, energy recovery, and distribution ranging from hundreds of volts to thousands of volts
Develop switching-stage designs including half/full bridges, phase-shifted/full-bridge, LLC/series-resonant, or buck/boost-derived converters (topology selection based on efficiency, controllability, and fault behavior)
Low Voltage Control and Diagnostics
Design low voltage control electronics and PCBAs that interface with high energy systems
Own schematic capture and support layout, help scale PCBA deliveries to tens of thousands of boards
Build analog front ends for current/voltage/field/temp and other diagnostics: amplification, filtering, isolation, ADC interfacing
Ensure measurement integrity in high EMI environments (noise mitigation, grounding, shielding, calibration strategies)
Partner with firmware/software teams on acquisition requirements and data quality
Required Skills:
2+ years experience in power electronics, solving complex electrical engineering problems from design to delivery
Bachelor’s or Master’s level degree in Electrical Engineering, Physics, or a related technical field
Demonstrated strength in at least one of the focus areas above
Hands-on troubleshooting ability with standard lab equipment (oscilloscope, DMM, power supplies, loads, function/pulse generators, etc)
Comfortable working in high-energy or electrically noisy environments with strong safety mindset and disciplined documentation
Experience with Microsoft Suite, LTSpice, SIMetrix/SIMPLIS, Simulink, Python, and/or MATLAB
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\nYou will play a critical role in supporting the core electrical energy management systems that power our fusion generators. Our work spans pulsed power delivery to magnetics, power electronics and fusion energy recovery, low voltage controls and networking, and precision sensing in electrically noisy environments.\n\nWe look for strong electrical engineers who bring deep expertise in a few areas and give them real ownership immediately. You’ll focus on the areas where your strengths drive the most impact today, while gaining hands-on opportunities to grow into expanded scopes and solve system-level challenges.\n\nFocus Areas:\n\n 1. High Voltage/Pulsed Power Systems\n \n - Design, test, troubleshoot, support, and scale high-voltage systems for driving pulsed magnetic coils (1We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing
You’ll grow and lead a team that bridges physics, electrical design, software engineering, and operations — creating a unified platform that allows fusion machines to operate efficiently, adapt to grid conditions, and evolve toward commercial reliability. You will report to the Senior Manager of Electrical Engineering and this is an onsite role located at our Everett, WA office.
You will:
Build and lead a multidisciplinary team of software, firmware, and electrical engineers developing the full control stack for a fusion power plant — from embedded controllers to supervisory automation and data pipelines
Own the plant-level control system — both the closed-loop control of critical subsystems (thermal management, grid interface, uptime management) and the supervisory coordination layer that orchestrates overall plant behavior
Guide system design and implementation of hardware and software for reliable, real-time control, ensuring consistent plant performance during scheduled operations and dynamic grid events
Coordinate cross-disciplinary development between hardware owners, data analysts, and operations teams to translate machine capability and experimental intent into robust, testable control logic
Develop front-end control and visualization interfaces that support both rapid experimental iteration and long-term automated operation
Architect scalable back-end data systems capable of acquiring and correlating signals and events spanning nanoseconds to weeks — integrating high-speed acquisition hardware, streaming frameworks, and long-term storage systems
Drive design reviews, reliability improvements, and fault response strategies that maximize plant uptime and ensure graceful recovery from operational faults
Mentor and grow a world-class technical team, balancing hands-on leadership with long-term vision for automation and control of fusion plants at commercial scale
Required Skills & Experience
Bachelor’s degree in Engineering or a related discipline
7+ years of engineering experience, including 2+ years in a technical leadership or management role
Proven experience leading or managing multidisciplinary engineering teams (software, firmware, and electrical)
Deep technical understanding of real-time or embedded control systems, including firmware and hardware interface design
Proficiency with software development and deployment in languages such as Python, C/C++, or Rust
Experience with control system frameworks (e.g., EPICS, ROS, or custom industrial control architectures)
Familiarity with analog and digital circuit fundamentals, embedded processor design, and hardware bring-up
Strong background in data acquisition and signal processing — from high-speed transient capture to long-term trend analysis
Understanding of networked control and telemetry systems, including message buses, data serialization, and fault-tolerant design
Demonstrated ability to deliver integrated hardware-software systems in complex, high-reliability environments
Excellent cross-disciplinary communication skills and ability to work across research, hardware, and operations teams
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing\n\nYou’ll grow and lead a team that bridges physics, electrical design, software engineering, and operations — creating a unified platform that allows fusion machines to operate efficiently, adapt to grid conditions, and evolve toward commercial reliability. You will report to the Senior Manager of Electrical Engineering and this is an onsite role located at our Everett, WA office.\n\nYou will:\n\n - Build and lead a multidisciplinary team of software, firmware, and electrical engineers developing the full control stack for a fusion power plant — from embedded controllers to supervisory automation and data pipelines\n\n - Own the plant-level control system — both the closed-loop control of critical subsystems (thermal management, grid interface, uptime management) and the supervisory coordination layer that orchestrates overall plant behavior\n\n - Guide system design and implementation of hardware and software for reliable, real-time control, ensuring consistent plant performance during scheduled operations and dynamic grid events\n\n - Coordinate cross-disciplinary development between hardware owners, data analysts, and operations teams to translate machine capability and experimental intent into robust, testable control logic\n\n - Develop front-end control and visualization interfaces that support both rapid experimental iteration and long-term automated operation\n\n - Architect scalable back-end data systems capable of acquiring and correlating signals and events spanning nanoseconds to weeks — integrating high-speed acquisition hardware, streaming frameworks, and long-term storage systems\n\n - Drive design reviews, reliability improvements, and fault response strategies that maximize plant uptime and ensure graceful recovery from operational faults\n\n - Mentor and grow a world-class technical team, balancing hands-on leadership with long-term vision for automation and control of fusion plants at commercial scale\n\nRequired Skills & Experience\n\n \n\n - Bachelor’s degree in Engineering or a related discipline\n\n - 7+ years of engineering experience, including 2+ years in a technical leadership or management role\n\n - Proven experience leading or managing multidisciplinary engineering teams (software, firmware, and electrical)\n\n - Deep technical understanding of real-time or embedded control systems, including firmware and hardware interface design\n\n - Proficiency with software development and deployment in languages such as Python, C/C++, or Rust\n\n - Experience with control system frameworks (e.g., EPICS, ROS, or custom industrial control architectures)\n\n - Familiarity with analog and digital circuit fundamentals, embedded processor design, and hardware bring-up\n\n - Strong background in data acquisition and signal processing — from high-speed transient capture to long-term trend analysis\n\n - Understanding of networked control and telemetry systems, including message buses, data serialization, and fault-tolerant design\n\n - Demonstrated ability to deliver integrated hardware-software systems in complex, high-reliability environments\n\n - Excellent cross-disciplinary communication skills and ability to work across research, hardware, and operations teams\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"51cd97ea-7a13-41c9-bd0a-0ce893f0b99f","title":"Manager, Controls Development Engineering","department":"Capacitor Manufacturing","team":"Capacitor Manufacturing","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-03-10T22:38:16.327+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/51cd97ea-7a13-41c9-bd0a-0ce893f0b99f","applyUrl":"https://jobs.ashbyhq.com/helion/51cd97ea-7a13-41c9-bd0a-0ce893f0b99f/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will lead and build a team of Controls Development and Test Automation Engineers to develop and implement automation, controls and testing standards for Helion’s capacitor bank production. In this role, you’ll guide the transition from rapid prototyping to high-volume manufacturing, helping advance Helion’s mission to deliver clean, sustainable electricity to the world. This is an onsite role that reports directly to the Factory Development Manager at our Everett, WA office.
You Will:
Lead and scale a high-performance team of Automation, Controls and Test Engineers to design, scale, and launch first-of-a-kind products into production
Develop and standardize manufacturing automation architectures for deployment across multiple production lines
Collaborate with equipment suppliers on system design, functionality, design reviews, acceptance testing, and equipment buyoff
Implement compliant safety and control systems (ANSI/ISO/OSHA) and produce electrical and pneumatic schematics for automated manufacturing equipment
Optimize and maintain production performance by enabling equipment data reporting (OEE and machine-level metrics), troubleshooting downtime, identifying root causes, and implementing long-term solutions
Required Skills:
7+ years of experience in manufacturing controls within a high-volume production environment
2+ years of leadership experience, managing, scaling, and developing engineering teams
Demonstrated success in developing engineers and leaders, with an emphasis on career growth and team capability building
Proven ability to lead complex engineering projects, own schedules and deliverables, and collaborate cross-functional
Extensive experience in machine safety design for automated manufacturing equipment
#LI-ONSITE #LI-SA1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\nWhat You Will Be Doing:\n\nYou will lead and build a team of Controls Development and Test Automation Engineers to develop and implement automation, controls and testing standards for Helion’s capacitor bank production. In this role, you’ll guide the transition from rapid prototyping to high-volume manufacturing, helping advance Helion’s mission to deliver clean, sustainable electricity to the world. This is an onsite role that reports directly to the Factory Development Manager at our Everett, WA office.\n\n\n\nYou Will:\n\n - Lead and scale a high-performance team of Automation, Controls and Test Engineers to design, scale, and launch first-of-a-kind products into production\n\n - Develop and standardize manufacturing automation architectures for deployment across multiple production lines\n\n - Collaborate with equipment suppliers on system design, functionality, design reviews, acceptance testing, and equipment buyoff\n\n - Implement compliant safety and control systems (ANSI/ISO/OSHA) and produce electrical and pneumatic schematics for automated manufacturing equipment\n\n - Optimize and maintain production performance by enabling equipment data reporting (OEE and machine-level metrics), troubleshooting downtime, identifying root causes, and implementing long-term solutions\n\n\n\nRequired Skills:\n\n - 7+ years of experience in manufacturing controls within a high-volume production environment\n\n - 2+ years of leadership experience, managing, scaling, and developing engineering teams\n\n - Demonstrated success in developing engineers and leaders, with an emphasis on career growth and team capability building\n\n - Proven ability to lead complex engineering projects, own schedules and deliverables, and collaborate cross-functional\n\n - Extensive experience in machine safety design for automated manufacturing equipment\n\n\n\n#LI-ONSITE #LI-SA1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"520b0353-7275-447b-ad13-4b283e1b102e","title":"Senior Procurement Specialist","department":"Supply Chain","team":"Supply Chain","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-04-02T21:20:17.125+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/520b0353-7275-447b-ad13-4b283e1b102e","applyUrl":"https://jobs.ashbyhq.com/helion/520b0353-7275-447b-ad13-4b283e1b102e/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
We are seeking a proactive and technically minded Procurement Specialist to join our growing team. You'll collaborate closely with cross-functional teams, primarily our mechanical engineering and machining teams to source and procure custom mechanical parts and raw materials. This position offers the opportunity to lead key initiatives that strengthen our supply chain and vendor partnerships. This is an onsite role that reports directly to the Manager of Sourcing and Procurement at our Everett, WA office.
You Will
Source raw material (aluminum, stainless steel, copper, G10, HDPE, etc) in various form factors (bar, plate, sheet, tubing, etc), CNC cutting tools (mills, drills, reamers, inserts, etc), and workholding (vises, chucks, fixtures, clamps, etc) as needed to support operations.
Support in-source/out-source decision making to procure custom mechanical parts in collaboration with engineering and machining teams. Drive BOM cost reductions and secure production capacity to meet production and prototype NPI schedule requirements.
Identify new vendors and maintain strong relationships with existing vendors to develop a diverse and robust supply chain.
Lead bidding efforts. Negotiate contract terms and manage existing contracts with vendors including manufacturing service agreements, stocking programs, non-disclosure agreements, etc.
Lead initiatives and projects cross-functionally.
Create purchase orders, resolve invoice and receiving snags, and receive/ship orders in ERP/MES.
Required Skills:
Bachelors degree or 6+ years of experience in supply chain function
3+ years of experience working in procurement, operations, or buying function supporting manufacturing
Demonstrated ability to source complex mechanical components and manage multi-tier supply chains
Understanding of engineered part drawings and methods of manufacturing, especially subtractive machining (milling, turning, sheet metal cutting/forming)
Experience in prototype development, new product introduction buying, and high-volume manufacturing
#LI-Onsite
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nWe are seeking a proactive and technically minded Procurement Specialist to join our growing team. You'll collaborate closely with cross-functional teams, primarily our mechanical engineering and machining teams to source and procure custom mechanical parts and raw materials. This position offers the opportunity to lead key initiatives that strengthen our supply chain and vendor partnerships. This is an onsite role that reports directly to the Manager of Sourcing and Procurement at our Everett, WA office.\n\nYou Will\n\n - Source raw material (aluminum, stainless steel, copper, G10, HDPE, etc) in various form factors (bar, plate, sheet, tubing, etc), CNC cutting tools (mills, drills, reamers, inserts, etc), and workholding (vises, chucks, fixtures, clamps, etc) as needed to support operations.\n\n - Support in-source/out-source decision making to procure custom mechanical parts in collaboration with engineering and machining teams. Drive BOM cost reductions and secure production capacity to meet production and prototype NPI schedule requirements.\n\n - Identify new vendors and maintain strong relationships with existing vendors to develop a diverse and robust supply chain.\n\n - Lead bidding efforts. Negotiate contract terms and manage existing contracts with vendors including manufacturing service agreements, stocking programs, non-disclosure agreements, etc.\n\n - Lead initiatives and projects cross-functionally.\n\n - Create purchase orders, resolve invoice and receiving snags, and receive/ship orders in ERP/MES.\n\nRequired Skills:\n\n - Bachelors degree or 6+ years of experience in supply chain function\n\n - 3+ years of experience working in procurement, operations, or buying function supporting manufacturing\n\n - Demonstrated ability to source complex mechanical components and manage multi-tier supply chains\n\n - Understanding of engineered part drawings and methods of manufacturing, especially subtractive machining (milling, turning, sheet metal cutting/forming)\n\n - Experience in prototype development, new product introduction buying, and high-volume manufacturing\n\n#LI-Onsite\n\n\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"520b0d15-04e0-4da0-8d27-9b76e879548a","title":"Senior Electrical Simulation Engineer","department":"Electrical Engineering","team":"Electrical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-12-19T19:15:16.858+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/520b0d15-04e0-4da0-8d27-9b76e879548a","applyUrl":"https://jobs.ashbyhq.com/helion/520b0d15-04e0-4da0-8d27-9b76e879548a/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
As a Senior Electrical Simulation Engineer focused on simulation, you will develop and validate detailed circuit and system models that guide design decisions and ensure the safe, stable operation of our fusion systems. You will create plant-level models to assess performance, evaluate subsystem interactions, and verify compliance with applicable standards and regulations. You will collaborate with cross-disciplinary teams to model and simulate the pulsed power devices, circuits, and physics that enable fusion machine operation. By combining hands-on lab work with advanced simulation methods, you'll accelerate our ability to represent complex electrical systems with confidence, ensuring the reliability of the fusion machine at scale. This is an onsite role that reports directly to Lead Electrical Engineer at our Everett, WA office.
You Will:
Lead development and validation of electrical simulation models at the circuit and systems levels
Integrate electrical models with mechanical, thermal, and controls simulations to evaluate multidisciplinary interactions and optimize overall system performance
Develop automation scripts to enable repeatable, automated execution of simulation activities
Work with hardware, firmware, and software engineers to support bring-up, integration and root-cause analysis
Evaluate and deploy new simulation tools and processes improve model fidelity, efficiency, and scalability
Mentor and guide junior engineers in simulation techniques, model validation, and best practices
Required Skills:
Bachelor's degree in Electrical Engineering, Electrical Engineering Technology, Computer Engineering, or related field
8+ years of experience creating system-level simulations in environments such as Simulink to capture dynamic behavior, fault response and control interactions
Experience with controls, power electronics, and energy delivery systems
Experience developing and validating circuit-level electrical models using tools such as SPICE, Simetrix/Simplis, PLECS, or PSIM
Experience with leading the design and execution of test campaigns to validate and refine simulation models through experimental measurement
Experience with Python, MATLAB, or similar scripting languages for automation, data analysis, report generation, and workflow integration
Troubleshooting and problem-solving skills with attention to detail in model validation and documentation
Collaborate closely with cross-disciplinary engineering teams
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nAs a Senior Electrical Simulation Engineer focused on simulation, you will develop and validate detailed circuit and system models that guide design decisions and ensure the safe, stable operation of our fusion systems. You will create plant-level models to assess performance, evaluate subsystem interactions, and verify compliance with applicable standards and regulations. You will collaborate with cross-disciplinary teams to model and simulate the pulsed power devices, circuits, and physics that enable fusion machine operation. By combining hands-on lab work with advanced simulation methods, you'll accelerate our ability to represent complex electrical systems with confidence, ensuring the reliability of the fusion machine at scale. This is an onsite role that reports directly to Lead Electrical Engineer at our Everett, WA office. \n\nYou Will:\n\n - Lead development and validation of electrical simulation models at the circuit and systems levels\n\n - Integrate electrical models with mechanical, thermal, and controls simulations to evaluate multidisciplinary interactions and optimize overall system performance\n\n - Develop automation scripts to enable repeatable, automated execution of simulation activities\n\n - Work with hardware, firmware, and software engineers to support bring-up, integration and root-cause analysis\n\n - Evaluate and deploy new simulation tools and processes improve model fidelity, efficiency, and scalability\n\n - Mentor and guide junior engineers in simulation techniques, model validation, and best practices\n\nRequired Skills:\n\n - Bachelor's degree in Electrical Engineering, Electrical Engineering Technology, Computer Engineering, or related field\n\n - 8+ years of experience creating system-level simulations in environments such as Simulink to capture dynamic behavior, fault response and control interactions\n\n - Experience with controls, power electronics, and energy delivery systems\n\n - Experience developing and validating circuit-level electrical models using tools such as SPICE, Simetrix/Simplis, PLECS, or PSIM\n\n - Experience with leading the design and execution of test campaigns to validate and refine simulation models through experimental measurement\n\n - Experience with Python, MATLAB, or similar scripting languages for automation, data analysis, report generation, and workflow integration\n\n - Troubleshooting and problem-solving skills with attention to detail in model validation and documentation\n\n - Collaborate closely with cross-disciplinary engineering teams\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"52fade3b-17d1-47e7-97b5-ff76524ffe95","title":"Director of Fusion Plant Operations","department":"Research & Development ","team":"Research & Development ","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-05-20T19:34:42.026+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/52fade3b-17d1-47e7-97b5-ff76524ffe95","applyUrl":"https://jobs.ashbyhq.com/helion/52fade3b-17d1-47e7-97b5-ff76524ffe95/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
This role carries a dual mandate: accelerating the development of Helion's fusion technology and building the Deployment organization that will operate the world's first commercial fusion power plants.
Today, that means leading innovation across our fusion test platforms, subscale integrated devices, vacuum testing, circuit development, and other research projects required to meet our goal of delivering fusion energy to the grid by 2028.
In this critical leadership role, you will define and drive the pace at which Helion builds, tests, and learns from each generation of fusion technology. Building the teams, processes, training, culture and standards of excellence required to deploy, commission, test, and operate commercial scale, integrated fusion power plants, your work will directly accelerate our ability to deliver affordable, clean electricity to the world.
This position sits at the intersection of science, engineering, and operations, and reports directly to the CEO.
You Will:
Develop the Deployment team: build the team, training, and processes that will form the backbone for the operators of the world's first fusion power plants
Define long-term strategy: develop a strategic roadmap for future machine commissioning and testing capabilities. Define a pathway to delivering operating fusion power plants, including the operational infrastructure, training, and safety
Accelerate fusion development: set the standard for rapid iteration and data-driven development of Helion's fusion generations and plasma systems
Lead and grow a world-class team: manage a cross-disciplinary team of experimental scientists and engineers focused on fast paced experimentation
Shape operation campaigns: partner with Helion's Science and Engineering teams to execute high-impact experimental programs in plasma physics and generator operations. Overseeing the team responsible for implementing several multimillion-dollar research and engineering project simultaneously
Drive cross-functional alignment and knowledge sharing across Operations, Engineering, Production, and Research to enable data-informed design decisions for future generations of fusion machines
Required Skills:
Master's degree in engineering or physics
10+ years of experience in R&D and operational leadership within engineering environments
7+ years managing large, technically challenging programs with full schedule and resource ownership
5+ years of experience managing technical teams, including managing managers
Experience commissioning large-scale, complex machines
Demonstrated ability to apply first principles thinking and analytical rigor to solve engineering and scientific challenges
Cross-functional leadership and collaboration skills with experience guiding diverse technical teams
#LI-Onsite
#LI-TM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\nWhat You Will Be Doing:\n\nThis role carries a dual mandate: accelerating the development of Helion's fusion technology and building the Deployment organization that will operate the world's first commercial fusion power plants.\n\nToday, that means leading innovation across our fusion test platforms, subscale integrated devices, vacuum testing, circuit development, and other research projects required to meet our goal of delivering fusion energy to the grid by 2028.\n\nIn this critical leadership role, you will define and drive the pace at which Helion builds, tests, and learns from each generation of fusion technology. Building the teams, processes, training, culture and standards of excellence required to deploy, commission, test, and operate commercial scale, integrated fusion power plants, your work will directly accelerate our ability to deliver affordable, clean electricity to the world.\n\nThis position sits at the intersection of science, engineering, and operations, and reports directly to the CEO. \n\n\n\nYou Will:\n\n - Develop the Deployment team: build the team, training, and processes that will form the backbone for the operators of the world's first fusion power plants\n\n - Define long-term strategy: develop a strategic roadmap for future machine commissioning and testing capabilities. Define a pathway to delivering operating fusion power plants, including the operational infrastructure, training, and safety\n\n - Accelerate fusion development: set the standard for rapid iteration and data-driven development of Helion's fusion generations and plasma systems\n\n - Lead and grow a world-class team: manage a cross-disciplinary team of experimental scientists and engineers focused on fast paced experimentation\n\n - Shape operation campaigns: partner with Helion's Science and Engineering teams to execute high-impact experimental programs in plasma physics and generator operations. Overseeing the team responsible for implementing several multimillion-dollar research and engineering project simultaneously\n\n - Drive cross-functional alignment and knowledge sharing across Operations, Engineering, Production, and Research to enable data-informed design decisions for future generations of fusion machines\n\n\n\nRequired Skills:\n\n - Master's degree in engineering or physics\n\n - 10+ years of experience in R&D and operational leadership within engineering environments\n\n - 7+ years managing large, technically challenging programs with full schedule and resource ownership\n\n - 5+ years of experience managing technical teams, including managing managers\n\n - Experience commissioning large-scale, complex machines \n\n - Demonstrated ability to apply first principles thinking and analytical rigor to solve engineering and scientific challenges\n\n - Cross-functional leadership and collaboration skills with experience guiding diverse technical teams\n\n#LI-Onsite\n\n#LI-TM1 \n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"546d8e0e-e57a-4866-bec8-6c3a0a2c7ef4","title":"Principal Experimental Scientist - RF","department":"Science","team":"Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-05-06T15:29:01.527+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/546d8e0e-e57a-4866-bec8-6c3a0a2c7ef4","applyUrl":"https://jobs.ashbyhq.com/helion/546d8e0e-e57a-4866-bec8-6c3a0a2c7ef4/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
Helion is hiring a Principal Experimental Scientist to lead the development of our RF pre-ionization capability for Helion’s fusion generators. In this role, you will own the strategy, technical direction, and execution of RF plasma source development for our FRC system, translating plasma physics goals into robust experimental hardware and operational capability. You will develop, optimize, and validate high-performance RF systems to achieve target plasma density, stability, and coupling efficiency, while defining the diagnostic and experimental approach needed to measure and improve performance. As a principal-level scientist, you will integrate cross-functional input from plasma physics, controls, machine operations, electrical engineering, and data science to mature RF pre-ionization from experimental concept into reliable platform capability. You will also help establish Helion’s long-term technical roadmap and internal best practices for RF-driven plasma startup and next-generation machine development. This is an onsite role reporting directly to our Director of Plasma and Nuclear Science in Everett, WA.
You Will:
Own the end-to-end technical development of Helion’s RF pre-ionization capability for FRC startup, including concept development, experimental design, execution, validation, and performance improvement
Lead hands-on experimental work spanning RF hardware, antenna and coupling design, plasma diagnostics, and operational procedures to deliver repeatable plasma startup performance
Develop and optimize high-performance RF plasma source systems to achieve targeted plasma density, stability, and coupling efficiency
Define and deploy the diagnostic strategy needed to characterize RF-driven plasma formation, coupling behavior, and startup performance, ensuring high-fidelity data and actionable insight
Integrate cross-disciplinary technical input across plasma physics, machine operations, controls, electrical engineering, and data science to align RF development with Helion’s machine roadmap
Partner with technical leadership on strategic planning, long-range roadmap development, and identification of new RF/plasma startup concepts for future Helion systems
Required Skills:
Ph.D. in physics, plasma physics, electrical engineering, aerospace engineering, or a related discipline with strong relevance to RF plasma systems, plasma sources, or fusion experimentation
10+ years of experience in advanced laboratory or R&D environments, including substantial hands-on work with plasma generation systems, RF hardware, vacuum systems, and experimental campaign execution
Deep expertise in RF plasma source development, antenna/coupling design, RF-plasma interactions, or related high-energy plasma hardware
Strong background in plasma diagnostics and data interpretation, with experience using measurement systems to evaluate plasma parameters such as density, temperature, stability, coupling, and current behavior
Demonstrated track record of independently leading complex experimental programs from concept through validation, including cross-functional technical coordination and translation of results into system improvements
Recognized subject matter expertise in one or more areas relevant to RF-assisted plasma startup, pre-ionization physics, experimental plasma systems, or fusion-enabling hardware
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\nWhat You Will Be Doing:\nHelion is hiring a Principal Experimental Scientist to lead the development of our RF pre-ionization capability for Helion’s fusion generators. In this role, you will own the strategy, technical direction, and execution of RF plasma source development for our FRC system, translating plasma physics goals into robust experimental hardware and operational capability. You will develop, optimize, and validate high-performance RF systems to achieve target plasma density, stability, and coupling efficiency, while defining the diagnostic and experimental approach needed to measure and improve performance. As a principal-level scientist, you will integrate cross-functional input from plasma physics, controls, machine operations, electrical engineering, and data science to mature RF pre-ionization from experimental concept into reliable platform capability. You will also help establish Helion’s long-term technical roadmap and internal best practices for RF-driven plasma startup and next-generation machine development. This is an onsite role reporting directly to our Director of Plasma and Nuclear Science in Everett, WA.\n\nYou Will:\n\n - Own the end-to-end technical development of Helion’s RF pre-ionization capability for FRC startup, including concept development, experimental design, execution, validation, and performance improvement\n\n - Lead hands-on experimental work spanning RF hardware, antenna and coupling design, plasma diagnostics, and operational procedures to deliver repeatable plasma startup performance\n\n - Develop and optimize high-performance RF plasma source systems to achieve targeted plasma density, stability, and coupling efficiency\n\n - Define and deploy the diagnostic strategy needed to characterize RF-driven plasma formation, coupling behavior, and startup performance, ensuring high-fidelity data and actionable insight\n\n - Integrate cross-disciplinary technical input across plasma physics, machine operations, controls, electrical engineering, and data science to align RF development with Helion’s machine roadmap\n\n - Partner with technical leadership on strategic planning, long-range roadmap development, and identification of new RF/plasma startup concepts for future Helion systems\n\n\n\nRequired Skills:\n\n - Ph.D. in physics, plasma physics, electrical engineering, aerospace engineering, or a related discipline with strong relevance to RF plasma systems, plasma sources, or fusion experimentation\n\n - 10+ years of experience in advanced laboratory or R&D environments, including substantial hands-on work with plasma generation systems, RF hardware, vacuum systems, and experimental campaign execution\n\n - Deep expertise in RF plasma source development, antenna/coupling design, RF-plasma interactions, or related high-energy plasma hardware\n\n - Strong background in plasma diagnostics and data interpretation, with experience using measurement systems to evaluate plasma parameters such as density, temperature, stability, coupling, and current behavior\n\n - Demonstrated track record of independently leading complex experimental programs from concept through validation, including cross-functional technical coordination and translation of results into system improvements\n\n - Recognized subject matter expertise in one or more areas relevant to RF-assisted plasma startup, pre-ionization physics, experimental plasma systems, or fusion-enabling hardware\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"54718170-4ad0-4b47-ab96-4dddedb1beb8","title":"High Voltage Test Technician ","department":"Production","team":"Production","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-05-27T18:15:15.458+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/54718170-4ad0-4b47-ab96-4dddedb1beb8","applyUrl":"https://jobs.ashbyhq.com/helion/54718170-4ad0-4b47-ab96-4dddedb1beb8/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will perform high-voltage testing of production assemblies, subsystems, and components critical to Helion's fusion generators. You will implement and troubleshoot test setups, ensuring safety, quality, and throughput targets are met. You will work closely with Design Engineers, Test Engineers, and Production Technicians to validate system performance, identify issues, and continuously improve test execution. This is an onsite role that reports directly to the Production Manager at our Everett, WA office.
You Will:
Set up, configure, and execute high-voltage tests on production assemblies and prototypes
Troubleshoot electrical and mechanical issues during testing and document findings
Operate test equipment, control panels, and data acquisition systems according to defined procedures
Follow high-voltage safety protocols and maintain compliance with defined high-voltage handling and grounding standards
Collaborate with Design and Test Engineers to review test results and escalate issues or anomalies
Support the repair, development, maintenance, and calibration of test fixtures and related equipment
Record and report test data accurately, participating in post-test reviews and process improvements
Occasionally assist with prototype or experimental testing
Required Skills:
3–5 years of experience in electronics or manufacturing test environments
Familiarity with electrical systems and high-voltage safety practices
Proven ability to execute detailed test procedures safely and efficiently
Hands-on experience in test setup, troubleshooting, and use of electrical measurement tools
#LI-Onsite
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will perform high-voltage testing of production assemblies, subsystems, and components critical to Helion's fusion generators. You will implement and troubleshoot test setups, ensuring safety, quality, and throughput targets are met. You will work closely with Design Engineers, Test Engineers, and Production Technicians to validate system performance, identify issues, and continuously improve test execution. This is an onsite role that reports directly to the Production Manager at our Everett, WA office.\n\nYou Will:\n\n - Set up, configure, and execute high-voltage tests on production assemblies and prototypes\n\n - Troubleshoot electrical and mechanical issues during testing and document findings\n\n - Operate test equipment, control panels, and data acquisition systems according to defined procedures\n\n - Follow high-voltage safety protocols and maintain compliance with defined high-voltage handling and grounding standards\n\n - Collaborate with Design and Test Engineers to review test results and escalate issues or anomalies\n\n - Support the repair, development, maintenance, and calibration of test fixtures and related equipment\n\n - Record and report test data accurately, participating in post-test reviews and process improvements\n\n - Occasionally assist with prototype or experimental testing\n\nRequired Skills:\n\n - 3–5 years of experience in electronics or manufacturing test environments\n\n - Familiarity with electrical systems and high-voltage safety practices\n\n - Proven ability to execute detailed test procedures safely and efficiently\n\n - Hands-on experience in test setup, troubleshooting, and use of electrical measurement tools\n\n#LI-Onsite \n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"5c546f3f-4db4-4f9b-80d4-d2b4e55314ba","title":"Senior Superconductor Engineer","department":"Science","team":"Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-05-12T16:05:44.704+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/5c546f3f-4db4-4f9b-80d4-d2b4e55314ba","applyUrl":"https://jobs.ashbyhq.com/helion/5c546f3f-4db4-4f9b-80d4-d2b4e55314ba/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will own the full lifecycle of superconducting hardware—from simulation and design through build, test, and integration—while coordinating across internal teams and external partners to qualify technologies for deployment in Helion's fusion machines. You will report to the Senior Director of Science and this is an onsite role located at our Everett, WA office.
You Will:
Analyze magnetic fields and their coupled effects (e.g., Lorentz forces, thermal loads, structural stress) using tools such as COMSOL and ANSYS
Evaluate mechanical loading and failure modes in high-field superconducting environments
Design, build, test, and iterate superconducting magnet systems in both standalone test stands and integrated fusion machines
Develop experimental plans and diagnostics to validate performance under realistic operating conditions
Analyze the impact of superconducting field configurations and architectures on plasma performance
Collaborate closely with plasma physicists and machine designers to optimize system-level outcomes
Required Skills:
Demonstrated experience delivering a functional superconducting system that has been successfully deployed or operated in a real-world application
Strong background in electromagnetics, superconductivity, and multiphysics modeling
Hands-on experience designing and testing superconducting magnets or related systems
Proficiency with COMSOL, ANSYS, or equivalent simulation tools
Experience working across disciplines including mechanical, electrical, and plasma physics domains
Proven ability to independently drive complex technical projects from concept to execution
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will own the full lifecycle of superconducting hardware—from simulation and design through build, test, and integration—while coordinating across internal teams and external partners to qualify technologies for deployment in Helion's fusion machines. You will report to the Senior Director of Science and this is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Analyze magnetic fields and their coupled effects (e.g., Lorentz forces, thermal loads, structural stress) using tools such as COMSOL and ANSYS\n\n - Evaluate mechanical loading and failure modes in high-field superconducting environments\n\n - Design, build, test, and iterate superconducting magnet systems in both standalone test stands and integrated fusion machines\n\n - Develop experimental plans and diagnostics to validate performance under realistic operating conditions\n\n - Analyze the impact of superconducting field configurations and architectures on plasma performance\n\n - Collaborate closely with plasma physicists and machine designers to optimize system-level outcomes\n\nRequired Skills:\n\n - Demonstrated experience delivering a functional superconducting system that has been successfully deployed or operated in a real-world application\n\n - Strong background in electromagnetics, superconductivity, and multiphysics modeling\n\n - Hands-on experience designing and testing superconducting magnets or related systems\n\n - Proficiency with COMSOL, ANSYS, or equivalent simulation tools\n\n - Experience working across disciplines including mechanical, electrical, and plasma physics domains\n\n - Proven ability to independently drive complex technical projects from concept to execution\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"691cb280-44e4-449b-9734-c8b3633611d3","title":"Senior Power Electronics Engineer","department":"Electrical Engineering","team":"Electrical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2024-12-19T22:46:50.487+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/691cb280-44e4-449b-9734-c8b3633611d3","applyUrl":"https://jobs.ashbyhq.com/helion/691cb280-44e4-449b-9734-c8b3633611d3/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will support the design, development, and optimization of the core energy management systems for Helion’s fusion generators. This includes high-voltage pulsed power delivery, energy recovery, redistribution networks, and AC grid-tie systems. In this role, you’ll drive design excellence, mentor other engineers, and contribute directly to one of the most ambitious energy challenges of our time. This is an onsite role reporting to the Senior Manager of Electrical Engineering at our Everett, WA office.
You Will:
Design, test, and troubleshoot high-voltage power systems that drive pulsed magnetic coils
Oversee procurement, construction, and commissioning of electrical systems delivering <1 ms pulses at up to 5 MA and 40 kV
Develop system architecture and collaborate on schematics and installation drawings
Lead design reviews, validating cost-effective, scalable, and reliable solutions
Support generator commissioning and operations with an eye toward improving future builds
Own engineering rigor—cost, schedule, and resource estimates—for your scope of work
Mentor teammates and contribute to technical growth across electrical and cross-functional engineering teams
Required Skills:
8+ years experience in power electronics, solving complex electrical engineering problems from design to delivery
Bachelor’s or Master’s degree in Electrical Engineering, Physics, or related field
Proven experience designing, fabricating, installing, and testing electronic systems
Strong working knowledge of power switching components (IGBTs, MOSFETs, SCRs)
Deep understanding of engineering principles and experience driving project delivery from design through execution
Advanced troubleshooting skills using tools like oscilloscopes, pulse generators, spectrum analyzers, and electronic loads
Proficiency in LTSpice, SIMetrix/SIMPLIS, Altium, MATLAB, and Microsoft Office
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will support the design, development, and optimization of the core energy management systems for Helion’s fusion generators. This includes high-voltage pulsed power delivery, energy recovery, redistribution networks, and AC grid-tie systems. In this role, you’ll drive design excellence, mentor other engineers, and contribute directly to one of the most ambitious energy challenges of our time. This is an onsite role reporting to the Senior Manager of Electrical Engineering at our Everett, WA office.\n\nYou Will:\n\n - Design, test, and troubleshoot high-voltage power systems that drive pulsed magnetic coils\n\n - Oversee procurement, construction, and commissioning of electrical systems delivering <1 ms pulses at up to 5 MA and 40 kV\n\n - Develop system architecture and collaborate on schematics and installation drawings\n\n - Lead design reviews, validating cost-effective, scalable, and reliable solutions\n\n - Support generator commissioning and operations with an eye toward improving future builds\n\n - Own engineering rigor—cost, schedule, and resource estimates—for your scope of work\n\n - Mentor teammates and contribute to technical growth across electrical and cross-functional engineering teams\n\nRequired Skills:\n\n - 8+ years experience in power electronics, solving complex electrical engineering problems from design to delivery\n\n - Bachelor’s or Master’s degree in Electrical Engineering, Physics, or related field\n\n - Proven experience designing, fabricating, installing, and testing electronic systems\n\n - Strong working knowledge of power switching components (IGBTs, MOSFETs, SCRs)\n\n - Deep understanding of engineering principles and experience driving project delivery from design through execution\n\n - Advanced troubleshooting skills using tools like oscilloscopes, pulse generators, spectrum analyzers, and electronic loads\n\n - Proficiency in LTSpice, SIMetrix/SIMPLIS, Altium, MATLAB, and Microsoft Office\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"6a2e2e50-692e-4696-a986-f0ab14d5eda1","title":"Senior Financial Analyst","department":"Finance","team":"Finance","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-03-30T18:42:01.477+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/6a2e2e50-692e-4696-a986-f0ab14d5eda1","applyUrl":"https://jobs.ashbyhq.com/helion/6a2e2e50-692e-4696-a986-f0ab14d5eda1/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Do:
You will be a critical member of the Finance team, providing analytical and reporting support for the Financial Planning & Analysis team (FP&A). You'll work with the Finance and Accounting teams and other key business stakeholders across Demand & Supply Planning, Procurement, and Inventory on day-to-day financial reporting, forecasting, and delivering of accurate analysis to support decision-making for the Integrated Supply Chain (ISC) organization. This is an onsite role that reports directly to the Finance Director of FP&A at our Everett, WA office.
You Will:
Develop and enhance demand and procurement reporting tools, dashboards, and financial analyses to deliver actionable insights and communicate the financial forecast trends.
Maintain and update budgets, business inputs, and manufacturing forecasting models.
Conduct targeted financial and operational analyses to guide cost management and project decision making.
Interact with key stakeholders across Procurement and Manufacturing teams to understand business drivers, measure key output KPI metrics, and improve/implement financial reporting for a dynamic business.
Use Excel, ERP systems (NetSuite or Fusion preferred), and BI and AI Finance tools (e.g., Power BI, Tableau, ChatGPT, CoPilot, Cohere, etc.) to improve reporting and automate workflows.
Required Skills:
4–6 years of experience in FP&A, financial analysis, or accounting within the technology, robotics, energy, or manufacturing industries.
Experience with financial statements, budgeting, cost tracking, rebates, unit costing, and economic ordering models, with the ability to bridge PQV and PPV production variances and forecasting inventory.
Advanced Excel skills with a strong ability to leverage large data sets; experience with SQL or other database query tools would be a plus.
Proficiency with BI tools (e.g. Power BI, Tableau) and practical application of AI tools (e.g. ChatGPT, Copilot, Cohere) for financial work.
Ability to distill financial analyses into clear insights and effectively communicate findings to both finance and non-finance stakeholders.
Bachelor’s degree in Finance, Economics, Business, or related field.
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Do:\n\nYou will be a critical member of the Finance team, providing analytical and reporting support for the Financial Planning & Analysis team (FP&A). You'll work with the Finance and Accounting teams and other key business stakeholders across Demand & Supply Planning, Procurement, and Inventory on day-to-day financial reporting, forecasting, and delivering of accurate analysis to support decision-making for the Integrated Supply Chain (ISC) organization. This is an onsite role that reports directly to the Finance Director of FP&A at our Everett, WA office.\n\nYou Will:\n\n - Develop and enhance demand and procurement reporting tools, dashboards, and financial analyses to deliver actionable insights and communicate the financial forecast trends.\n\n - Maintain and update budgets, business inputs, and manufacturing forecasting models.\n\n - Conduct targeted financial and operational analyses to guide cost management and project decision making.\n\n - Interact with key stakeholders across Procurement and Manufacturing teams to understand business drivers, measure key output KPI metrics, and improve/implement financial reporting for a dynamic business.\n\n - Use Excel, ERP systems (NetSuite or Fusion preferred), and BI and AI Finance tools (e.g., Power BI, Tableau, ChatGPT, CoPilot, Cohere, etc.) to improve reporting and automate workflows.\n\nRequired Skills:\n\n - 4–6 years of experience in FP&A, financial analysis, or accounting within the technology, robotics, energy, or manufacturing industries.\n\n - Experience with financial statements, budgeting, cost tracking, rebates, unit costing, and economic ordering models, with the ability to bridge PQV and PPV production variances and forecasting inventory.\n\n - Advanced Excel skills with a strong ability to leverage large data sets; experience with SQL or other database query tools would be a plus.\n\n - Proficiency with BI tools (e.g. Power BI, Tableau) and practical application of AI tools (e.g. ChatGPT, Copilot, Cohere) for financial work.\n\n - Ability to distill financial analyses into clear insights and effectively communicate findings to both finance and non-finance stakeholders.\n\n - Bachelor’s degree in Finance, Economics, Business, or related field.\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"708c511b-b1cc-4828-9b28-c84f21865db2","title":"Senior Mechanical Engineer, Fluids","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-17T23:37:01.166+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/708c511b-b1cc-4828-9b28-c84f21865db2","applyUrl":"https://jobs.ashbyhq.com/helion/708c511b-b1cc-4828-9b28-c84f21865db2/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will own hardware designs for systems related to fluid systems on Helion's fusion generators. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. You will report to the Senior Manager of Engineering, and this is an onsite role located at our Everett, WA office.
You Will:
Own and understand designs related to fluids, thermal, and structural subsystems – and improve their requirements.
Learn from historical engineering approaches, design novel hardware, and test your solutions
Design fusion hardware within 3D CAD software (e.g. NX)
Perform analysis with in-house and out-of-house tools (e.g. ANSYS Fluent) and hold design reviews to gather feedback and iterate to a fully functioning system
Learn from experts to expand your engineering skillset and domain knowledge
Work hands-on alongside experienced technicians to implement your hardware designs
Troubleshoot hardware issues as they arise on integrated fusion generators
Required Skills:
Bachelor's degree in engineering
7+ years of professional experience delivering on full-scope engineering projects (including schedule ownership)
Experience applying engineering first-principles and method-based thinking to challenging problems
Hands-on exposure to a variety of engineering disciplines (fluids, mechanical, thermal)
Advanced experience with CAD software (e.g. NX, Solidworks)
#LI-Onsite, #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will own hardware designs for systems related to fluid systems on Helion's fusion generators. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. You will report to the Senior Manager of Engineering, and this is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Own and understand designs related to fluids, thermal, and structural subsystems – and improve their requirements.\n\n - Learn from historical engineering approaches, design novel hardware, and test your solutions\n\n - Design fusion hardware within 3D CAD software (e.g. NX)\n\n - Perform analysis with in-house and out-of-house tools (e.g. ANSYS Fluent) and hold design reviews to gather feedback and iterate to a fully functioning system\n\n - Learn from experts to expand your engineering skillset and domain knowledge\n\n - Work hands-on alongside experienced technicians to implement your hardware designs\n\n - Troubleshoot hardware issues as they arise on integrated fusion generators\n\nRequired Skills:\n\n - Bachelor's degree in engineering\n\n - 7+ years of professional experience delivering on full-scope engineering projects (including schedule ownership)\n\n - Experience applying engineering first-principles and method-based thinking to challenging problems\n\n - Hands-on exposure to a variety of engineering disciplines (fluids, mechanical, thermal)\n\n - Advanced experience with CAD software (e.g. NX, Solidworks)\n\n#LI-Onsite, #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"71eb8e1f-c424-4671-9b8d-d9ce81887c37","title":"Senior Electrical Engineer, Hardware in the Loop","department":"Electrical Engineering","team":"Electrical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-02-25T20:01:16.318+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/71eb8e1f-c424-4671-9b8d-d9ce81887c37","applyUrl":"https://jobs.ashbyhq.com/helion/71eb8e1f-c424-4671-9b8d-d9ce81887c37/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
As an Senior Electrical Engineer focused on Hardware-in-the-Loop (HIL), you will design, build, and automate test platforms that allow us to validate our hardware, firmware, and software together in realistic, integrated environments. You’ll work across disciplines to create regression tests that exercise real hardware through power supplies, function generators, source meters, and other lab equipment—catching integration issues before they reach the machine. You’ll own the development of HIL testbeds and infrastructure, enabling system-level acceptance and qualification campaigns. By combining hands-on lab work with automation and data analysis, you’ll accelerate our ability to test complex electrical systems with confidence and repeatability, ensuring the reliability of the fusion machine at scale. You will report to the Manager of Electrical Engineering and this is an onsite role located at our Everett, WA office.
You Will:
Design, build, and maintain Hardware-in-the-Loop (HIL) testbeds and supporting infrastructure.
Automate hardware test systems to support regression testing of integrated electrical hardware.
Control and automate lab equipment (power supplies, function generators, source meters, oscilloscopes).
Develop test scripts and frameworks to enable repeatable, automated execution of test campaigns.
Work closely with hardware, firmware, and software engineers to define test requirements and integrate HIL setups into development workflows.
Run acceptance and qualification test campaigns at an integrated system level.
Troubleshoot and debug across hardware, software, and test automation boundaries.
Document testbed architectures, test procedures, and results for traceability and knowledge sharing.
Required Skills:
Bachelor’s degree in Electrical Engineering, Electrical Engineering Technology, Computer Engineering, or related field.
Strong programming experience in Python, including test automation frameworks.
Experience using PyVISA or similar libraries to control lab instrumentation.
Hands-on experience with lab equipment: power supplies, function generators, oscilloscopes, source meters, etc.
Familiarity with unit testing frameworks and automated regression testing.
Linux experience for development, scripting, and test environment management.
Strong troubleshooting and problem-solving skills across hardware/software boundaries.
Ability to collaborate closely with cross-disciplinary engineering teams.
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nAs an Senior Electrical Engineer focused on Hardware-in-the-Loop (HIL), you will design, build, and automate test platforms that allow us to validate our hardware, firmware, and software together in realistic, integrated environments. You’ll work across disciplines to create regression tests that exercise real hardware through power supplies, function generators, source meters, and other lab equipment—catching integration issues before they reach the machine. You’ll own the development of HIL testbeds and infrastructure, enabling system-level acceptance and qualification campaigns. By combining hands-on lab work with automation and data analysis, you’ll accelerate our ability to test complex electrical systems with confidence and repeatability, ensuring the reliability of the fusion machine at scale. You will report to the Manager of Electrical Engineering and this is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n \n\n - Design, build, and maintain Hardware-in-the-Loop (HIL) testbeds and supporting infrastructure.\n\n - Automate hardware test systems to support regression testing of integrated electrical hardware.\n\n - Control and automate lab equipment (power supplies, function generators, source meters, oscilloscopes).\n\n - Develop test scripts and frameworks to enable repeatable, automated execution of test campaigns.\n\n - Work closely with hardware, firmware, and software engineers to define test requirements and integrate HIL setups into development workflows.\n\n - Run acceptance and qualification test campaigns at an integrated system level.\n\n - Troubleshoot and debug across hardware, software, and test automation boundaries.\n\n - Document testbed architectures, test procedures, and results for traceability and knowledge sharing.\n\n \n\nRequired Skills:\n\n \n\n - Bachelor’s degree in Electrical Engineering, Electrical Engineering Technology, Computer Engineering, or related field.\n\n - Strong programming experience in Python, including test automation frameworks.\n\n - Experience using PyVISA or similar libraries to control lab instrumentation.\n\n - Hands-on experience with lab equipment: power supplies, function generators, oscilloscopes, source meters, etc.\n\n - Familiarity with unit testing frameworks and automated regression testing.\n\n - Linux experience for development, scripting, and test environment management.\n\n - Strong troubleshooting and problem-solving skills across hardware/software boundaries.\n\n - Ability to collaborate closely with cross-disciplinary engineering teams.\n\n \n\n#LI-Onsite #LI-KL1\n\n \n\n \n\n \n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"747a593f-ec17-4a7b-a715-9416cfb40e46","title":"System Security Administrator","department":"Information Security & Technology ","team":"Information Security & Technology ","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-05-19T20:45:56.634+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/747a593f-ec17-4a7b-a715-9416cfb40e46","applyUrl":"https://jobs.ashbyhq.com/helion/747a593f-ec17-4a7b-a715-9416cfb40e46/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
In this role, you will work within a small team to maintain, update, and manage our system software and hardware. You’ll communicate with teams and users of varying levels of technical knowledge to diagnose and resolve problems patiently and efficiently. This role is responsible for setting up and maintaining a system or specific components of a system including installing, configuring, and updating hardware and software; establishing and managing user accounts; overseeing or conducting backup and recovery tasks; implementing operational and technical security controls; and adhering to organizational security policies and procedures.
You Will:
Manage Windows\\Linux Servers and Microsoft 365 Administration - Ensure performance and availability across all Microsoft 365 services, implement and manage Group Policies and Active Directory administration, Support and optimize virtualization technologies, and perform server and updates to ensure stability and security
Ensure Security, Governance, and Regulatory Compliance - Harden environments and implement security best practices and compliance guidelines by implementing conditional access policies, DLP, RBAC, MFA, and email security protections. Conduct regular system audits to monitor adherence to security policies, validate security controls, mitigate vulnerabilities, and increase operational efficiency. Support incident response efforts related to system security, email security, and cloud identity threats
Endpoint & Patch Management - Manage OS deployments, application packaging, patch management, and lifecycle automation. Manage and troubleshoot patch management solutions for synchronization and identity federation. Develop and maintain scripts and tools for managing configurations, monitoring, and software deployment across endpoints.
Build Infrastructure Monitoring & Automation - scale and improve monitoring solutions to track system availability, resource utilization, and security compliance. Develop PowerShell scripts and automation tools to improve efficiency, reduce manual tasks, and enforce consistency. Use RMM (Remote Monitoring & Management) tools for system performance tracking, endpoint monitoring, and reporting
Collaborate Cross-functionally – work closely with teams across the business to ensure performance, provide technical leadership and mentoring to IT support staff, participate in on-call rotations and respond to emergency system incidents, and assist with managing and supporting workloads in Azure and AWS as needed
Required Qualifications:
5+ years of experience in Windows Server administration, Office 365/Entra ID management, and infrastructure automation including experience with active Directory (on-prem and Entra ID), Group Policy, and Windows Server hardening
PowerShell scripting experience for system automation, including automating Windows Server, Office 365, and Entra ID tasks
Experience with RMM tools for infrastructure monitoring, patch management, and endpoint management
Experience in Linux Administration
Knowledge of virtualization technologies (VMware, Hyper-V, or equivalent) and system monitoring tools (e.g., SolarWinds, PRTG, Nagios, or similar)
Strong troubleshooting skills, a proactive approach to problem-solving, and ability to manage multiple tasks effectively in a fast-paced environment
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\nWhat You Will Be Doing:\n\nIn this role, you will work within a small team to maintain, update, and manage our system software and hardware. You’ll communicate with teams and users of varying levels of technical knowledge to diagnose and resolve problems patiently and efficiently. This role is responsible for setting up and maintaining a system or specific components of a system including installing, configuring, and updating hardware and software; establishing and managing user accounts; overseeing or conducting backup and recovery tasks; implementing operational and technical security controls; and adhering to organizational security policies and procedures.\n\n\n\nYou Will:\n\n - Manage Windows\\Linux Servers and Microsoft 365 Administration - Ensure performance and availability across all Microsoft 365 services, implement and manage Group Policies and Active Directory administration, Support and optimize virtualization technologies, and perform server and updates to ensure stability and security\n\n - Ensure Security, Governance, and Regulatory Compliance - Harden environments and implement security best practices and compliance guidelines by implementing conditional access policies, DLP, RBAC, MFA, and email security protections. Conduct regular system audits to monitor adherence to security policies, validate security controls, mitigate vulnerabilities, and increase operational efficiency. Support incident response efforts related to system security, email security, and cloud identity threats\n\n - Endpoint & Patch Management - Manage OS deployments, application packaging, patch management, and lifecycle automation. Manage and troubleshoot patch management solutions for synchronization and identity federation. Develop and maintain scripts and tools for managing configurations, monitoring, and software deployment across endpoints.\n\n - Build Infrastructure Monitoring & Automation - scale and improve monitoring solutions to track system availability, resource utilization, and security compliance. Develop PowerShell scripts and automation tools to improve efficiency, reduce manual tasks, and enforce consistency. Use RMM (Remote Monitoring & Management) tools for system performance tracking, endpoint monitoring, and reporting\n\n - Collaborate Cross-functionally – work closely with teams across the business to ensure performance, provide technical leadership and mentoring to IT support staff, participate in on-call rotations and respond to emergency system incidents, and assist with managing and supporting workloads in Azure and AWS as needed\n\n\nRequired Qualifications:\n\n - 5+ years of experience in Windows Server administration, Office 365/Entra ID management, and infrastructure automation including experience with active Directory (on-prem and Entra ID), Group Policy, and Windows Server hardening\n\n - PowerShell scripting experience for system automation, including automating Windows Server, Office 365, and Entra ID tasks\n\n - Experience with RMM tools for infrastructure monitoring, patch management, and endpoint management\n\n - Experience in Linux Administration\n\n - Knowledge of virtualization technologies (VMware, Hyper-V, or equivalent) and system monitoring tools (e.g., SolarWinds, PRTG, Nagios, or similar)\n\n - Strong troubleshooting skills, a proactive approach to problem-solving, and ability to manage multiple tasks effectively in a fast-paced environment\n\n\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"76ee70fa-9803-4b21-b87a-4c1168add50b","title":"Senior Engineering Technician, Operations Support","department":"Research & Development ","team":"Research & Development ","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-17T21:09:17.145+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/76ee70fa-9803-4b21-b87a-4c1168add50b","applyUrl":"https://jobs.ashbyhq.com/helion/76ee70fa-9803-4b21-b87a-4c1168add50b/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You’ll work side-by-side with engineers and scientists to turn ideas into prototypes, prototypes into experiments, and experiments into real systems operating on Polaris and the next generation of Helion fusion machines.
This isn’t a routine technician role. It’s a hands-on engineering role for people who like solving hard problems, building first-of-a-kind hardware, and working in a fast-paced R&D environment where each day brings new challenges and opportunities to build, test, and advance the next generation of fusion energy systems.
One day, you might be installing diagnostics or troubleshooting high-voltage pulsed power systems. Next, you could be fabricating a rapid prototype, integrating new instrumentation, or helping reconfigure a test bay to support the next phase of development.
You Will:
Support the operation, maintenance, and ongoing development of Polaris and future generations of Helion fusion systems
Collaborate with a multidisciplinary team to fabricate, assemble, test, troubleshoot, deploy, operate, maintain, and repair complex mechanical, electrical, and electronic systems
Install, align, and maintain high voltage pulsed power systems, including ultra-high vacuum (UHV) and fuel systems
Fabricate one-of-a-kind prototypes, assemblies, fixtures, and instrumentation enclosures, supporting rapid design iterations from engineering concepts
Perform PCB assembly, soldering, rework, and custom cable fabrication
Install and integrate diagnostics, sensors, cameras, and scientific instrumentation used to monitor and support system development
Support upgrades, modifications, and reconfiguration of experimental test bays to enable evolving research and development work
Operate safely at heights using scissor lifts and fall protection systems within Helion facilities
Communicate project progress, technical issues, and system status with engineers and technical owners
Create and maintain technical documentation, build records, and inventory of parts and consumables while maintaining a strong commitment to safety and operational excellence
Support either our 6:00 am to 2:30 pm OR 11:00 am to 7:30 pm work schedule, Monday through Friday at our Everett, WA office
Required Skills:
5+ years of hands-on experience building, integrating, testing, or operating complex electromechanical or experimental hardware systems
Demonstrated ability to develop first-of-a-kind hardware and solve complex technical challenges where solutions are not always immediately obvious
Ability to operate effectively in fast-paced R&D environments where priorities shift and new hardware is continuously being developed and integrated
Experience troubleshooting complex electrical, mechanical, and instrumentation systems in experimental or industrial environments
Strong hands-on fabrication and prototyping skills, including machining, fixture design, mechanical assembly, and rapid hardware iteration
Ability to work safely at heights using ladders, scissor lifts, and fall protection equipment
Proficiency with electrical systems and electronics assembly, including wiring harnesses, cable fabrication, soldering, PCB assembly, and signal routing
Familiarity working with instrumentation and diagnostic systems, including sensors, cameras, and precision measurement equipment
Experience interpreting technical drawings, electrical schematics, and engineering documentation
Strong communication and organizational skills with the ability to maintain build documentation, test records, and technical notes while operating to high standards of safety and quality
Preferred Skills:
Background working with high voltage electrical systems (200V+)
Working knowledge of vacuum systems, including high or ultra-high vacuum environments (<10⁻³ Torr)
Hands-on work with scientific instrumentation and diagnostic systems
Experience supporting experimental test infrastructure or research hardware platforms
Exposure to experimental physics, plasma systems, aerospace systems, or advanced energy technologies
#LI-Onsite #LI-TM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou’ll work side-by-side with engineers and scientists to turn ideas into prototypes, prototypes into experiments, and experiments into real systems operating on Polaris and the next generation of Helion fusion machines.\n\nThis isn’t a routine technician role. It’s a hands-on engineering role for people who like solving hard problems, building first-of-a-kind hardware, and working in a fast-paced R&D environment where each day brings new challenges and opportunities to build, test, and advance the next generation of fusion energy systems.\n\nOne day, you might be installing diagnostics or troubleshooting high-voltage pulsed power systems. Next, you could be fabricating a rapid prototype, integrating new instrumentation, or helping reconfigure a test bay to support the next phase of development.\n\nYou Will:\n\n - Support the operation, maintenance, and ongoing development of Polaris and future generations of Helion fusion systems\n\n - Collaborate with a multidisciplinary team to fabricate, assemble, test, troubleshoot, deploy, operate, maintain, and repair complex mechanical, electrical, and electronic systems\n\n - Install, align, and maintain high voltage pulsed power systems, including ultra-high vacuum (UHV) and fuel systems\n\n - Fabricate one-of-a-kind prototypes, assemblies, fixtures, and instrumentation enclosures, supporting rapid design iterations from engineering concepts\n\n - Perform PCB assembly, soldering, rework, and custom cable fabrication\n\n - Install and integrate diagnostics, sensors, cameras, and scientific instrumentation used to monitor and support system development\n\n - Support upgrades, modifications, and reconfiguration of experimental test bays to enable evolving research and development work\n\n - Operate safely at heights using scissor lifts and fall protection systems within Helion facilities\n\n - Communicate project progress, technical issues, and system status with engineers and technical owners\n\n - Create and maintain technical documentation, build records, and inventory of parts and consumables while maintaining a strong commitment to safety and operational excellence\n\n - Support either our 6:00 am to 2:30 pm OR 11:00 am to 7:30 pm work schedule, Monday through Friday at our Everett, WA office\n\nRequired Skills:\n\n - 5+ years of hands-on experience building, integrating, testing, or operating complex electromechanical or experimental hardware systems\n\n - Demonstrated ability to develop first-of-a-kind hardware and solve complex technical challenges where solutions are not always immediately obvious\n\n - Ability to operate effectively in fast-paced R&D environments where priorities shift and new hardware is continuously being developed and integrated\n\n - Experience troubleshooting complex electrical, mechanical, and instrumentation systems in experimental or industrial environments\n\n - Strong hands-on fabrication and prototyping skills, including machining, fixture design, mechanical assembly, and rapid hardware iteration\n\n - Ability to work safely at heights using ladders, scissor lifts, and fall protection equipment\n\n - Proficiency with electrical systems and electronics assembly, including wiring harnesses, cable fabrication, soldering, PCB assembly, and signal routing\n\n - Familiarity working with instrumentation and diagnostic systems, including sensors, cameras, and precision measurement equipment\n\n - Experience interpreting technical drawings, electrical schematics, and engineering documentation\n\n - Strong communication and organizational skills with the ability to maintain build documentation, test records, and technical notes while operating to high standards of safety and quality\n\nPreferred Skills:\n\n - Background working with high voltage electrical systems (200V+)\n\n - Working knowledge of vacuum systems, including high or ultra-high vacuum environments (<10⁻³ Torr)\n\n - Hands-on work with scientific instrumentation and diagnostic systems\n\n - Experience supporting experimental test infrastructure or research hardware platforms\n\n - Exposure to experimental physics, plasma systems, aerospace systems, or advanced energy technologies\n\n#LI-Onsite #LI-TM1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"77f67235-ec72-4f14-8230-f99ed38a31de","title":"Senior Mechanical Engineer","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-12-19T19:21:41.553+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/77f67235-ec72-4f14-8230-f99ed38a31de","applyUrl":"https://jobs.ashbyhq.com/helion/77f67235-ec72-4f14-8230-f99ed38a31de/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will own hardware designs for Helion's fusion generator prototypes. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. You will report to the Senior Manager of Engineering, and this is an onsite role located at our Everett, WA office.
You Will:
Own and understand subsystem designs such as electromagnetic, structural, fluid, thermal and control systems, and improve their requirements
Learn from historical engineering approaches, design novel hardware, and test your solutions
Design fusion hardware within 3D CAD software (e.g. NX, Solidworks)
Perform analysis with tools like ANSYS and hold design reviews to gather feedback and iterate to a fully functioning system
Learn from experts to expand your engineering skillset and domain knowledge
Work hands-on alongside experienced technicians to implement your hardware designs
Troubleshoot hardware issues as they arise on integrated fusion generators
Required Skills:
Bachelor's degree in engineering
8+ years of professional experience delivering on full-scope engineering projects (including schedule ownership)
Experience applying engineering first-principles and method-based thinking to challenging problems
Hands-on exposure to a variety of engineering disciplines (mechanical, electrical, fluids)
Advanced experience with CAD software (e.g. NX, Solidworks)
Moderate experience with FEA software (e.g. ANSYS, FEMAP)
Moderate experience with GD&T and generating engineering drawings per ASME Y14.5
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will own hardware designs for Helion's fusion generator prototypes. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. You will report to the Senior Manager of Engineering, and this is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Own and understand subsystem designs such as electromagnetic, structural, fluid, thermal and control systems, and improve their requirements\n\n - Learn from historical engineering approaches, design novel hardware, and test your solutions\n\n - Design fusion hardware within 3D CAD software (e.g. NX, Solidworks)\n\n - Perform analysis with tools like ANSYS and hold design reviews to gather feedback and iterate to a fully functioning system\n\n - Learn from experts to expand your engineering skillset and domain knowledge\n\n - Work hands-on alongside experienced technicians to implement your hardware designs\n\n - Troubleshoot hardware issues as they arise on integrated fusion generators\n\nRequired Skills:\n\n - Bachelor's degree in engineering\n\n - 8+ years of professional experience delivering on full-scope engineering projects (including schedule ownership)\n\n - Experience applying engineering first-principles and method-based thinking to challenging problems\n\n - Hands-on exposure to a variety of engineering disciplines (mechanical, electrical, fluids)\n\n - Advanced experience with CAD software (e.g. NX, Solidworks)\n\n - Moderate experience with FEA software (e.g. ANSYS, FEMAP)\n\n - Moderate experience with GD&T and generating engineering drawings per ASME Y14.5\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"7bd14ec3-4563-4b92-a28c-15bc249d0021","title":"Principal Power Electronics Packaging Engineer","department":"Special Projects","team":"Special Projects","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-09T16:42:01.947+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/7bd14ec3-4563-4b92-a28c-15bc249d0021","applyUrl":"https://jobs.ashbyhq.com/helion/7bd14ec3-4563-4b92-a28c-15bc249d0021/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
The switching systems in a commercial fusion generator will need to handle extreme pulsed currents in mass-manufacturable package. We are looking for someone to design what the next generation of packaging looks like, working ahead of where technology currently is and defining what it needs to become.
You Will
Lead development of next-generation thermal management and packaging architectures for high-current switching components
Work across packaging geometry, materials selection, and cooling system design to push the performance ceiling of pulsed power switch assemblies
Collaborate with internal teams and industry partners to accelerate development of packaging solutions
Build test setups to validate thermal and electrical performance under realistic pulsed conditions and use that data to drive iteration
Required Skills
Hands-on experience with power electronics packaging for high-current or high-voltage applications
Strong thermal engineering fundamentals; comfortable with modeling and bench validation
Experience with SCRs, diodes, or similar power semiconductors in demanding environments
Proven experience translating research into tangible hardware and products
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nThe switching systems in a commercial fusion generator will need to handle extreme pulsed currents in mass-manufacturable package. We are looking for someone to design what the next generation of packaging looks like, working ahead of where technology currently is and defining what it needs to become.\n\nYou Will\n\n - Lead development of next-generation thermal management and packaging architectures for high-current switching components\n\n - Work across packaging geometry, materials selection, and cooling system design to push the performance ceiling of pulsed power switch assemblies\n\n - Collaborate with internal teams and industry partners to accelerate development of packaging solutions\n\n - Build test setups to validate thermal and electrical performance under realistic pulsed conditions and use that data to drive iteration\n\nRequired Skills\n\n - Hands-on experience with power electronics packaging for high-current or high-voltage applications\n\n - Strong thermal engineering fundamentals; comfortable with modeling and bench validation\n\n - Experience with SCRs, diodes, or similar power semiconductors in demanding environments\n\n - Proven experience translating research into tangible hardware and products\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"7c48cf04-62db-4cb8-9b7e-c23f267f45c1","title":"Software Engineer, Plant Control","department":"Software Engineering","team":"Software Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-03T23:44:46.538+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/7c48cf04-62db-4cb8-9b7e-c23f267f45c1","applyUrl":"https://jobs.ashbyhq.com/helion/7c48cf04-62db-4cb8-9b7e-c23f267f45c1/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
As a Software Engineer on the Plant Control team, you will help design, build, and scale the software systems that operate Helion’s fusion generators and the Orion fusion power plant. You will work across control systems, diagnostics, data infrastructure, operator interfaces, automation, and integration with electrical, mechanical, firmware, and science teams.
This is a generalist software role for someone who is comfortable moving between architecture and implementation, prototypes and production systems, and high-level plant design and hands-on machine operation. You will build software that interfaces with real hardware, supports rapid engineering iteration, and helps turn experimental fusion systems into reliable power plant infrastructure.
You will work onsite at our Everett, WA office.
Design, build, and maintain software for plant control, diagnostics, automation, and operator workflows
Develop interfaces that connect distributed sensors, actuators, controllers, databases, and visualization tools
Build reliable tools for monitoring machine health, system performance, test execution, and plant operations
Create and improve graphical user interfaces for engineers, operators, and scientists working with fusion machines and testbeds
Implement software that supports real-time control, data acquisition, and system coordination
Work with Electrical Engineering, Firmware, Mechanical Engineering, IT, Operations, and Science teams to integrate software with complex hardware systems
Improve the reliability, usability, and scalability of Helion’s internal control and diagnostic platforms
Investigate and introduce new tools, frameworks, and infrastructure that accelerate engineering development
Apply first-principles thinking to ambiguous technical problems where the right answer is not yet obvious
Bachelor’s degree in Computer Science, Computer Engineering, Electrical Engineering, Physics, or a related technical field, or equivalent practical experience
2+ years of professional software engineering experience
Strong programming ability in a systems programming language such as C++, Rust, or similar
Experience with Python or another high-level scripting language
Experience building software that interfaces with hardware, sensors, instruments, control systems, or other real-world systems
Comfortable working in Linux environments
Experience designing maintainable software systems, including testing, version control, debugging, and deployment practices
Ability to work across the full software lifecycle, from requirements gathering and prototyping through production support
Strong systems-level problem-solving skills and ability to debug issues across software, hardware, networks, and data flows
Ability to collaborate closely with engineers and scientists from multiple disciplines
Willingness to work onsite and stay close to the hardware, operators, and users of the systems you build
Experience with distributed control systems, industrial automation, SCADA, PLCs, or machine control
Experience with the V-model of development, including requirements definition, verification, validation, and traceability
Experience with precision timing, synchronization, PTP, or deterministic systems
Experience with embedded Linux, real-time systems, or low-level systems programming
Experience with time-series databases, data pipelines, and visualization tools such as InfluxDB, Grafana, or similar platforms
Experience building operator interfaces, internal engineering tools, dashboards, or data-rich GUIs
Experience with Docker, CI/CD, configuration management, or deployment automation
Experience working in high-energy systems, aerospace, robotics, manufacturing, power systems, scientific instrumentation, or other complex hardware environments
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\n \n\n\nWHAT YOU WILL BE DOING\n\nAs a Software Engineer on the Plant Control team, you will help design, build, and scale the software systems that operate Helion’s fusion generators and the Orion fusion power plant. You will work across control systems, diagnostics, data infrastructure, operator interfaces, automation, and integration with electrical, mechanical, firmware, and science teams.\n\nThis is a generalist software role for someone who is comfortable moving between architecture and implementation, prototypes and production systems, and high-level plant design and hands-on machine operation. You will build software that interfaces with real hardware, supports rapid engineering iteration, and helps turn experimental fusion systems into reliable power plant infrastructure.\n\nYou will work onsite at our Everett, WA office.\n\n\nYOU WILL\n\n - Design, build, and maintain software for plant control, diagnostics, automation, and operator workflows\n\n - Develop interfaces that connect distributed sensors, actuators, controllers, databases, and visualization tools\n\n - Build reliable tools for monitoring machine health, system performance, test execution, and plant operations\n\n - Create and improve graphical user interfaces for engineers, operators, and scientists working with fusion machines and testbeds\n\n - Implement software that supports real-time control, data acquisition, and system coordination\n\n - Work with Electrical Engineering, Firmware, Mechanical Engineering, IT, Operations, and Science teams to integrate software with complex hardware systems\n\n - Improve the reliability, usability, and scalability of Helion’s internal control and diagnostic platforms\n\n - Investigate and introduce new tools, frameworks, and infrastructure that accelerate engineering development\n\n - Apply first-principles thinking to ambiguous technical problems where the right answer is not yet obvious\n\n\nREQUIRED SKILLS\n\n - Bachelor’s degree in Computer Science, Computer Engineering, Electrical Engineering, Physics, or a related technical field, or equivalent practical experience\n\n - 2+ years of professional software engineering experience\n\n - Strong programming ability in a systems programming language such as C++, Rust, or similar\n\n - Experience with Python or another high-level scripting language\n\n - Experience building software that interfaces with hardware, sensors, instruments, control systems, or other real-world systems\n\n - Comfortable working in Linux environments\n\n - Experience designing maintainable software systems, including testing, version control, debugging, and deployment practices\n\n - Ability to work across the full software lifecycle, from requirements gathering and prototyping through production support\n\n - Strong systems-level problem-solving skills and ability to debug issues across software, hardware, networks, and data flows\n\n - Ability to collaborate closely with engineers and scientists from multiple disciplines\n\n - Willingness to work onsite and stay close to the hardware, operators, and users of the systems you build\n\n\nDESIRED SKILLS\n\n - Experience with distributed control systems, industrial automation, SCADA, PLCs, or machine control\n\n - Experience with the V-model of development, including requirements definition, verification, validation, and traceability\n\n - Experience with precision timing, synchronization, PTP, or deterministic systems\n\n - Experience with embedded Linux, real-time systems, or low-level systems programming\n\n - Experience with time-series databases, data pipelines, and visualization tools such as InfluxDB, Grafana, or similar platforms\n\n - Experience building operator interfaces, internal engineering tools, dashboards, or data-rich GUIs\n\n - Experience with Docker, CI/CD, configuration management, or deployment automation\n\n - Experience working in high-energy systems, aerospace, robotics, manufacturing, power systems, scientific instrumentation, or other complex hardware environments\n\n#LI-Onsite #LI-KL1\n\n \n\n\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"7e2b8df0-70ca-48c7-9238-ef5dfd1c5833","title":"PR Lead","department":"Communications","team":"Communications","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-05-13T22:44:39.620+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/7e2b8df0-70ca-48c7-9238-ef5dfd1c5833","applyUrl":"https://jobs.ashbyhq.com/helion/7e2b8df0-70ca-48c7-9238-ef5dfd1c5833/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
Helion is seeking a PR Lead to drive our media relations strategy during a period of rapid growth and expansion. This is a highly visible, high-impact role responsible for shaping how Helion is understood by the public, press, and key stakeholders.
You will serve as a primary interface between Helion and the media - translating complex fusion, energy, and manufacturing concepts into clear, compelling narratives that resonate across technical and mainstream audiences. As Helion moves toward deploying fusion energy systems globally, you will play a critical role in building awareness, credibility, and trust in our mission and technology.
In addition to leading media relations, you will support broader external communications efforts, including executive visibility, thought leadership, and major company announcements. This is an onsite role at our Everett, WA headquarters, reporting to the Director of Communications.
What You Will Do
Lead and execute Helion’s media relations strategy, building strong relationships with top-tier reporters, editors, and outlets across energy, technology, and business
Develop and pitch compelling stories that position Helion as a leader in fusion and next-generation energy
Support executive visibility and external speaking engagements by developing messaging, preparing speakers, and identifying strategic opportunities to elevate Helion’s brand and leadership
Serve as a trusted advisor to internal stakeholders, including executives, on media strategy, messaging, and external communications
Manage media inquiries and proactively shape coverage opportunities
Partner cross-functionally with engineering, manufacturing, science, and policy teams to surface newsworthy milestones and reputation-building initiatives
Required Skills
12+ years of experience in public relations, media relations, or strategic communications, with a proven track record of securing high-impact coverage in top-tier outlets
Strong network of media relationships across energy, climate, technology, or business press
Experience in technology, engineering, or scientific industries is a plus, especially roles partnering closely with technical experts
Exceptional ability to translate complex technical topics into clear, compelling narratives, with excellent writing and storytelling skills
Experience preparing executives and technical leaders for media interviews, speaking engagements, and public-facing events
Ability to operate independently and drive results in a fast-paced, high-growth environment
#LI-Onsite #LI-MM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nHelion is seeking a PR Lead to drive our media relations strategy during a period of rapid growth and expansion. This is a highly visible, high-impact role responsible for shaping how Helion is understood by the public, press, and key stakeholders.\n\nYou will serve as a primary interface between Helion and the media - translating complex fusion, energy, and manufacturing concepts into clear, compelling narratives that resonate across technical and mainstream audiences. As Helion moves toward deploying fusion energy systems globally, you will play a critical role in building awareness, credibility, and trust in our mission and technology.\n\nIn addition to leading media relations, you will support broader external communications efforts, including executive visibility, thought leadership, and major company announcements. This is an onsite role at our Everett, WA headquarters, reporting to the Director of Communications.\n\nWhat You Will Do\n\n - Lead and execute Helion’s media relations strategy, building strong relationships with top-tier reporters, editors, and outlets across energy, technology, and business\n\n - Develop and pitch compelling stories that position Helion as a leader in fusion and next-generation energy\n\n - Support executive visibility and external speaking engagements by developing messaging, preparing speakers, and identifying strategic opportunities to elevate Helion’s brand and leadership\n\n - Serve as a trusted advisor to internal stakeholders, including executives, on media strategy, messaging, and external communications\n\n - Manage media inquiries and proactively shape coverage opportunities\n\n - Partner cross-functionally with engineering, manufacturing, science, and policy teams to surface newsworthy milestones and reputation-building initiatives\n\nRequired Skills\n\n - 12+ years of experience in public relations, media relations, or strategic communications, with a proven track record of securing high-impact coverage in top-tier outlets\n\n - Strong network of media relationships across energy, climate, technology, or business press\n\n - Experience in technology, engineering, or scientific industries is a plus, especially roles partnering closely with technical experts\n\n - Exceptional ability to translate complex technical topics into clear, compelling narratives, with excellent writing and storytelling skills\n\n - Experience preparing executives and technical leaders for media interviews, speaking engagements, and public-facing events\n\n - Ability to operate independently and drive results in a fast-paced, high-growth environment\n\n#LI-Onsite #LI-MM1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"7f9ebb75-86f8-4717-a76b-39070e13dd40","title":"Community + Brand Manager","department":"Communications","team":"Communications","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-03T17:00:35.744+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/7f9ebb75-86f8-4717-a76b-39070e13dd40","applyUrl":"https://jobs.ashbyhq.com/helion/7f9ebb75-86f8-4717-a76b-39070e13dd40/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
Helion is seeking a Community + Brand Manager to shape how people experience Helion externally through tours, events, and other public-facing brand experiences. This role will help bring Helion’s story to life by creating engaging experiences that strengthen awareness of our mission and technology.
You will work across communications, creative, and cross-functional teams to coordinate public-facing programs and engagement opportunities that connect external audiences with Helion’s work and people. This is a highly collaborative role that combines event execution, program coordination, relationship management, and creating branded creative materials in a fast-paced, high-growth environment.
As Helion continues to grow, you will play an important role in shaping how visitors, partners, perspective employees, community members, and other external audiences experience and engage with Helion. This is an onsite role that reports to Helion’s Content Lead and our Everett WA, office.
You Will:
Lead talent brand and audience engagement initiatives that elevate Helion’s visibility among engineering and scientific audiences, including opportunities in and outside the Seattle area
Manage external events, sponsorships, and Helion-hosted experiences that strengthen awareness across key industries and talent markets
Support and grow Helion’s tour program, including visitor experience, tour logistics, and materials
Create branded materials for tours, events, and brand initiatives, including signage, presentations, and swag
Collaborate cross-functionally with Communications, Talent, Engineering, Public Affairs, and other internal stakeholders to support community-facing initiatives and external engagement opportunities
Support various branding projects and cross-functional initiatives as needed
Required Skills
5+ years of experience in experiential branding, communications, events, marketing, or related fields
Experience leading events, tours, or audience engagement initiatives that strengthen brand awareness or public engagement
Experience creating branded materials in Adobe Suite
Strong organizational and project management skills, with the ability to manage multiple initiatives simultaneously in a fast-paced environment
Ability to represent Helion professionally and confidently in external-facing environments with strong attention to detail and audience experience
Excellent interpersonal and communication skills
#LI-Onsite #LI-MM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nHelion is seeking a Community + Brand Manager to shape how people experience Helion externally through tours, events, and other public-facing brand experiences. This role will help bring Helion’s story to life by creating engaging experiences that strengthen awareness of our mission and technology.\n\nYou will work across communications, creative, and cross-functional teams to coordinate public-facing programs and engagement opportunities that connect external audiences with Helion’s work and people. This is a highly collaborative role that combines event execution, program coordination, relationship management, and creating branded creative materials in a fast-paced, high-growth environment.\n\nAs Helion continues to grow, you will play an important role in shaping how visitors, partners, perspective employees, community members, and other external audiences experience and engage with Helion. This is an onsite role that reports to Helion’s Content Lead and our Everett WA, office.\n\nYou Will:\n\n - Lead talent brand and audience engagement initiatives that elevate Helion’s visibility among engineering and scientific audiences, including opportunities in and outside the Seattle area\n\n - Manage external events, sponsorships, and Helion-hosted experiences that strengthen awareness across key industries and talent markets\n\n - Support and grow Helion’s tour program, including visitor experience, tour logistics, and materials\n\n - Create branded materials for tours, events, and brand initiatives, including signage, presentations, and swag\n\n - Collaborate cross-functionally with Communications, Talent, Engineering, Public Affairs, and other internal stakeholders to support community-facing initiatives and external engagement opportunities\n\n - Support various branding projects and cross-functional initiatives as needed\n\nRequired Skills\n\n - 5+ years of experience in experiential branding, communications, events, marketing, or related fields\n\n - Experience leading events, tours, or audience engagement initiatives that strengthen brand awareness or public engagement\n\n - Experience creating branded materials in Adobe Suite\n\n - Strong organizational and project management skills, with the ability to manage multiple initiatives simultaneously in a fast-paced environment\n\n - Ability to represent Helion professionally and confidently in external-facing environments with strong attention to detail and audience experience\n\n - Excellent interpersonal and communication skills\n\n#LI-Onsite #LI-MM1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"8906b43b-f948-4eb5-b1f6-445532264068","title":"Internal Communications Specialist","department":"Communications","team":"Communications","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-05-06T16:20:03.100+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/8906b43b-f948-4eb5-b1f6-445532264068","applyUrl":"https://jobs.ashbyhq.com/helion/8906b43b-f948-4eb5-b1f6-445532264068/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
This role will be pivotal in scaling Helion's internal communications programs, with ownership of key storytelling and communication mechanisms that keep our growing team aligned and engaged across every site and shift. You'll partner with Production and Manufacturing leaders to surface stories, support team-wide events, and write announcements and updates. Every day will look different, but your north star will be clarity and connection for our team of builders. This is an onsite role that reports directly to the Internal Communications Lead at our Everett, WA office.
You Will:
Plan, develop, and deliver of recurring internal communications, including newsletter features, team presentations, digital signage, and leader announcements
Strategize and support the execution of high-priority internal campaigns and events, including delivery of key topics at company-wide Town Halls
Partner with our Production and Manufacturing leaders to drive team engagement and alignment through existing channels (Technician All Hands), identifying new or evolving mechanisms to keep technicians connected across shifts
Manage intranet content / company wiki pages, working alongside documentation owners and SMEs to ensure published information is maintained as the single source of truth
Work with IS&T and People Ops to optimize the company's user groups (levels, teams, site locations) across company channels (distribution lists, Slack) to ensure the right messages reach the right employees
Required Skills:
5+ years of experience in internal communications, or employee engagement—ideally in a high-growth, manufacturing or hardware engineering environment
Track record of strong partnerships across all levels of an organization—from senior leaders to individual subject matter experts—to deliver communications plans that drive team alignment and engagement
Exceptional writing and editing skills, with a knack for tailoring key messages across multiple formats, diverse audiences and range of channels like email, Slack, Confluence and digital signage
Experience translating complex manufacturing or engineering topics into clear, compelling communications
Success driving projects with strong organization, attention to detail, and end-to-end ownership of storytelling
#LI-Onsite #LI-MM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nThis role will be pivotal in scaling Helion's internal communications programs, with ownership of key storytelling and communication mechanisms that keep our growing team aligned and engaged across every site and shift. You'll partner with Production and Manufacturing leaders to surface stories, support team-wide events, and write announcements and updates. Every day will look different, but your north star will be clarity and connection for our team of builders. This is an onsite role that reports directly to the Internal Communications Lead at our Everett, WA office.\n\nYou Will:\n\n - Plan, develop, and deliver of recurring internal communications, including newsletter features, team presentations, digital signage, and leader announcements\n\n - Strategize and support the execution of high-priority internal campaigns and events, including delivery of key topics at company-wide Town Halls\n\n - Partner with our Production and Manufacturing leaders to drive team engagement and alignment through existing channels (Technician All Hands), identifying new or evolving mechanisms to keep technicians connected across shifts\n\n - Manage intranet content / company wiki pages, working alongside documentation owners and SMEs to ensure published information is maintained as the single source of truth\n\n - Work with IS&T and People Ops to optimize the company's user groups (levels, teams, site locations) across company channels (distribution lists, Slack) to ensure the right messages reach the right employees\n\nRequired Skills:\n\n - 5+ years of experience in internal communications, or employee engagement—ideally in a high-growth, manufacturing or hardware engineering environment\n\n - Track record of strong partnerships across all levels of an organization—from senior leaders to individual subject matter experts—to deliver communications plans that drive team alignment and engagement\n\n - Exceptional writing and editing skills, with a knack for tailoring key messages across multiple formats, diverse audiences and range of channels like email, Slack, Confluence and digital signage\n\n - Experience translating complex manufacturing or engineering topics into clear, compelling communications\n\n - Success driving projects with strong organization, attention to detail, and end-to-end ownership of storytelling\n\n#LI-Onsite #LI-MM1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"8ab1a5c0-a9c6-44c9-8caf-cb618db38890","title":"Senior Manufacturing Engineer","department":"Supply Chain","team":"Supply Chain","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-15T17:41:16.929+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/8ab1a5c0-a9c6-44c9-8caf-cb618db38890","applyUrl":"https://jobs.ashbyhq.com/helion/8ab1a5c0-a9c6-44c9-8caf-cb618db38890/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will design, implement, and optimize the production process for in-house capacitors. This is a unique opportunity to collaborate with other teams (Supply Chain, Production, Engineering, Test Operations), directly influence the commissioning timeline for Helion’s first power plant, and lay the groundwork for Helion’s transition to generator mass-manufacturing. You will report to the Senior Manager of Capacitor Manufacturing and this is an onsite role located at our Everett, WA office.
You Will:
Design and implement rate-based assembly processes with support from Production and Engineering
Own and manage interdisciplinary projects to increase rate and throughput of capacitor line (e.g., floor layout, tooling, build cells, large-scale equipment)
Help develop new business processes such as non-conformance management, process control, process safety, and asset maintenance to grow production line and build the foundation for high-volume production
Gather data (labor hours, cycle times, fallout) to identify production bottlenecks, and propose and deploy solutions (design changes, process changes, equipment, automation)
Identify high return-on-investment capabilities, including capital equipment and software capabilities that improve manufacturing processes, partnering with Production, Finance, Operations, and Facilities teams
Collaborate on development of future processes in parallel with supporting and enabling higher output on current production line
Required Skills:
8+ years of technical work experience that includes development and improvement of production systems
Hands-on engineering or manufacturing experience in rate-based and high-volume manufacturing
Experience communicating with and influencing partners across organizational lines
Experience in cradle-to-grave ownership of complex engineering or production scopes
#LI-Onsite #LI-SA1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\nWhat You Will Be Doing:\n\nYou will design, implement, and optimize the production process for in-house capacitors. This is a unique opportunity to collaborate with other teams (Supply Chain, Production, Engineering, Test Operations), directly influence the commissioning timeline for Helion’s first power plant, and lay the groundwork for Helion’s transition to generator mass-manufacturing. You will report to the Senior Manager of Capacitor Manufacturing and this is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Design and implement rate-based assembly processes with support from Production and Engineering\n\n - Own and manage interdisciplinary projects to increase rate and throughput of capacitor line (e.g., floor layout, tooling, build cells, large-scale equipment)\n\n - Help develop new business processes such as non-conformance management, process control, process safety, and asset maintenance to grow production line and build the foundation for high-volume production\n\n - Gather data (labor hours, cycle times, fallout) to identify production bottlenecks, and propose and deploy solutions (design changes, process changes, equipment, automation)\n\n - Identify high return-on-investment capabilities, including capital equipment and software capabilities that improve manufacturing processes, partnering with Production, Finance, Operations, and Facilities teams\n\n - Collaborate on development of future processes in parallel with supporting and enabling higher output on current production line\n\nRequired Skills:\n\n - 8+ years of technical work experience that includes development and improvement of production systems\n\n - Hands-on engineering or manufacturing experience in rate-based and high-volume manufacturing\n\n - Experience communicating with and influencing partners across organizational lines\n\n - Experience in cradle-to-grave ownership of complex engineering or production scopes\n\n#LI-Onsite #LI-SA1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"8ba990f2-6221-4834-8f50-75a237fe614a","title":"Senior Plasma Data Scientist","department":"Science","team":"Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-15T19:59:30.676+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/8ba990f2-6221-4834-8f50-75a237fe614a","applyUrl":"https://jobs.ashbyhq.com/helion/8ba990f2-6221-4834-8f50-75a237fe614a/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
Helion is hiring a Senior Plasma Data Scientist specializing in synthetic diagnostics to improve how we measure, interpret, and model FRC plasma behavior. In this role, you will develop and validate synthetic diagnostic models that connect experimental diagnostic signals with simulation outputs, helping improve diagnostic accuracy and plasma performance interpretation. In your first year, you will focus on integrating these models with experimental and simulation data pipelines to support faster, more reliable experimental analysis. This position reports to the Experimental Science Manager at our Everett, WA office and plays a key role in advancing Helion’s path toward fusion electricity.
You Will:
Develop and validate machine‑learning frameworks for FRC plasma‑dynamics, leveraging physics‑grounded ML approaches (e.g., differentiable physics, PINNs, surrogate modeling, or hybrid physics+ML systems)
Integrate ML models with existing simulation tools and experimental‑diagnostic pipelines to enable hybrid physics + data‑driven validation workflows
Reproduce experimental plasma conditions within ML modeling workflows to support interpretation of magnetic diffusion, circuit response, and diagnostic measurements
Generate analysis scripts for post‑processing, parsing model outputs, and visualizing correlations between ML‑based predictions and experimental results
Collaborate with plasma‑physics, pulsed‑power, and transient‑magnetics experts to expand the fidelity and fusion‑relevance of ML‑enabled modeling frameworks
Communicate results with rigor and clarity through reports, presentations, and technical visualizations for research stakeholders
Required Skills:
PhD in Physics, Engineering, Applied Math, Computational Science, Machine Learning, or related field with emphasis on physics‑grounded modeling
3+ years of industry or research‑lab experience applying machine learning in experimental, simulation‑driven, or scientific R&D environments
Expertise with physics‑informed or physics‑constrained ML methods, such as differentiable physics, PINNs, scientific ML, surrogate modeling, or reduced‑order models for complex physical systems
Experience integrating ML models with scientific‑computing workflows, simulation tools, or experimental diagnostics
Proficiency scripting for data parsing, model analysis, and visualization (MATLAB, Python, or similar; Fortran or HPC exposure valuable)
Familiarity with magnetic diffusion, circuit coupling, or plasma‑dynamics modeling in pulsed‑power or electromagnetics systems
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\nWhat You Will Be Doing:\nHelion is hiring a Senior Plasma Data Scientist specializing in synthetic diagnostics to improve how we measure, interpret, and model FRC plasma behavior. In this role, you will develop and validate synthetic diagnostic models that connect experimental diagnostic signals with simulation outputs, helping improve diagnostic accuracy and plasma performance interpretation. In your first year, you will focus on integrating these models with experimental and simulation data pipelines to support faster, more reliable experimental analysis. This position reports to the Experimental Science Manager at our Everett, WA office and plays a key role in advancing Helion’s path toward fusion electricity.\n\n\n\nYou Will:\n\n - Develop and validate machine‑learning frameworks for FRC plasma‑dynamics, leveraging physics‑grounded ML approaches (e.g., differentiable physics, PINNs, surrogate modeling, or hybrid physics+ML systems)\n\n - Integrate ML models with existing simulation tools and experimental‑diagnostic pipelines to enable hybrid physics + data‑driven validation workflows\n\n - Reproduce experimental plasma conditions within ML modeling workflows to support interpretation of magnetic diffusion, circuit response, and diagnostic measurements\n\n - Generate analysis scripts for post‑processing, parsing model outputs, and visualizing correlations between ML‑based predictions and experimental results\n\n - Collaborate with plasma‑physics, pulsed‑power, and transient‑magnetics experts to expand the fidelity and fusion‑relevance of ML‑enabled modeling frameworks\n\n - Communicate results with rigor and clarity through reports, presentations, and technical visualizations for research stakeholders\n\n\n\nRequired Skills:\n\n - PhD in Physics, Engineering, Applied Math, Computational Science, Machine Learning, or related field with emphasis on physics‑grounded modeling\n\n - 3+ years of industry or research‑lab experience applying machine learning in experimental, simulation‑driven, or scientific R&D environments\n\n - Expertise with physics‑informed or physics‑constrained ML methods, such as differentiable physics, PINNs, scientific ML, surrogate modeling, or reduced‑order models for complex physical systems\n\n - Experience integrating ML models with scientific‑computing workflows, simulation tools, or experimental diagnostics\n\n - Proficiency scripting for data parsing, model analysis, and visualization (MATLAB, Python, or similar; Fortran or HPC exposure valuable)\n\n - Familiarity with magnetic diffusion, circuit coupling, or plasma‑dynamics modeling in pulsed‑power or electromagnetics systems\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"90f4d795-6496-4ac3-bec8-704ad27cadf8","title":"Procurement Specialist","department":"Supply Chain","team":"Supply Chain","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-05-21T23:38:35.775+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/90f4d795-6496-4ac3-bec8-704ad27cadf8","applyUrl":"https://jobs.ashbyhq.com/helion/90f4d795-6496-4ac3-bec8-704ad27cadf8/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
Due to organization growth, we are seeking multiple proactive and driven Procurement Specialists to join our growing team. You'll collaborate closely with cross-functional teams to procure off the shelf hardware, equipment, services and software, ensuring timely execution of requirements as needed by Helion Energy’s technical and production teams. This position offers the opportunity to become involved in a wide range of procurement activities and categories in a quickly growing organization, along with helping to determine effective procurement processes as our team expands. This is an onsite role that reports directly to the Manager of Procurement at our Everett, WA office.
You Will
Support sourcing of direct or indirect items and service categories for custom requirements and applications.
Create purchase orders to procure hardware, equipment, software and services.
Pursue credit terms with vendors and assist with execution of contracts, forms and agreements.
Resolve receiving and invoicing discrepancies.
Maintain accurate ERP vendor and open order data.
Evolve and implement processes in coordination with team leads and management.
Required Skills:
Bachelor's degree or the equivalent working experience.
1 - 3+ years of experience working in procurement, operations, or buying function supporting manufacturing and R&D.
Operate independently with strong business acumen and problem-solving skills.
#LI-Onsite
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nDue to organization growth, we are seeking multiple proactive and driven Procurement Specialists to join our growing team. You'll collaborate closely with cross-functional teams to procure off the shelf hardware, equipment, services and software, ensuring timely execution of requirements as needed by Helion Energy’s technical and production teams. This position offers the opportunity to become involved in a wide range of procurement activities and categories in a quickly growing organization, along with helping to determine effective procurement processes as our team expands. This is an onsite role that reports directly to the Manager of Procurement at our Everett, WA office.\n\nYou Will\n\n - Support sourcing of direct or indirect items and service categories for custom requirements and applications.\n\n - Create purchase orders to procure hardware, equipment, software and services.\n\n - Pursue credit terms with vendors and assist with execution of contracts, forms and agreements.\n\n - Resolve receiving and invoicing discrepancies.\n\n - Maintain accurate ERP vendor and open order data.\n\n - Evolve and implement processes in coordination with team leads and management.\n\nRequired Skills:\n\n - Bachelor's degree or the equivalent working experience.\n\n - 1 - 3+ years of experience working in procurement, operations, or buying function supporting manufacturing and R&D.\n\n - Operate independently with strong business acumen and problem-solving skills.\n\n#LI-Onsite\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"915d42ad-2618-4eba-997c-f36cc8991742","title":"Senior Mechanical Engineer, Thermal","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-12-19T19:26:14.890+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/915d42ad-2618-4eba-997c-f36cc8991742","applyUrl":"https://jobs.ashbyhq.com/helion/915d42ad-2618-4eba-997c-f36cc8991742/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will own thermo-mechanical hardware designs for Helion's fusion generator. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. You will report to the Senior Manager of Engineering, and this is an onsite role located at our Everett, WA office.
You Will:
Own and understand designs related to thermal, fluids, and structural subsystems – and improve their requirements.
Learn from historical engineering approaches, design novel hardware, and test your solutions
Design fusion hardware within 3D CAD software (e.g. NX)
Perform analysis (1D, 2D, 3D) with in-house and out-of-house tools (e.g. ANSYS) and hold design reviews to gather feedback and iterate to a fully functioning system
Learn from experts to expand your engineering skillset and domain knowledge
Work hands-on alongside experienced technicians to implement your hardware designs
Troubleshoot hardware issues as they arise on integrated fusion generators
Required Skills:
Bachelor's degree in engineering
7+ years of professional experience delivering on full-scope engineering projects (including schedule ownership)
Experience applying engineering first-principles and method-based thinking to challenging problems
Hands-on exposure to a variety of engineering disciplines (fluids, mechanical, thermal)
Advanced experience with CAD software (e.g. NX, Solidworks)
#LI-Onsite, #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will own thermo-mechanical hardware designs for Helion's fusion generator. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. You will report to the Senior Manager of Engineering, and this is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Own and understand designs related to thermal, fluids, and structural subsystems – and improve their requirements.\n\n - Learn from historical engineering approaches, design novel hardware, and test your solutions\n\n - Design fusion hardware within 3D CAD software (e.g. NX)\n\n - Perform analysis (1D, 2D, 3D) with in-house and out-of-house tools (e.g. ANSYS) and hold design reviews to gather feedback and iterate to a fully functioning system\n\n - Learn from experts to expand your engineering skillset and domain knowledge\n\n - Work hands-on alongside experienced technicians to implement your hardware designs\n\n - Troubleshoot hardware issues as they arise on integrated fusion generators\n\nRequired Skills:\n\n - Bachelor's degree in engineering\n\n - 7+ years of professional experience delivering on full-scope engineering projects (including schedule ownership)\n\n - Experience applying engineering first-principles and method-based thinking to challenging problems\n\n - Hands-on exposure to a variety of engineering disciplines (fluids, mechanical, thermal)\n\n - Advanced experience with CAD software (e.g. NX, Solidworks)\n\n#LI-Onsite, #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"967ff349-0e5e-4431-993d-136026d71239","title":"Mechanical Engineer","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-03-04T23:44:39.457+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/967ff349-0e5e-4431-993d-136026d71239","applyUrl":"https://jobs.ashbyhq.com/helion/967ff349-0e5e-4431-993d-136026d71239/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will own the design and development of hardware for Helion’s fusion devices. In this role, you will solve complex, multidisciplinary engineering problems critical to deploying fusion energy at scale. You will collaborate closely with engineers and technicians while contributing to the culture and growth of a fast-moving team. This is an onsite role located at our Everett, WA office.
You Will:
Own and improve subsystem designs including electromagnetic, structural, fluid, thermal, and control systems
Learn from historical engineering approaches and design novel hardware for testing and integration into Helion’s fusion devices
Design hardware in CAD software such as NX or SolidWorks
Perform analysis using tools like ANSYS and lead design reviews to incorporate feedback and iterate toward functioning systems
Expand your engineering skills and domain knowledge by learning from experts
Work hands-on with experienced technicians to build and implement hardware designs
Troubleshoot hardware issues on integrated fusion generators as they arise
Required Skills:
Bachelor’s degree in Engineering
3+ years of professional experience delivering full-scope engineering projects, including schedule ownership
Experience applying first-principles and method-based thinking to solve technical problems
Hands-on exposure to multiple engineering disciplines including mechanical, electrical, and fluids
Advanced experience with CAD software (e.g., NX, SolidWorks)
Experience with FEA software (e.g., ANSYS, FEMAP)
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will own the design and development of hardware for Helion’s fusion devices. In this role, you will solve complex, multidisciplinary engineering problems critical to deploying fusion energy at scale. You will collaborate closely with engineers and technicians while contributing to the culture and growth of a fast-moving team. This is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Own and improve subsystem designs including electromagnetic, structural, fluid, thermal, and control systems\n\n - Learn from historical engineering approaches and design novel hardware for testing and integration into Helion’s fusion devices\n\n - Design hardware in CAD software such as NX or SolidWorks\n\n - Perform analysis using tools like ANSYS and lead design reviews to incorporate feedback and iterate toward functioning systems\n\n - Expand your engineering skills and domain knowledge by learning from experts\n\n - Work hands-on with experienced technicians to build and implement hardware designs\n\n - Troubleshoot hardware issues on integrated fusion generators as they arise\n\nRequired Skills:\n\n - Bachelor’s degree in Engineering\n\n - 3+ years of professional experience delivering full-scope engineering projects, including schedule ownership\n\n - Experience applying first-principles and method-based thinking to solve technical problems\n\n - Hands-on exposure to multiple engineering disciplines including mechanical, electrical, and fluids\n\n - Advanced experience with CAD software (e.g., NX, SolidWorks)\n\n - Experience with FEA software (e.g., ANSYS, FEMAP)\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"99e6fa04-9412-453a-a350-4b6d6f38aec3","title":"Senior Mechanical Engineer, Modules","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-01-28T04:37:47.068+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/99e6fa04-9412-453a-a350-4b6d6f38aec3","applyUrl":"https://jobs.ashbyhq.com/helion/99e6fa04-9412-453a-a350-4b6d6f38aec3/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will own hardware designs for Helion's fusion generator prototypes. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. You will report directly to our Manager of Mechanical Engineering, and this is an onsite role located at our Everett, WA office.
You Will:
Own and understand subsystem designs such as electromagnetic, structural, fluid, thermal and control systems, and improve their requirements
Learn from historical engineering approaches, design novel hardware, and test your solutions
Optimize sub-system and component designs to scale for high volume manufacturing
Design fusion hardware within 3D CAD software (e.g. NX, Solidworks)
Perform analysis with tools like ANSYS and hold design reviews to gather feedback and iterate to a fully functioning system
Learn from experts to expand your engineering skillset and domain knowledge
Work hands-on alongside experienced technicians to implement your hardware designs
Troubleshoot hardware issues as they arise on integrated fusion generators
Required Skills:
Bachelor's degree in engineering
8+ years of professional experience delivering on full-scope engineering projects (including schedule ownership)
Experience applying engineering first-principles and method-based thinking to challenging problems
Hands-on exposure to a variety of engineering disciplines (mechanical, electrical, fluids)
Experience designing, testing, and launching production hardware at scale
Advanced experience with CAD software (e.g. NX, Solidworks)
Moderate experience with GD&T and generating engineering drawings per ASME Y14.5
Moderate experience with FEA software (e.g. ANSYS, FEMAP)
#LI-Onsite
#LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will own hardware designs for Helion's fusion generator prototypes. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. You will report directly to our Manager of Mechanical Engineering, and this is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Own and understand subsystem designs such as electromagnetic, structural, fluid, thermal and control systems, and improve their requirements\n\n - Learn from historical engineering approaches, design novel hardware, and test your solutions\n\n - Optimize sub-system and component designs to scale for high volume manufacturing\n\n - Design fusion hardware within 3D CAD software (e.g. NX, Solidworks)\n\n - Perform analysis with tools like ANSYS and hold design reviews to gather feedback and iterate to a fully functioning system\n\n - Learn from experts to expand your engineering skillset and domain knowledge\n\n - Work hands-on alongside experienced technicians to implement your hardware designs\n\n - Troubleshoot hardware issues as they arise on integrated fusion generators\n\nRequired Skills:\n\n - Bachelor's degree in engineering\n\n - 8+ years of professional experience delivering on full-scope engineering projects (including schedule ownership)\n\n - Experience applying engineering first-principles and method-based thinking to challenging problems\n\n - Hands-on exposure to a variety of engineering disciplines (mechanical, electrical, fluids)\n\n - Experience designing, testing, and launching production hardware at scale\n\n - Advanced experience with CAD software (e.g. NX, Solidworks)\n\n - Moderate experience with GD&T and generating engineering drawings per ASME Y14.5\n\n - Moderate experience with FEA software (e.g. ANSYS, FEMAP)\n\n#LI-Onsite\n\n#LI-KL1\n\n \n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"9a2f04d6-9fe1-4d87-8d7e-77877a418ac2","title":"Manager, Electrical Engineering","department":"Electrical Engineering","team":"Electrical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-12-19T18:31:03.969+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/9a2f04d6-9fe1-4d87-8d7e-77877a418ac2","applyUrl":"https://jobs.ashbyhq.com/helion/9a2f04d6-9fe1-4d87-8d7e-77877a418ac2/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will lead the development of high-voltage circuit designs and hardware systems for Helion’s fusion devices. Your primary responsibility will be to grow and lead a high-performing electrical engineering team by providing mentorship, modeling technical excellence, and driving execution speed. You will solve complex engineering challenges that directly impact machine performance and help deliver clean, low-cost, reliable electricity to the world. You will report to the Senior Manager of Electrical Engineering and this is an onsite role located at our Everett, WA office.
You Will:
Grow and mentor a team of multidisciplinary electrical engineers
Oversee design of machine architecture, pulsed power circuits, grid-interfacing systems, and circuit modeling including plasma coupling
Drive schedule ownership and optimization across the team to accelerate milestone achievement
Lead design, analysis, and process improvements to increase engineering throughput
Collaborate with Research, Mechanical, and Production teams to derive system requirements and meet program goals
Required Skills:
Bachelor’s degree in Engineering or a related discipline
7+ years of engineering experience, including 2+ years in a technical leadership or management role
Proven ability to grow engineers and positively impact their career progression
Experience leading multidisciplinary teams with full project ownership
Demonstrated success managing complex engineering projects with schedule accountability
Hands-on experience across multiple engineering disciplines such as electrical, mechanical, and manufacturing
Ability to apply first-principles thinking to solve complex technical problems
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will lead the development of high-voltage circuit designs and hardware systems for Helion’s fusion devices. Your primary responsibility will be to grow and lead a high-performing electrical engineering team by providing mentorship, modeling technical excellence, and driving execution speed. You will solve complex engineering challenges that directly impact machine performance and help deliver clean, low-cost, reliable electricity to the world. You will report to the Senior Manager of Electrical Engineering and this is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Grow and mentor a team of multidisciplinary electrical engineers\n\n - Oversee design of machine architecture, pulsed power circuits, grid-interfacing systems, and circuit modeling including plasma coupling\n\n - Drive schedule ownership and optimization across the team to accelerate milestone achievement\n\n - Lead design, analysis, and process improvements to increase engineering throughput\n\n - Collaborate with Research, Mechanical, and Production teams to derive system requirements and meet program goals\n\nRequired Skills:\n\n - Bachelor’s degree in Engineering or a related discipline\n\n - 7+ years of engineering experience, including 2+ years in a technical leadership or management role\n\n - Proven ability to grow engineers and positively impact their career progression\n\n - Experience leading multidisciplinary teams with full project ownership\n\n - Demonstrated success managing complex engineering projects with schedule accountability\n\n - Hands-on experience across multiple engineering disciplines such as electrical, mechanical, and manufacturing\n\n - Ability to apply first-principles thinking to solve complex technical problems\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"9b11de3a-b129-432a-81c2-56dbdf64e5a9","title":"Senior Process Engineer, Fuel Cycle","department":"Fuel Cycle","team":"Fuel Cycle","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-05-18T21:28:54.672+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/9b11de3a-b129-432a-81c2-56dbdf64e5a9","applyUrl":"https://jobs.ashbyhq.com/helion/9b11de3a-b129-432a-81c2-56dbdf64e5a9/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You’ll Be Doing
You will be at the forefront of designing the world's first continuous fusion fuel cycle – an opportunity to redefine the future of clean energy for the modern world. You will lead process design and implementation for major systems in our fuel cycle, taking systems from concept to commissioning. You'll work with engineers, scientists, and technicians across the company, with a focus on scaling up and integrating these systems into our commercial fusion platform. You will report to the Fuel Cycle Manager and work onsite at our Everett, WA office.
You Will
Own creation-to-integration engineering for major components of the fuel cycle, including system process design, procurement, installation, and commissioning
Perform detailed design for process equipment such as columns, reactors, membranes, heaters, pumps, and piping under varied conditions (ambient, cryogenic, and vacuum)
Use process simulation tools to support design development, integration, and case studies
Produce important deliverables including PFDs, P&IDs, H&MBs, HAZOPs, and sizing calculations
Independently lead projects across engineering disciplines (mechanical, electrical, controls, and operations) to deliver fully integrated process designs
Lead high-level design reviews to validate solutions and incorporate feedback into systems
Mentor fuel cycle engineers and work cross-functionally to build technical capabilities across Helion
Required Skills
Bachelor's degree in Chemical or Mechanical or equivalent experience in chemical process design or development
8+ years of experience delivering full-scope chemical engineering projects, including managing technical deliverables and schedules
Experience taking engineering ideas from abstract concepts to physical reality, demonstrated by delivering first-of-a-kind hardware solutions
Experience applying first-principles thinking by leading design and troubleshooting in complex engineering systems
Experience performing detailed process equipment sizing calculations including chemical, fluid, thermal, mechanical, and relief systems
Experience leading and working on multidisciplinary engineering projects
#LI-Onsite #LI-TM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You’ll Be Doing\n\nYou will be at the forefront of designing the world's first continuous fusion fuel cycle – an opportunity to redefine the future of clean energy for the modern world. You will lead process design and implementation for major systems in our fuel cycle, taking systems from concept to commissioning. You'll work with engineers, scientists, and technicians across the company, with a focus on scaling up and integrating these systems into our commercial fusion platform. You will report to the Fuel Cycle Manager and work onsite at our Everett, WA office.\n\nYou Will\n\n - Own creation-to-integration engineering for major components of the fuel cycle, including system process design, procurement, installation, and commissioning\n\n - Perform detailed design for process equipment such as columns, reactors, membranes, heaters, pumps, and piping under varied conditions (ambient, cryogenic, and vacuum)\n\n - Use process simulation tools to support design development, integration, and case studies\n\n - Produce important deliverables including PFDs, P&IDs, H&MBs, HAZOPs, and sizing calculations\n\n - Independently lead projects across engineering disciplines (mechanical, electrical, controls, and operations) to deliver fully integrated process designs\n\n - Lead high-level design reviews to validate solutions and incorporate feedback into systems\n\n - Mentor fuel cycle engineers and work cross-functionally to build technical capabilities across Helion\n\nRequired Skills\n\n - Bachelor's degree in Chemical or Mechanical or equivalent experience in chemical process design or development\n\n - 8+ years of experience delivering full-scope chemical engineering projects, including managing technical deliverables and schedules\n\n - Experience taking engineering ideas from abstract concepts to physical reality, demonstrated by delivering first-of-a-kind hardware solutions\n\n - Experience applying first-principles thinking by leading design and troubleshooting in complex engineering systems\n\n - Experience performing detailed process equipment sizing calculations including chemical, fluid, thermal, mechanical, and relief systems\n\n - Experience leading and working on multidisciplinary engineering projects\n\n#LI-Onsite #LI-TM1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"a1969b3f-8e12-4d74-9e0a-840472ffa46d","title":"Manager, Experimental Science","department":"Science","team":"Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-12-13T00:37:58.223+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/a1969b3f-8e12-4d74-9e0a-840472ffa46d","applyUrl":"https://jobs.ashbyhq.com/helion/a1969b3f-8e12-4d74-9e0a-840472ffa46d/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
We are looking for a Manager of Experimental Science to manage experimental diagnostics projects and to lead a team of scientists and engineers in the design, implementation, and testing of devices and technologies aimed at enhancing fusion plasma performance. This is an onsite role that reports directly to the Director of Plasma and Nuclear Science at our Everett, WA office.
You Will:
Lead a team of scientists and engineers working on various projects and initiatives
Present scientific progress updates during internal meetings and conferences
Create the team roadmap taking into consideration how the physics of different subsystems work together to create a strategic vision
Collaborate with other scientists and engineers in the development and testing of experimental instrumentation and procedures
Drive schedule ownership and optimization by team members to accelerate milestones
Drive design, analysis, and process improvements to increase throughput
Required Skills:
Advanced degree in physics or related physical science discipline
5+ years of scientific research experience with 3+ years managing scientists or engineers in research, development, or technology settings
Knowledge of applied plasma physics with hands-on experience in hardware design and development
Experience leading multidisciplinary teams and managing complex interdepartmental projects, including schedule ownership
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\nWe are looking for a Manager of Experimental Science to manage experimental diagnostics projects and to lead a team of scientists and engineers in the design, implementation, and testing of devices and technologies aimed at enhancing fusion plasma performance. This is an onsite role that reports directly to the Director of Plasma and Nuclear Science at our Everett, WA office.\n\nYou Will:\n\n - Lead a team of scientists and engineers working on various projects and initiatives \n\n - Present scientific progress updates during internal meetings and conferences \n\n - Create the team roadmap taking into consideration how the physics of different subsystems work together to create a strategic vision \n\n - Collaborate with other scientists and engineers in the development and testing of experimental instrumentation and procedures \n\n - Drive schedule ownership and optimization by team members to accelerate milestones \n\n - Drive design, analysis, and process improvements to increase throughput \n\nRequired Skills:\n\n - Advanced degree in physics or related physical science discipline\n\n - 5+ years of scientific research experience with 3+ years managing scientists or engineers in research, development, or technology settings\n\n - Knowledge of applied plasma physics with hands-on experience in hardware design and development\n\n - Experience leading multidisciplinary teams and managing complex interdepartmental projects, including schedule ownership\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"a30faf99-e156-46ec-8dc0-23f87bfe2dba","title":"Test Automation Engineer, Manufacturing ","department":"Supply Chain","team":"Supply Chain","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-23T22:54:35.966+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/a30faf99-e156-46ec-8dc0-23f87bfe2dba","applyUrl":"https://jobs.ashbyhq.com/helion/a30faf99-e156-46ec-8dc0-23f87bfe2dba/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will own and improve automated manufacturing test systems for high-voltage electrical assemblies used in energy-storage components for Helion’s fusion generators. This role sits within Manufacturing Engineering and supports the transition from prototype builds to volume manufacturing by developing production test processes, integrating instrumentation, improving test software, troubleshooting equipment issues, and ensuring test stations are safe, repeatable, maintainable, and scalable. You will work closely with Design Engineering, Operations, Maintenance, and external vendors to improve test coverage, throughput, equipment readiness, and manufacturing traceability. This is an onsite role that reports directly to the Manager of Manufacturing Engineering at our Everett, WA office.
You Will:
Own and improve automated manufacturing test systems from prototype implementation through production release, ramp, and sustainment.
Develop production test processes for capacitor manufacturing, including in-line testing, end-of-line testing, accelerated qualification testing, and safe commissioning practices.
Translate product requirements, failure modes, and pulsed-power circuit requirements into repeatable test methods, limits, diagnostics, and acceptance criteria.
Develop and maintain test software, data collection systems, visualization tools, automated reporting, and analysis tools used to monitor test station performance, yield, throughput, process health, and KPIs.
Integrate programmable instrumentation, sensors, controls, and test equipment into safe, reliable, and maintainable automated test systems.
Design and improve automated test processes with appropriate controls for high-voltage and stored-energy hazards, including interlocks, fault handling, procedural controls, and equipment documentation.
Work cross-functionally with Design Engineering, Operations Engineering, Maintenance, technicians, and vendors to improve design for test, automation, manufacturability, maintainability, MES integration, traceability, and production ramp readiness.
Troubleshoot automated test equipment, establish root cause, and implement corrective actions that improve uptime, reliability, and recurrence prevention.
Required Skills:
5+ years of experience developing, deploying, or sustaining automated manufacturing test systems, production equipment, or semi-/fully automated manufacturing processes in a hardware manufacturing environment.
Strong manufacturing engineering fundamentals, including process development, production ramp, equipment readiness, troubleshooting, root cause analysis, and continuous improvement.
Proficiency developing test automation software in Python or a comparable language for production equipment, instrumentation, data acquisition, or automated test execution.
Experience integrating programmable instrumentation or test equipment using SCPI, GPIB, Ethernet/LAN, serial communication, DAQ hardware, or similar interfaces.
Ability to translate product requirements, failure modes, and engineering assumptions into repeatable production test methods, limits, diagnostics, and acceptance criteria.
Experience working cross-functionally with Design Engineering, Operations, Production, Maintenance, technicians, supply chain, and external equipment vendors.
Experience using SQL or similar database tools for manufacturing data collection, analysis, traceability, reporting, or critical data management.
Working knowledge of high-voltage electrical circuits, stored-energy hazards, and safe test system design principles.
#LI-ONSITE #LI-SA1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\nWhat You Will Be Doing:\n\nYou will own and improve automated manufacturing test systems for high-voltage electrical assemblies used in energy-storage components for Helion’s fusion generators. This role sits within Manufacturing Engineering and supports the transition from prototype builds to volume manufacturing by developing production test processes, integrating instrumentation, improving test software, troubleshooting equipment issues, and ensuring test stations are safe, repeatable, maintainable, and scalable. You will work closely with Design Engineering, Operations, Maintenance, and external vendors to improve test coverage, throughput, equipment readiness, and manufacturing traceability. This is an onsite role that reports directly to the Manager of Manufacturing Engineering at our Everett, WA office.\n\nYou Will:\n\n - Own and improve automated manufacturing test systems from prototype implementation through production release, ramp, and sustainment.\n\n - Develop production test processes for capacitor manufacturing, including in-line testing, end-of-line testing, accelerated qualification testing, and safe commissioning practices.\n\n - Translate product requirements, failure modes, and pulsed-power circuit requirements into repeatable test methods, limits, diagnostics, and acceptance criteria.\n\n - Develop and maintain test software, data collection systems, visualization tools, automated reporting, and analysis tools used to monitor test station performance, yield, throughput, process health, and KPIs.\n\n - Integrate programmable instrumentation, sensors, controls, and test equipment into safe, reliable, and maintainable automated test systems.\n\n - Design and improve automated test processes with appropriate controls for high-voltage and stored-energy hazards, including interlocks, fault handling, procedural controls, and equipment documentation.\n\n - Work cross-functionally with Design Engineering, Operations Engineering, Maintenance, technicians, and vendors to improve design for test, automation, manufacturability, maintainability, MES integration, traceability, and production ramp readiness.\n\n - Troubleshoot automated test equipment, establish root cause, and implement corrective actions that improve uptime, reliability, and recurrence prevention.\n\n\n\nRequired Skills:\n\n - 5+ years of experience developing, deploying, or sustaining automated manufacturing test systems, production equipment, or semi-/fully automated manufacturing processes in a hardware manufacturing environment.\n\n - Strong manufacturing engineering fundamentals, including process development, production ramp, equipment readiness, troubleshooting, root cause analysis, and continuous improvement.\n\n - Proficiency developing test automation software in Python or a comparable language for production equipment, instrumentation, data acquisition, or automated test execution.\n\n - Experience integrating programmable instrumentation or test equipment using SCPI, GPIB, Ethernet/LAN, serial communication, DAQ hardware, or similar interfaces.\n\n - Ability to translate product requirements, failure modes, and engineering assumptions into repeatable production test methods, limits, diagnostics, and acceptance criteria.\n\n - Experience working cross-functionally with Design Engineering, Operations, Production, Maintenance, technicians, supply chain, and external equipment vendors.\n\n - Experience using SQL or similar database tools for manufacturing data collection, analysis, traceability, reporting, or critical data management.\n\n - Working knowledge of high-voltage electrical circuits, stored-energy hazards, and safe test system design principles.\n\n#LI-ONSITE #LI-SA1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"a325fe3e-e975-49a8-9a86-7169d279bacd","title":"Senior Experimental Scientist","department":"Science","team":"Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-01T18:02:41.839+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/a325fe3e-e975-49a8-9a86-7169d279bacd","applyUrl":"https://jobs.ashbyhq.com/helion/a325fe3e-e975-49a8-9a86-7169d279bacd/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
Helion is hiring a Senior Experimental Scientist to support and advance the plasma diagnostics capability for Helion’s fusion generators. In this role, you will be a key technical contributor for the design, deployment, calibration, and interpretation of plasma diagnostics across experimental campaigns and testbeds. This is an onsite role that reports directly to our Director of Plasma and Nuclear Science at our Everett, WA office.
You Will:
Lead the design, build, deployment, calibration, and commissioning of plasma diagnostic systems for Helion’s fusion generators, with guidance from senior technical leadership on broader priorities and roadmap alignment
Serve as a go-to technical contributor for a defined diagnostics scope, helping evaluate plasma parameters such as density, temperature, current profiles, and other key performance indicators
Partner cross-functionally with plasma physics, machine operations, controls, mechanical engineering, electrical engineering, and data science teams to align diagnostic capabilities with experimental and operational needs
Develop foundational expertise in pre-ionization plasma diagnostics, establishing best practices and internal methodologies that inform next-generation fusion device development optimized for energy gain and power conversion
Analyze diagnostic data in real time to extract actionable insights about plasma behavior, inform operational tuning, and identify opportunities for performance optimization and system redesign
Contribute to best practices, documentation, and internal methods for plasma diagnostics, helping improve consistency, reliability, and scalability across Helion’s experimental programs
Required Skills:
Ph.D. in physics, electrical engineering, aerospace engineering, or a related discipline, with a focus on plasma science, diagnostics, or high-vacuum instrumentation
3+ years of relevant experience with plasma systems, advanced laboratory environments, high-vacuum systems, pulsed-power systems, or complex experimental hardware
Hands-on experience designing, building, calibrating, troubleshooting, or operating plasma diagnostics such as interferometry, spectroscopy, Langmuir probes, magnetic coils, electrostatic diagnostics, optical diagnostics, or related measurement systems
Demonstrated ability to independently lead complex technical workstreams while collaborating with cross-functional stakeholders across science and engineering teams
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nHelion is hiring a Senior Experimental Scientist to support and advance the plasma diagnostics capability for Helion’s fusion generators. In this role, you will be a key technical contributor for the design, deployment, calibration, and interpretation of plasma diagnostics across experimental campaigns and testbeds. This is an onsite role that reports directly to our Director of Plasma and Nuclear Science at our Everett, WA office.\n\nYou Will:\n\n - Lead the design, build, deployment, calibration, and commissioning of plasma diagnostic systems for Helion’s fusion generators, with guidance from senior technical leadership on broader priorities and roadmap alignment\n\n - Serve as a go-to technical contributor for a defined diagnostics scope, helping evaluate plasma parameters such as density, temperature, current profiles, and other key performance indicators\n\n - Partner cross-functionally with plasma physics, machine operations, controls, mechanical engineering, electrical engineering, and data science teams to align diagnostic capabilities with experimental and operational needs\n\n - Develop foundational expertise in pre-ionization plasma diagnostics, establishing best practices and internal methodologies that inform next-generation fusion device development optimized for energy gain and power conversion\n\n - Analyze diagnostic data in real time to extract actionable insights about plasma behavior, inform operational tuning, and identify opportunities for performance optimization and system redesign\n\n - Contribute to best practices, documentation, and internal methods for plasma diagnostics, helping improve consistency, reliability, and scalability across Helion’s experimental programs\n\nRequired Skills:\n\n - Ph.D. in physics, electrical engineering, aerospace engineering, or a related discipline, with a focus on plasma science, diagnostics, or high-vacuum instrumentation\n\n - 3+ years of relevant experience with plasma systems, advanced laboratory environments, high-vacuum systems, pulsed-power systems, or complex experimental hardware\n\n - Hands-on experience designing, building, calibrating, troubleshooting, or operating plasma diagnostics such as interferometry, spectroscopy, Langmuir probes, magnetic coils, electrostatic diagnostics, optical diagnostics, or related measurement systems\n\n - Demonstrated ability to independently lead complex technical workstreams while collaborating with cross-functional stakeholders across science and engineering teams\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"a45f7359-1915-4646-b593-4d0397d5aa6f","title":"Principal Nuclear Materials Engineer","department":"Material Science","team":"Material Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-10-01T21:38:21.550+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/a45f7359-1915-4646-b593-4d0397d5aa6f","applyUrl":"https://jobs.ashbyhq.com/helion/a45f7359-1915-4646-b593-4d0397d5aa6f/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will play a key role in developing designs and materials suited for high-radiation environments, providing analysis and guidance to engineers on the behavior and performance of a wide range of materials under radiation exposure. In this onsite role, based at our Everett, WA office, you will report to the Director of Materials Science and collaborate closely with cross-functional teams to advance Helion’s mission.
You Will:
Advise engineering design decisions based on radiation effects (due to neutrons) on materials used within the radiation shield vault, e.g., metals used in magnet coils, dielectrics used for structure, and ceramics
Partner with neutronics engineers to predict dpa, analyze, model, and predict macroscopic effects on material properties including thermal conductivity, electrical resistivity, and mechanical strength. Assess system-level radiation risk
Oversee testing campaigns to quantify impact of radiation on material properties
Lead strategic projects to expand capabilities
Perform literature reviews on radiation effects on materials of interest and distill the information into summaries for non-nuclear engineers
Operate in an environment with obstacles and changing requirements. Balance risks without compromising the delivery
Partner with other internal Helion teams, external vendors, national laboratories, and universities to gather the required capabilities. Develop your network and represent Helion at technical meetings and conferences
Required Skills:
A professional understanding of radiation effects on materials, typically demonstrated by a degree in nuclear engineering, materials science, physics, or related discipline and 15+ years of hands-on work
15+ years of experience handling radioactive material
8+ years of experience working on non-aqueous corrosion and environmentally assisted degradation mechanisms (e.g., stress corrosion cracking, creep, accelerated fatigue)
8+ years of experience working on neutron interactions leading to e.g., material transmutation or helium bubble generation
8+ years of experience performing data analysis with a common coding language (Python, MATLAB, C++), data presentation, technical communication, and writing
Data presentation should include rigorous consideration of uncertainty and statistics
#LI-TM1 #LI-Onsite
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing: \n\nYou will play a key role in developing designs and materials suited for high-radiation environments, providing analysis and guidance to engineers on the behavior and performance of a wide range of materials under radiation exposure. In this onsite role, based at our Everett, WA office, you will report to the Director of Materials Science and collaborate closely with cross-functional teams to advance Helion’s mission.\n\nYou Will: \n\n - Advise engineering design decisions based on radiation effects (due to neutrons) on materials used within the radiation shield vault, e.g., metals used in magnet coils, dielectrics used for structure, and ceramics\n\n - Partner with neutronics engineers to predict dpa, analyze, model, and predict macroscopic effects on material properties including thermal conductivity, electrical resistivity, and mechanical strength. Assess system-level radiation risk\n\n - Oversee testing campaigns to quantify impact of radiation on material properties\n\n - Lead strategic projects to expand capabilities\n\n - Perform literature reviews on radiation effects on materials of interest and distill the information into summaries for non-nuclear engineers\n\n - Operate in an environment with obstacles and changing requirements. Balance risks without compromising the delivery\n\n - Partner with other internal Helion teams, external vendors, national laboratories, and universities to gather the required capabilities. Develop your network and represent Helion at technical meetings and conferences\n\nRequired Skills:\n\n - A professional understanding of radiation effects on materials, typically demonstrated by a degree in nuclear engineering, materials science, physics, or related discipline and 15+ years of hands-on work\n\n - 15+ years of experience handling radioactive material\n\n - 8+ years of experience working on non-aqueous corrosion and environmentally assisted degradation mechanisms (e.g., stress corrosion cracking, creep, accelerated fatigue)\n\n - 8+ years of experience working on neutron interactions leading to e.g., material transmutation or helium bubble generation\n\n - 8+ years of experience performing data analysis with a common coding language (Python, MATLAB, C++), data presentation, technical communication, and writing\n\n - Data presentation should include rigorous consideration of uncertainty and statistics\n\n#LI-TM1 #LI-Onsite \n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"a54af2f6-88e0-4e42-902b-478ddb658233","title":"Build Engineer","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-01-30T22:15:23.715+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/a54af2f6-88e0-4e42-902b-478ddb658233","applyUrl":"https://jobs.ashbyhq.com/helion/a54af2f6-88e0-4e42-902b-478ddb658233/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
Helion is hiring a Build Engineer to drive the execution of first-of-a-kind fusion generator assemblies. You will get to own the manufacturing, assembly, and deployment of subsystems for integrated development testbeds and fusion generators. You will work closely with design engineering and production to ensure manufacturability is represented at every stage of the design process. You will report to a Mechanical Engineering Manager, and this is an onsite role located at our Everett, WA office.
You will:
Own the build and assembly definition and execution for generator subsystems - may include large structures, moving mechanical assemblies, power transmission, vacuum systems, electromagnets, high-voltage capacitor systems, low-voltage harnessing, or radiation shielding
Author work instructions for technician teams to support both nominal builds and nonconformance resolution
Design and manufacture tooling to enable efficient assembly and installation of generator subsystems
Collaborate with production, integration, and engineering teams to develop prototypes and manufacturing demonstrators
Drive excellence in configuration management, delivered hardware quality, and pace of execution
Be an expert in the lifecycle of a part, from purchase to final assembly, to continually improve low-volume (<1000 piece parts) build processes
Required Skills:
Bachelor’s degree in engineering or related field
2+ years of professional experience in manufacturing, assembly, or integration of multidisciplinary hardware
Hands-on experience across multiple engineering disciplines such as mechanical, electrical, and fluids
Experience working within CAD software to make models and drawings (e.g. NX, Solidworks)
Demonstrated end-to-end ownership of a build
Effective technical communication across functional and organizational levels
#LI-Onsite
#LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing: \n\nHelion is hiring a Build Engineer to drive the execution of first-of-a-kind fusion generator assemblies. You will get to own the manufacturing, assembly, and deployment of subsystems for integrated development testbeds and fusion generators. You will work closely with design engineering and production to ensure manufacturability is represented at every stage of the design process. You will report to a Mechanical Engineering Manager, and this is an onsite role located at our Everett, WA office.\n\nYou will: \n\n - Own the build and assembly definition and execution for generator subsystems - may include large structures, moving mechanical assemblies, power transmission, vacuum systems, electromagnets, high-voltage capacitor systems, low-voltage harnessing, or radiation shielding\n\n - Author work instructions for technician teams to support both nominal builds and nonconformance resolution\n\n - Design and manufacture tooling to enable efficient assembly and installation of generator subsystems\n\n - Collaborate with production, integration, and engineering teams to develop prototypes and manufacturing demonstrators\n\n - Drive excellence in configuration management, delivered hardware quality, and pace of execution\n\n - Be an expert in the lifecycle of a part, from purchase to final assembly, to continually improve low-volume (<1000 piece parts) build processes\n\nRequired Skills: \n\n - Bachelor’s degree in engineering or related field\n\n - 2+ years of professional experience in manufacturing, assembly, or integration of multidisciplinary hardware\n\n - Hands-on experience across multiple engineering disciplines such as mechanical, electrical, and fluids\n\n - Experience working within CAD software to make models and drawings (e.g. NX, Solidworks)\n\n - Demonstrated end-to-end ownership of a build\n\n - Effective technical communication across functional and organizational levels\n\n \n\n#LI-Onsite\n\n#LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"a550a051-379d-41ec-b3b8-8e13786ac3e5","title":"Manager, Supplier Development Engineer","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-12-19T18:56:37.657+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/a550a051-379d-41ec-b3b8-8e13786ac3e5","applyUrl":"https://jobs.ashbyhq.com/helion/a550a051-379d-41ec-b3b8-8e13786ac3e5/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
As the Manager of Supplier Development Engineering, you will lead the strategy, execution, and continuous improvement of Helion’s supplier readiness, supplier quality, and supplier technical capability as we scale from prototype builds to high-volume manufacturing for fusion generator production. You will manage a team of Supplier Development Engineers and partner closely with design engineering, manufacturing, supply chain, and operations to ensure suppliers can meet Helion’s technical, quality, cost, and delivery requirements. You will drive supplier performance, develop long-term manufacturing capability, and build a resilient, high-quality supply chain that accelerates Helion's mission of delivering clean fusion electricity. This is an onsite role that reports directly to the Senior Manager of Mechanical Engineering at our Everett, WA office.
You Will:
Manage, coach, and grow a high-performing team of Supplier Development Engineers while setting priorities, resource plans, and execution frameworks to support major program milestones
Develop and implement Helion’s supplier development strategy to strengthen supplier technical capability and readiness
Collaborate with engineering teams to understand part and subsystem requirements and translate them into supplier manufacturing and quality expectations
Lead supplier selection, capability assessments, and sourcing decisions in partnership with supply chain teams
Evaluate supplier manufacturing processes, quality systems, capacity, and scalability against Helion’s requirements
Oversee deployment of PPAP, APQP, FAI, control plans, and other qualification processes across critical suppliers
Drive systematic root cause investigations, corrective actions, and continuous improvement for supplier nonconformances
Use data, metrics, and supplier performance dashboards to guide improvements and long-term strategic decisions
Guide suppliers through prototype builds, engineering validation, pilot production, and scaling to high-volume output
Ensure supplier documentation, inspection plans, and verification methods meet Helion’s engineering and regulatory standards
Partner with manufacturing engineering to introduce high-volume production methods and refine manufacturability
Develop long-term supplier capability plans that reduce risk, accelerate production timelines, and incorporate emerging manufacturing technologies
Required Skills:
Bachelor's degree in Engineering, Material Science or a related field
7+ years of experience in supplier development, supplier quality, or manufacturing engineering, including direct experience working with and developing suppliers
3+ years of experience leading engineering teams or technical programs
Strong background in mechanical and electrical manufacturing processes (such as machining, electromechanical assembly, PCBA fabrication, Silicon device manufacturing, and high-precision component manufacturing)
Deep knowledge of supplier quality methodologies (PPAP, APQP, FAI, control plans, SPC, DOE, Six Sigma)
Experience working within quality systems such as ISO 9001, AS9100, or IATF 16949
Assess ability to assess supplier capability, identify manufacturing risks, and lead effective corrective action
Ability to travel up to 25% to support supplier audits, development, and ongoing supplier performance
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing: \n\nAs the Manager of Supplier Development Engineering, you will lead the strategy, execution, and continuous improvement of Helion’s supplier readiness, supplier quality, and supplier technical capability as we scale from prototype builds to high-volume manufacturing for fusion generator production. You will manage a team of Supplier Development Engineers and partner closely with design engineering, manufacturing, supply chain, and operations to ensure suppliers can meet Helion’s technical, quality, cost, and delivery requirements. You will drive supplier performance, develop long-term manufacturing capability, and build a resilient, high-quality supply chain that accelerates Helion's mission of delivering clean fusion electricity. This is an onsite role that reports directly to the Senior Manager of Mechanical Engineering at our Everett, WA office.\n\nYou Will: \n\n - Manage, coach, and grow a high-performing team of Supplier Development Engineers while setting priorities, resource plans, and execution frameworks to support major program milestones \n\n - Develop and implement Helion’s supplier development strategy to strengthen supplier technical capability and readiness \n\n - Collaborate with engineering teams to understand part and subsystem requirements and translate them into supplier manufacturing and quality expectations \n\n - Lead supplier selection, capability assessments, and sourcing decisions in partnership with supply chain teams \n\n - Evaluate supplier manufacturing processes, quality systems, capacity, and scalability against Helion’s requirements \n\n - Oversee deployment of PPAP, APQP, FAI, control plans, and other qualification processes across critical suppliers \n\n - Drive systematic root cause investigations, corrective actions, and continuous improvement for supplier nonconformances \n\n - Use data, metrics, and supplier performance dashboards to guide improvements and long-term strategic decisions \n\n - Guide suppliers through prototype builds, engineering validation, pilot production, and scaling to high-volume output \n\n - Ensure supplier documentation, inspection plans, and verification methods meet Helion’s engineering and regulatory standards \n\n - Partner with manufacturing engineering to introduce high-volume production methods and refine manufacturability \n\n - Develop long-term supplier capability plans that reduce risk, accelerate production timelines, and incorporate emerging manufacturing technologies \n\nRequired Skills: \n\n - Bachelor's degree in Engineering, Material Science or a related field\n\n - 7+ years of experience in supplier development, supplier quality, or manufacturing engineering, including direct experience working with and developing suppliers \n\n - 3+ years of experience leading engineering teams or technical programs \n\n - Strong background in mechanical and electrical manufacturing processes (such as machining, electromechanical assembly, PCBA fabrication, Silicon device manufacturing, and high-precision component manufacturing)\n\n - Deep knowledge of supplier quality methodologies (PPAP, APQP, FAI, control plans, SPC, DOE, Six Sigma) \n\n - Experience working within quality systems such as ISO 9001, AS9100, or IATF 16949 \n\n - Assess ability to assess supplier capability, identify manufacturing risks, and lead effective corrective action \n\n - Ability to travel up to 25% to support supplier audits, development, and ongoing supplier performance \n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"a600ee86-9fb0-4520-9d11-7b96ffe2da29","title":"Technical Program Manager, Orion - Reporting to the CTO","department":"Technology","team":"Technology","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-08T21:04:16.360+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/a600ee86-9fb0-4520-9d11-7b96ffe2da29","applyUrl":"https://jobs.ashbyhq.com/helion/a600ee86-9fb0-4520-9d11-7b96ffe2da29/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
Technical Program Manager, Orion - Reporting to the CTO
Coordinate Orion execution across science, engineering, manufacturing, supply chain, integration, commissioning, and operations readiness.
Help subunit owners assemble and maintain an integrated Orion-level plan, while making clear that each owner remains responsible for their own schedule, scope, and commitments.
Identify cross-team dependencies, interface risks, schedule conflicts, and unresolved ownership gaps.
Ensure major technical decisions are surfaced quickly, framed clearly, and escalated to the right leader or executive when needed.
Highlight technical tradeoffs involving performance, schedule, risk, manufacturability, cost, reliability, and operability.
Drive the cadence for Orion coordination meetings, technical reviews, dependency reviews, and executive decision forums.
Maintain visibility into the plant-level critical path by integrating inputs from responsible owners, not by replacing their ownership of detailed schedules.
Track major risks, blockers, open decisions, and readiness gaps across the Orion program.
Ensure decisions and changes are communicated clearly to all affected teams.
Partner with systems engineering, integration engineering, production scheduling, and technical leads to connect their work into one coherent Orion execution picture.
Provide a concise, accurate view of Orion status, including what is blocked, what decisions are needed, where risks are increasing, and where executive help is required.
Build the TPM function for Orion as the program scales, including standards for dependency tracking, decision logs, risk reviews, readiness gates, and executive reporting.
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nTechnical Program Manager, Orion - Reporting to the CTO\n\n - Coordinate Orion execution across science, engineering, manufacturing, supply chain, integration, commissioning, and operations readiness.\n\n - Help subunit owners assemble and maintain an integrated Orion-level plan, while making clear that each owner remains responsible for their own schedule, scope, and commitments.\n\n - Identify cross-team dependencies, interface risks, schedule conflicts, and unresolved ownership gaps.\n\n - Ensure major technical decisions are surfaced quickly, framed clearly, and escalated to the right leader or executive when needed.\n\n - Highlight technical tradeoffs involving performance, schedule, risk, manufacturability, cost, reliability, and operability.\n\n - Drive the cadence for Orion coordination meetings, technical reviews, dependency reviews, and executive decision forums.\n\n - Maintain visibility into the plant-level critical path by integrating inputs from responsible owners, not by replacing their ownership of detailed schedules.\n\n - Track major risks, blockers, open decisions, and readiness gaps across the Orion program.\n\n - Ensure decisions and changes are communicated clearly to all affected teams.\n\n - Partner with systems engineering, integration engineering, production scheduling, and technical leads to connect their work into one coherent Orion execution picture.\n\n - Provide a concise, accurate view of Orion status, including what is blocked, what decisions are needed, where risks are increasing, and where executive help is required.\n\n - Build the TPM function for Orion as the program scales, including standards for dependency tracking, decision logs, risk reviews, readiness gates, and executive reporting.\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"a68ac2cc-9d87-484b-a417-4893ce95b515","title":"Senior Computational Plasma Scientist - Kinetic / PIC Modeling","department":"Science","team":"Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-05-28T22:56:07.665+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/a68ac2cc-9d87-484b-a417-4893ce95b515","applyUrl":"https://jobs.ashbyhq.com/helion/a68ac2cc-9d87-484b-a417-4893ce95b515/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
Helion is hiring a Senior Computational Plasma Scientist to run and interpret kinetic / Particle-in-Cell simulations that help advance our understanding of plasma behavior in Helion’s fusion generators. In this role, you will use tools such as WarpX or similar PIC codes to design simulation campaigns, analyze large-scale field and particle outputs, and compare results against experimental data from Helion’s operating machines. You will focus on turning kinetic simulations into actionable physics insight for topics such as plasma startup, RF/plasma interactions, particle transport, sheath behavior, and other effects that may not be fully captured by fluid or MHD models. This position reports to the Manager of Computational Science at our Everett, WA office and plays a key role in advancing Helion’s path toward fusion electricity.
You Will:
Run kinetic / Particle-in-Cell simulations using WarpX or similar PIC codes to study plasma behavior relevant to Helion’s FRC systems
Develop simulation input decks, PICMI scripts, parameter scans, and repeatable workflows for targeted kinetic modeling studies
Analyze field, particle, and diagnostic outputs from large-scale PIC simulations using Python or similar scientific computing tools
Compare kinetic simulation results against experimental measurements and translate findings into clear physical insight
Partner with experimental scientists, diagnostics engineers, RF engineers, and MHD modelers to determine where PIC modeling can add the most value
Build analysis scripts, visualizations, and reduced data products that make complex simulation results usable across teams
Required Skills:
PhD in Plasma Physics, Applied Physics, Computational Physics, Nuclear Engineering, Aerospace Engineering, or a related technical field
5+ years of experience running, analyzing, or interpreting kinetic / Particle-in-Cell plasma simulations in academic, national lab, or industry settings
Strong understanding of kinetic plasma physics and Particle-in-Cell modeling methods
Experience running and interpreting PIC simulations using WarpX, OSIRIS, VPIC, EPOCH, Smilei, LSP, FBPIC, or comparable codes
Experience designing simulation campaigns, including input setup, boundary conditions, parameter scans, convergence checks, and validation workflows
Strong scientific programming skills in Python, MATLAB, Julia, C++, Fortran, or similar languages for simulation analysis and visualization
Ability to communicate complex simulation results clearly to computational, experimental, and cross-functional audiences
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\nWhat You Will Be Doing:\nHelion is hiring a Senior Computational Plasma Scientist to run and interpret kinetic / Particle-in-Cell simulations that help advance our understanding of plasma behavior in Helion’s fusion generators. In this role, you will use tools such as WarpX or similar PIC codes to design simulation campaigns, analyze large-scale field and particle outputs, and compare results against experimental data from Helion’s operating machines. You will focus on turning kinetic simulations into actionable physics insight for topics such as plasma startup, RF/plasma interactions, particle transport, sheath behavior, and other effects that may not be fully captured by fluid or MHD models. This position reports to the Manager of Computational Science at our Everett, WA office and plays a key role in advancing Helion’s path toward fusion electricity.\n\n\n\nYou Will:\n\n - Run kinetic / Particle-in-Cell simulations using WarpX or similar PIC codes to study plasma behavior relevant to Helion’s FRC systems\n\n - Develop simulation input decks, PICMI scripts, parameter scans, and repeatable workflows for targeted kinetic modeling studies\n\n - Analyze field, particle, and diagnostic outputs from large-scale PIC simulations using Python or similar scientific computing tools\n\n - Compare kinetic simulation results against experimental measurements and translate findings into clear physical insight\n\n - Partner with experimental scientists, diagnostics engineers, RF engineers, and MHD modelers to determine where PIC modeling can add the most value\n\n - Build analysis scripts, visualizations, and reduced data products that make complex simulation results usable across teams\n\n\n\nRequired Skills:\n\n - PhD in Plasma Physics, Applied Physics, Computational Physics, Nuclear Engineering, Aerospace Engineering, or a related technical field\n\n - 5+ years of experience running, analyzing, or interpreting kinetic / Particle-in-Cell plasma simulations in academic, national lab, or industry settings\n\n - Strong understanding of kinetic plasma physics and Particle-in-Cell modeling methods\n\n - Experience running and interpreting PIC simulations using WarpX, OSIRIS, VPIC, EPOCH, Smilei, LSP, FBPIC, or comparable codes\n\n - Experience designing simulation campaigns, including input setup, boundary conditions, parameter scans, convergence checks, and validation workflows\n\n - Strong scientific programming skills in Python, MATLAB, Julia, C++, Fortran, or similar languages for simulation analysis and visualization\n\n - Ability to communicate complex simulation results clearly to computational, experimental, and cross-functional audiences\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"a9a2725e-24e6-4338-b0cf-828d7a6158f5","title":"Build the Future with Us! | Helion Talent Community","department":"All Departments","team":"All Departments","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-01-28T22:05:47.201+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/a9a2725e-24e6-4338-b0cf-828d7a6158f5","applyUrl":"https://jobs.ashbyhq.com/helion/a9a2725e-24e6-4338-b0cf-828d7a6158f5/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
Join The Helion Talent Community
Even if you don’t see a role that aligns with what you’re looking for, we want to hear from you!
If the following resonates with you, we encourage you to apply:
Motivated to solve hard problems and deliver on big missions
Helion's values align with how you want to work
Have experience rapidly scaling manufacturing assembly lines and processes
Built technologies in aerospace, electrical, or mechanical engineering
Have publications and research experience in plasma-related fields
Built programs to drive the business forward and while enabling teams to deliver on new technologies
Determined to drive global change in the clean energy landscape
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nJoin The Helion Talent Community \n\nEven if you don’t see a role that aligns with what you’re looking for, we want to hear from you! \n\nIf the following resonates with you, we encourage you to apply: \n\n - Motivated to solve hard problems and deliver on big missions \n\n - Helion's values align with how you want to work \n\n - Have experience rapidly scaling manufacturing assembly lines and processes \n\n - Built technologies in aerospace, electrical, or mechanical engineering \n\n - Have publications and research experience in plasma-related fields \n\n - Built programs to drive the business forward and while enabling teams to deliver on new technologies\n\n - Determined to drive global change in the clean energy landscape \n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"ad92a1bb-cc5e-462e-b41e-4fda4ac48a21","title":"Senior Multiphysics Modeling Engineer","department":"Material Science","team":"Material Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-03-11T00:48:50.346+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/ad92a1bb-cc5e-462e-b41e-4fda4ac48a21","applyUrl":"https://jobs.ashbyhq.com/helion/ad92a1bb-cc5e-462e-b41e-4fda4ac48a21/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
We are seeking a Senior Multiphysics Modeling Engineer to develop and validate coupled thermal–mechanical–fluid models for Helion's fusion hardware. You will bridge simulation and experimental data to inform material selection, component design, and operating limits in one of the most demanding engineered environments in the world.
This role is highly cross-functional, partnering with materials scientists, test engineers, and mechanical designers to ensure modeling directly drives hardware decisions. You will report to our Materials Manager, onsite in Everett, WA.
You Will:
Develop and maintain multiphysics models (primarily in MOOSE) for high-temperature ceramic and metallic components, plasma- and power-facing structures, and pulsed-load systems.
Simulate coupled thermal, structural, and electromagnetic behavior under rapid cyclic loading, high heat flux, and large temperature gradients, and implement and calibrate constitutive models for fatigue-dominated damage, fracture, and other relevant degradation mechanisms in extreme environments.
Execute rigorous verification and validation (V&V) by performing convergence studies, co-designing calibration and validation experiments with materials and test engineers, and systematically comparing model predictions to experimental results to quantify discrepancies and refine models, properties, and test plans to close the simulation–experiment gap.
Apply uncertainty quantification and sensitivity analysis to support life predictions, design margins, and operating envelope definition.
Translate modeling results into actionable design guidance for materials, joints, components, and inspection strategies.
Use simulation results to help establish material allowables and operating envelopes for high-temperature metallic and ceramic components.
Run large-scale simulations in HPC environments and build reproducible, version-controlled modeling workflows.
Help define a modeling roadmap and standards for key components and failure modes, including expectations for V&V, documentation, and workflow reproducibility as the modeling function grows.
Required Skills:
PhD (or MS with significant experience) in Mechanical Engineering, Nuclear Engineering, Materials Science, Applied Physics, or related field with a computational focus.
5+ years of experience in multiphysics finite element or finite volume modeling of coupled thermal–mechanical systems including experience with irradiated materials modeling and materials in severely degrading environments (e.g., plasma, fusion/fission, high-flux/high-dose environments, etc.)
Proficiency with at least one advanced multiphysics platform (e.g., MOOSE, Abaqus, COMSOL, ANSYS, BISON, OpenMC, MCNP), with willingness to work in MOOSE.
Demonstrated experience with verification and validation against experimental data.
Experience running simulations in HPC environments (parallel computing, job scheduling).
Programming/scripting skills (e.g., Python, C++).
Demonstrated ability to clearly communicate model assumptions, limitations, and uncertainties to non-modelers and to work effectively with cross-functional teams.
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nWe are seeking a Senior Multiphysics Modeling Engineer to develop and validate coupled thermal–mechanical–fluid models for Helion's fusion hardware. You will bridge simulation and experimental data to inform material selection, component design, and operating limits in one of the most demanding engineered environments in the world.\n\nThis role is highly cross-functional, partnering with materials scientists, test engineers, and mechanical designers to ensure modeling directly drives hardware decisions. You will report to our Materials Manager, onsite in Everett, WA.\n\nYou Will:\n\n - Develop and maintain multiphysics models (primarily in MOOSE) for high-temperature ceramic and metallic components, plasma- and power-facing structures, and pulsed-load systems.\n\n - Simulate coupled thermal, structural, and electromagnetic behavior under rapid cyclic loading, high heat flux, and large temperature gradients, and implement and calibrate constitutive models for fatigue-dominated damage, fracture, and other relevant degradation mechanisms in extreme environments.\n\n - Execute rigorous verification and validation (V&V) by performing convergence studies, co-designing calibration and validation experiments with materials and test engineers, and systematically comparing model predictions to experimental results to quantify discrepancies and refine models, properties, and test plans to close the simulation–experiment gap.\n\n - Apply uncertainty quantification and sensitivity analysis to support life predictions, design margins, and operating envelope definition.\n\n - Translate modeling results into actionable design guidance for materials, joints, components, and inspection strategies.\n\n - Use simulation results to help establish material allowables and operating envelopes for high-temperature metallic and ceramic components.\n\n - Run large-scale simulations in HPC environments and build reproducible, version-controlled modeling workflows.\n\n - Help define a modeling roadmap and standards for key components and failure modes, including expectations for V&V, documentation, and workflow reproducibility as the modeling function grows.\n\nRequired Skills:\n\n - PhD (or MS with significant experience) in Mechanical Engineering, Nuclear Engineering, Materials Science, Applied Physics, or related field with a computational focus.\n\n - 5+ years of experience in multiphysics finite element or finite volume modeling of coupled thermal–mechanical systems including experience with irradiated materials modeling and materials in severely degrading environments (e.g., plasma, fusion/fission, high-flux/high-dose environments, etc.)\n\n - Proficiency with at least one advanced multiphysics platform (e.g., MOOSE, Abaqus, COMSOL, ANSYS, BISON, OpenMC, MCNP), with willingness to work in MOOSE.\n\n - Demonstrated experience with verification and validation against experimental data.\n\n - Experience running simulations in HPC environments (parallel computing, job scheduling).\n\n - Programming/scripting skills (e.g., Python, C++).\n\n - Demonstrated ability to clearly communicate model assumptions, limitations, and uncertainties to non-modelers and to work effectively with cross-functional teams.\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"b06b8b72-648a-473f-a0b5-1f30983668d9","title":"Senior Manager of People Operations","department":"People","team":"People","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-05-28T22:22:14.217+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/b06b8b72-648a-473f-a0b5-1f30983668d9","applyUrl":"https://jobs.ashbyhq.com/helion/b06b8b72-648a-473f-a0b5-1f30983668d9/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will lead the team responsible for building and scaling people programs that power our mission. From onboarding, offboarding, and employee relations, you will build programs and processes that foster an engaging, high-performing, and people-centered culture. You will partner closely with leaders and employees to ensure our People programs are thoughtful, scalable, and aligned with Helion’s mission and growth. This is an onsite role that reports directly to Senior Director of People Operations and Talent at our Everett, WA office.
You Will:
Lead and develop a team of People professionals focused on employee relations, employee experience, onboarding/offboarding, and talent development initiatives
Serve as a trusted advisor to managers and employees by guiding employee relations matters with empathy, sound judgment, and a solutions-oriented approach
Own and continuously improve the end-to-end employee experience, ensuring employees feel supported, engaged, and connected throughout their journey at Helion
Design and scale onboarding and offboarding programs that create a seamless, high-quality experience while reinforcing company culture and operational excellence
Partner cross-functionally with leaders to drive engagement, performance management, recognition, and feedback programs that strengthen culture and accountability
Develop scalable people processes, systems, and workflows that improve operational efficiency, employee support, and organizational effectiveness
Required Skills:
10+ years of experience across People/HR functions, with 3+ years in a leadership role leading teams or major People initiatives
Experience in employee relations, employee experience, onboarding/offboarding, talent development, and performance management
Experience building and improving People processes, systems, and workflows with a focus on scalability, efficiency, and employee impact
Experience designing and scaling employee programs in high-growth, fast-paced, or startup environments
Strong program management and cross-functional partnership skills, with the ability to influence stakeholders and drive organizational alignment
Strong analytical and problem-solving skills, with experience using employee feedback and workforce data to improve programs and decision-making
#LI-Onsite #LI-IB1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\nWhat You Will Be Doing:\n\nYou will lead the team responsible for building and scaling people programs that power our mission. From onboarding, offboarding, and employee relations, you will build programs and processes that foster an engaging, high-performing, and people-centered culture. You will partner closely with leaders and employees to ensure our People programs are thoughtful, scalable, and aligned with Helion’s mission and growth. This is an onsite role that reports directly to Senior Director of People Operations and Talent at our Everett, WA office.\n\n\n\nYou Will:\n\n - Lead and develop a team of People professionals focused on employee relations, employee experience, onboarding/offboarding, and talent development initiatives\n\n - Serve as a trusted advisor to managers and employees by guiding employee relations matters with empathy, sound judgment, and a solutions-oriented approach\n\n - Own and continuously improve the end-to-end employee experience, ensuring employees feel supported, engaged, and connected throughout their journey at Helion\n\n - Design and scale onboarding and offboarding programs that create a seamless, high-quality experience while reinforcing company culture and operational excellence\n\n - Partner cross-functionally with leaders to drive engagement, performance management, recognition, and feedback programs that strengthen culture and accountability\n\n - Develop scalable people processes, systems, and workflows that improve operational efficiency, employee support, and organizational effectiveness\n\n\n\nRequired Skills:\n\n - 10+ years of experience across People/HR functions, with 3+ years in a leadership role leading teams or major People initiatives\n\n - Experience in employee relations, employee experience, onboarding/offboarding, talent development, and performance management\n\n - Experience building and improving People processes, systems, and workflows with a focus on scalability, efficiency, and employee impact\n\n - Experience designing and scaling employee programs in high-growth, fast-paced, or startup environments\n\n - Strong program management and cross-functional partnership skills, with the ability to influence stakeholders and drive organizational alignment\n\n - Strong analytical and problem-solving skills, with experience using employee feedback and workforce data to improve programs and decision-making\n\n#LI-Onsite #LI-IB1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"b1316b77-b691-4f3c-afb2-36d5d2df75c5","title":"Build Reliability Manager","department":"Production","team":"Production","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-16T21:28:25.715+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/b1316b77-b691-4f3c-afb2-36d5d2df75c5","applyUrl":"https://jobs.ashbyhq.com/helion/b1316b77-b691-4f3c-afb2-36d5d2df75c5/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will lead the build reliability efforts for Helion's fusion devices. Your role will focus on identifying and eliminating build risks while also growing a high-performing team of engineers and inspectors. You will establish build standards and partner closely with design, manufacturing, supply chain, and operations teams to ensure those build standards are maintained across the hardware lifecycle. You will report to the Senior Manager of Production, and this is an onsite role located at our Everett, WA office.
You Will:
Grow and mentor a team of build reliability engineers and inspectors
Own build reliability strategy across Helion's fusion devices, from early design through final assembly and commissioning
Drive Design for Reliability, Manufacturability, and Assembly practices into hardware development
Partner with design engineering to influence architectures and interfaces to improve build success and repeatability
Identify, prioritize, and mitigate build risks through structured analyses such as FMEA, tolerance analysis, and failure investigations
Lead containments, root cause analysis, and corrective and preventative actions of build issues and nonconformances
Required Skills:
Bachelor's degree in Engineering
5+ years of build reliability engineering experience, including 2+ years in an engineering management role
Demonstrated ability to hire and grow engineers and inspectors, providing impactful career development
Experience leading multidisciplinary teams with full-scope project ownership
Proven ability to manage complex engineering projects with schedule accountability
Hands-on exposure to multiple engineering disciplines such as mechanical, manufacturing, and electrical
Ability to apply engineering first-principles and structured problem-solving to technical challenges
#LI-Onsite
#LI-TS1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\nWhat You Will Be Doing:\n\nYou will lead the build reliability efforts for Helion's fusion devices. Your role will focus on identifying and eliminating build risks while also growing a high-performing team of engineers and inspectors. You will establish build standards and partner closely with design, manufacturing, supply chain, and operations teams to ensure those build standards are maintained across the hardware lifecycle. You will report to the Senior Manager of Production, and this is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Grow and mentor a team of build reliability engineers and inspectors\n\n - Own build reliability strategy across Helion's fusion devices, from early design through final assembly and commissioning\n\n - Drive Design for Reliability, Manufacturability, and Assembly practices into hardware development\n\n - Partner with design engineering to influence architectures and interfaces to improve build success and repeatability\n\n - Identify, prioritize, and mitigate build risks through structured analyses such as FMEA, tolerance analysis, and failure investigations\n\n - Lead containments, root cause analysis, and corrective and preventative actions of build issues and nonconformances\n\nRequired Skills:\n\n - Bachelor's degree in Engineering\n\n - 5+ years of build reliability engineering experience, including 2+ years in an engineering management role\n\n - Demonstrated ability to hire and grow engineers and inspectors, providing impactful career development\n\n - Experience leading multidisciplinary teams with full-scope project ownership\n\n - Proven ability to manage complex engineering projects with schedule accountability\n\n - Hands-on exposure to multiple engineering disciplines such as mechanical, manufacturing, and electrical\n\n - Ability to apply engineering first-principles and structured problem-solving to technical challenges\n\n#LI-Onsite\n\n#LI-TS1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"b4efeb48-dbd7-42f3-b6a9-4f97c2074bf3","title":"Supplier Development Engineer, Electrical","department":"Electrical Engineering","team":"Electrical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-12-19T19:52:13.398+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/b4efeb48-dbd7-42f3-b6a9-4f97c2074bf3","applyUrl":"https://jobs.ashbyhq.com/helion/b4efeb48-dbd7-42f3-b6a9-4f97c2074bf3/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
We are hiring a Supplier Development Engineer to work with suppliers to make parts for fusion generators. You will solve technical problems, develop our supplier's quality systems, and accelerate Helion's transition from rapid prototyping to mass generator manufacturing, thus delivering on Helion's mission of providing clean electricity to the planet. This role requires an onsite presence and you will report to our Senior Manager of Electrical Engineering at our Everett, WA office.
You Will:
Collaborate with design engineers to gain an in-depth knowledge of part, assembly, and sub-system design intent
Assess suppliers' manufacturing processes and quality systems to source parts, in partnership with procurement team
Support product ramp from new product introduction through to high-volume manufacturing
Define supplier technical and quality specifications based on engineering and program requirements
Implement and monitor the production part approval process (PPAP) with selected suppliers to promote rate production
Ensure suppliers understand requirements for document submissions (e.g., first article inspection reports, quality documentation)
Develop and approve process controls for important characteristics
Recommend technical product improvements to reduce risk and potential defect opportunities
Analyze supplier quality and delivery metrics to identify trends and systemic performance gaps to improve plans
Coordinate between suppliers, engineers, buyers, and production to resolve supplier quality issues
Guide supplier corrective actions associated with escapes or containments identified in production or the supply chain
Improve the supply chain
Help build the supplier quality program and team at Helion
Help develop receiving inspection and quality standards
Required Skills:
3+ years of engineering, manufacturing, or supply chain experience—including school projects, clubs, or internships—in mechanical or electrical systems
Bachelor's degree or higher in an engineering discipline, or relevant field
Experience managing external suppliers
Knowledge of supplier quality processes (e.g., production part approval process, advanced product quality planning, first article inspection reports)
Knowledge of statistical techniques and methods (e.g., design of experiments, Six Sigma)
Experience with quality systems (ISO 9000 / TS)
Able to travel up to 50% of the time
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nWe are hiring a Supplier Development Engineer to work with suppliers to make parts for fusion generators. You will solve technical problems, develop our supplier's quality systems, and accelerate Helion's transition from rapid prototyping to mass generator manufacturing, thus delivering on Helion's mission of providing clean electricity to the planet. This role requires an onsite presence and you will report to our Senior Manager of Electrical Engineering at our Everett, WA office.\n\nYou Will:\n\n - Collaborate with design engineers to gain an in-depth knowledge of part, assembly, and sub-system design intent\n\n - Assess suppliers' manufacturing processes and quality systems to source parts, in partnership with procurement team\n\n - Support product ramp from new product introduction through to high-volume manufacturing\n\n - Define supplier technical and quality specifications based on engineering and program requirements\n\n - Implement and monitor the production part approval process (PPAP) with selected suppliers to promote rate production\n\n - Ensure suppliers understand requirements for document submissions (e.g., first article inspection reports, quality documentation)\n\n - Develop and approve process controls for important characteristics\n\n - Recommend technical product improvements to reduce risk and potential defect opportunities\n\n - Analyze supplier quality and delivery metrics to identify trends and systemic performance gaps to improve plans\n\n - Coordinate between suppliers, engineers, buyers, and production to resolve supplier quality issues\n\n - Guide supplier corrective actions associated with escapes or containments identified in production or the supply chain\n\n - Improve the supply chain\n\n - Help build the supplier quality program and team at Helion\n\n - Help develop receiving inspection and quality standards\n\nRequired Skills:\n\n - 3+ years of engineering, manufacturing, or supply chain experience—including school projects, clubs, or internships—in mechanical or electrical systems\n\n - Bachelor's degree or higher in an engineering discipline, or relevant field\n\n - Experience managing external suppliers\n\n - Knowledge of supplier quality processes (e.g., production part approval process, advanced product quality planning, first article inspection reports)\n\n - Knowledge of statistical techniques and methods (e.g., design of experiments, Six Sigma)\n\n - Experience with quality systems (ISO 9000 / TS)\n\n - Able to travel up to 50% of the time\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"b5659fa4-aadc-47d0-9746-f58cf8bc51e2","title":"Senior Electrical Systems Engineer","department":"Electrical Engineering","team":"Electrical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-12-19T19:16:44.881+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/b5659fa4-aadc-47d0-9746-f58cf8bc51e2","applyUrl":"https://jobs.ashbyhq.com/helion/b5659fa4-aadc-47d0-9746-f58cf8bc51e2/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
As a Senior Electrical Systems Engineer, you will define the electrical hardware that powers and controls our next-generation fusion machines. You will work at the architecture level to ensure electrical subsystems, including power distribution, controls interfaces, sensors, and communication networks, function together as a coherent and reliable platform. In this role, you will lead architectural decisions, own requirements and interfaces, and drive verification and hardware bring-up. You will work closely with engineering, test, and commissioning teams to translate technical objectives into implementable designs and ensure those designs perform as intended during testing and deployment. This role blends architecture development, requirements ownership, and hands-on hardware work, and is well suited for engineers who enjoy working across disciplines while remaining closely connected to the physical system.
You Will:
Lead the architecture and design of electrical subsystems, ensuring alignment with overall machine requirements and operational goals.
Define, maintain, and own system and subsystem requirements, ensuring clear traceability from top-level objectives to implemented hardware.
Develop, own, and maintain Interface Control Documents (ICDs) that define electrical, controls, and mechanical interfaces between subsystems and suppliers.
Lead verification planning and execution, ensuring requirements have clear verification methods and driving testing activities.
Operate hands-on during hardware bring-up and prototyping, leading efforts to diagnose and resolve issues across electrical hardware, controls systems, and subsystem interfaces.
Drive collaboration across electrical, controls, mechanical, and test teams to ensure designs function correctly within the overall machine.
Own integration of new hardware and subsystems during development and commissioning.
Drive system documentation and engineering processes, including requirements management, design reviews, and integration planning, and mentor junior engineers in these practices.
Required Skills:
Bachelor’s or Master’s degree in Electrical Engineering or a related field.
8+ years of experience in electrical systems engineering, integration, test, or hardware development.
Proven experience leading system or subsystem architecture, including defining electrical subsystems and their interactions.
Proven experience developing and owning technical requirements and Interface Control Documents (ICDs).
Expert ability to read and interpret electrical schematics, wiring diagrams, and interconnect documentation.
Extensive hands-on experience with hardware bring-up, troubleshooting, and root cause analysis using standard lab instrumentation such as oscilloscopes, DMMs, and logic or spectrum analyzers.
Experience applying system safety and reliability methods, including FMEA, FMECA, or fault analysis.
Demonstrated experience driving work across cross-disciplinary engineering teams including electrical, controls, mechanical, and test.
Strong technical documentation and communication skills, including the ability to clearly capture requirements, interfaces, and design decisions and influence cross-functional teams.
Proven experience working with hardware suppliers or external partners to define technical requirements, review deliverables, and drive outcomes.
Desired Skills:
Experience in aerospace, automotive, robotics, energy systems, or other safety-critical, high-reliability industries.
Expertise with large-scale electrical hardware systems, including power distribution, sensing, and controls integration.
Strong knowledge of high-voltage or high-current electrical systems, including grounding, protection, and EMI/EMC considerations.
Experience using and driving adoption of requirements management and PLM tools such as Flow, Jama, DOORS, Teamcenter, or Confluence.
Experience leading or supporting system-level integration testing, including instrumentation, automation, and data analysis.
Familiarity with and application of electrical interconnect systems and harness manufacturing standards such as IPC/WHMA-A-620 or related industry practices.
Demonstrated ability to operate effectively in fast-paced development environments where both engineering rigor and development speed are required.
Demonstrated ownership and leadership of hardware development efforts from concept through deployment, including coordination with suppliers and cross-disciplinary teams.
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\nWhat You Will Be Doing:\n\n\nAs a Senior Electrical Systems Engineer, you will define the electrical hardware that powers and controls our next-generation fusion machines. You will work at the architecture level to ensure electrical subsystems, including power distribution, controls interfaces, sensors, and communication networks, function together as a coherent and reliable platform. In this role, you will lead architectural decisions, own requirements and interfaces, and drive verification and hardware bring-up. You will work closely with engineering, test, and commissioning teams to translate technical objectives into implementable designs and ensure those designs perform as intended during testing and deployment. This role blends architecture development, requirements ownership, and hands-on hardware work, and is well suited for engineers who enjoy working across disciplines while remaining closely connected to the physical system.\n\n\n\nYou Will:\n\n - Lead the architecture and design of electrical subsystems, ensuring alignment with overall machine requirements and operational goals.\n\n - Define, maintain, and own system and subsystem requirements, ensuring clear traceability from top-level objectives to implemented hardware.\n\n - Develop, own, and maintain Interface Control Documents (ICDs) that define electrical, controls, and mechanical interfaces between subsystems and suppliers.\n\n - Lead verification planning and execution, ensuring requirements have clear verification methods and driving testing activities.\n\n - Operate hands-on during hardware bring-up and prototyping, leading efforts to diagnose and resolve issues across electrical hardware, controls systems, and subsystem interfaces.\n\n - Drive collaboration across electrical, controls, mechanical, and test teams to ensure designs function correctly within the overall machine.\n Own integration of new hardware and subsystems during development and commissioning.\n\n - Drive system documentation and engineering processes, including requirements management, design reviews, and integration planning, and mentor junior engineers in these practices.\n \n\nRequired Skills:\n\n - Bachelor’s or Master’s degree in Electrical Engineering or a related field.\n 8+ years of experience in electrical systems engineering, integration, test, or hardware development.\n\n - Proven experience leading system or subsystem architecture, including defining electrical subsystems and their interactions.\n\n - Proven experience developing and owning technical requirements and Interface Control Documents (ICDs).\n\n - Expert ability to read and interpret electrical schematics, wiring diagrams, and interconnect documentation.\n\n - Extensive hands-on experience with hardware bring-up, troubleshooting, and root cause analysis using standard lab instrumentation such as oscilloscopes, DMMs, and logic or spectrum analyzers.\n\n - Experience applying system safety and reliability methods, including FMEA, FMECA, or fault analysis.\n\n - Demonstrated experience driving work across cross-disciplinary engineering teams including electrical, controls, mechanical, and test.\n\n - Strong technical documentation and communication skills, including the ability to clearly capture requirements, interfaces, and design decisions and influence cross-functional teams.\n\n - Proven experience working with hardware suppliers or external partners to define technical requirements, review deliverables, and drive outcomes.\n \n\nDesired Skills:\n\n - Experience in aerospace, automotive, robotics, energy systems, or other safety-critical, high-reliability industries.\n\n - Expertise with large-scale electrical hardware systems, including power distribution, sensing, and controls integration.\n\n - Strong knowledge of high-voltage or high-current electrical systems, including grounding, protection, and EMI/EMC considerations.\n\n - Experience using and driving adoption of requirements management and PLM tools such as Flow, Jama, DOORS, Teamcenter, or Confluence.\n\n - Experience leading or supporting system-level integration testing, including instrumentation, automation, and data analysis.\n\n - Familiarity with and application of electrical interconnect systems and harness manufacturing standards such as IPC/WHMA-A-620 or related industry practices.\n\n - Demonstrated ability to operate effectively in fast-paced development environments where both engineering rigor and development speed are required.\n\n - Demonstrated ownership and leadership of hardware development efforts from concept through deployment, including coordination with suppliers and cross-disciplinary teams.\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"b7654b53-00e4-4141-9e94-1c7ad762196e","title":"Mechanical Engineering Manager, Modules","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-04-03T19:53:16.604+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/b7654b53-00e4-4141-9e94-1c7ad762196e","applyUrl":"https://jobs.ashbyhq.com/helion/b7654b53-00e4-4141-9e94-1c7ad762196e/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will lead the mechanical hardware design efforts for Helion’s fusion devices. Your role will focus on solving complex, high-impact problems that influence system performance, while also growing a high-performing engineering team. You will establish technical standards, drive execution, and shape design processes to increase the speed and quality of innovation. You will report to the Director of Mechanical Engineering and this is an onsite role located at our Everett, WA office.
You Will:
Grow and mentor a team of multidisciplinary mechanical engineers
Oversee design of machine architecture, high-performance pulsed power mechanical systems, structural designs, and thermal management systems
Drive schedule ownership and optimization across the team to accelerate milestones
Lead design, analysis, and manufacturing process improvements to increase reliability, performance, and throughput
Collaborate with Electrical, Research, Science, and Controls teams to derive requirements and meet program goals
Required Skills:
Bachelor’s degree in Engineering
5+ years of engineering experience, including 2+ years in an engineering management role
Demonstrated ability to grow engineers and impact career development
Experience leading multidisciplinary teams with full-scope project ownership
Proven ability to manage complex engineering projects with schedule accountability
Hands-on exposure to multiple engineering disciplines such as mechanical, electrical, and fluids
Ability to apply engineering first-principles and structured problem-solving to technical challenges
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing: \n\nYou will lead the mechanical hardware design efforts for Helion’s fusion devices. Your role will focus on solving complex, high-impact problems that influence system performance, while also growing a high-performing engineering team. You will establish technical standards, drive execution, and shape design processes to increase the speed and quality of innovation. You will report to the Director of Mechanical Engineering and this is an onsite role located at our Everett, WA office.\n\nYou Will: \n\n - Grow and mentor a team of multidisciplinary mechanical engineers\n\n - Oversee design of machine architecture, high-performance pulsed power mechanical systems, structural designs, and thermal management systems\n\n - Drive schedule ownership and optimization across the team to accelerate milestones\n\n - Lead design, analysis, and manufacturing process improvements to increase reliability, performance, and throughput\n\n - Collaborate with Electrical, Research, Science, and Controls teams to derive requirements and meet program goals\n\nRequired Skills: \n\n - Bachelor’s degree in Engineering\n\n - 5+ years of engineering experience, including 2+ years in an engineering management role\n\n - Demonstrated ability to grow engineers and impact career development\n\n - Experience leading multidisciplinary teams with full-scope project ownership\n\n - Proven ability to manage complex engineering projects with schedule accountability\n\n - Hands-on exposure to multiple engineering disciplines such as mechanical, electrical, and fluids\n\n - Ability to apply engineering first-principles and structured problem-solving to technical challenges\n\n\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"b7feaec3-e0af-4e67-a8ef-1707507f92b1","title":"EHS Specialist (Swing Shift)","department":"Environmental Health & Safety","team":"Environmental Health & Safety","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-05-01T22:27:00.370+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/b7feaec3-e0af-4e67-a8ef-1707507f92b1","applyUrl":"https://jobs.ashbyhq.com/helion/b7feaec3-e0af-4e67-a8ef-1707507f92b1/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
Swing Shift Details: 5 days per week (M-F) | 3:00 PM – 11:00 PM
What You Will Be Doing
As an EHS Specialist at Helion, you will be part of a growing team dedicated to ensuring safety excellence across production, commissioning, and 24/7 operational activities. You’ll provide daily on-site safety support, coach teams in the field, and drive continuous improvement in Helion’s safety culture. This is an onsite role reporting directly to the EHS Manager at our Everett, WA office.
You Will:
Provide boots-on-the-ground safety oversight during manufacturing, commissioning, and production operations
Conduct daily field inspections, hazard identification, and Job Hazard Analyses (JHAs) to proactively prevent incidents
Coach and engage employees and contractors on safe work practices, PPE use, and procedure compliance
Support incident response and investigations, ensuring timely corrective and preventive actions
Deliver safety orientations and training for new employees and contractors
Reinforce a strong safety culture through visibility, accountability, and consistent field presence
Required Skills
3+ years of experience in EHS roles within construction, industrial, or manufacturing environments
Working knowledge of OSHA, NFPA, and other applicable safety standards
Demonstrated experience conducting field inspections, JHAs, and incident investigations
Strong communication and interpersonal skills; able to coach and influence across diverse teams
Physically able to conduct field inspections, climb stairs/ladders, and wear required PPE
Ability to work in dynamic, high-energy environments with 24/7 operations
Certifications: CHST, CSP, OSHA 30-Hour, or First Aid/CPR
#LI-Onsite #LI-IB1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\nSwing Shift Details: 5 days per week (M-F) | 3:00 PM – 11:00 PM\n\n\n\nWhat You Will Be Doing \n\nAs an EHS Specialist at Helion, you will be part of a growing team dedicated to ensuring safety excellence across production, commissioning, and 24/7 operational activities. You’ll provide daily on-site safety support, coach teams in the field, and drive continuous improvement in Helion’s safety culture. This is an onsite role reporting directly to the EHS Manager at our Everett, WA office. \n\nYou Will: \n\n - Provide boots-on-the-ground safety oversight during manufacturing, commissioning, and production operations\n\n - Conduct daily field inspections, hazard identification, and Job Hazard Analyses (JHAs) to proactively prevent incidents \n\n - Coach and engage employees and contractors on safe work practices, PPE use, and procedure compliance\n\n - Support incident response and investigations, ensuring timely corrective and preventive actions \n\n - Deliver safety orientations and training for new employees and contractors\n\n - Reinforce a strong safety culture through visibility, accountability, and consistent field presence\n\nRequired Skills \n\n - 3+ years of experience in EHS roles within construction, industrial, or manufacturing environments \n\n - Working knowledge of OSHA, NFPA, and other applicable safety standards\n\n - Demonstrated experience conducting field inspections, JHAs, and incident investigations\n\n - Strong communication and interpersonal skills; able to coach and influence across diverse teams\n\n - Physically able to conduct field inspections, climb stairs/ladders, and wear required PPE\n\n - Ability to work in dynamic, high-energy environments with 24/7 operations\n\n - Certifications: CHST, CSP, OSHA 30-Hour, or First Aid/CPR\n\n#LI-Onsite #LI-IB1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"b9012eef-f812-4855-b9b6-0a1c856924cb","title":"Computational Plasma Scientist - Kinetic / PIC Modeling","department":"Science","team":"Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-24T18:42:25.820+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/b9012eef-f812-4855-b9b6-0a1c856924cb","applyUrl":"https://jobs.ashbyhq.com/helion/b9012eef-f812-4855-b9b6-0a1c856924cb/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
Helion is hiring a Computational Plasma Scientist to run, analyze, and interpret kinetic / Particle-in-Cell simulations that support our understanding of plasma behavior in Helion’s fusion generators. In this role, you will use tools such as WarpX or similar PIC codes to execute defined simulation studies, analyze field and particle outputs, and compare results against experimental data from Helion’s operating machines. You will contribute to physics insight across topics such as plasma startup, RF/plasma interactions, particle transport, sheath behavior, and other kinetic effects that may not be fully captured by fluid or MHD models. This position reports to the Manager of Computational Science at our Everett, WA office and supports Helion’s path toward fusion electricity.
You Will:
Run kinetic / Particle-in-Cell simulations using WarpX or similar PIC codes to study plasma behavior relevant to Helion’s FRC systems
Develop and maintain simulation input decks, PICMI scripts, parameter scans, and repeatable workflows for defined kinetic modeling studies
Analyze field, particle, and diagnostic outputs from PIC simulations using Python or similar scientific computing tools
Compare kinetic simulation results against experimental measurements and summarize findings into clear technical takeaways
Work with experimental scientists, diagnostics engineers, RF engineers, and MHD modelers to understand modeling needs, interpret results, and identify when PIC simulations can provide useful insight
Build analysis scripts, visualizations, and reduced data products that help make simulation results easier to interpret and share across teams
Required Skills:
PhD in Plasma Physics, Applied Physics, Computational Physics, Nuclear Engineering, Aerospace Engineering, or a related technical field
Relevant experience running, analyzing, or interpreting kinetic / Particle-in-Cell plasma simulations in academic, national lab, or industry settings
Strong understanding of kinetic plasma physics and Particle-in-Cell modeling methods
Experience running and interpreting PIC simulations using WarpX, OSIRIS, VPIC, EPOCH, Smilei, LSP, FBPIC, or comparable codes
Experience supporting simulation studies, including input setup, boundary conditions, parameter scans, convergence checks, or validation workflows
Strong scientific programming skills in Python, MATLAB, Julia, C++, Fortran, or similar languages for simulation analysis and visualization
Ability to operate autonomously on day-to-day technical tasks while communicating progress, risks, and results clearly to computational, experimental, and cross-functional audiences
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\nWhat You Will Be Doing:\nHelion is hiring a Computational Plasma Scientist to run, analyze, and interpret kinetic / Particle-in-Cell simulations that support our understanding of plasma behavior in Helion’s fusion generators. In this role, you will use tools such as WarpX or similar PIC codes to execute defined simulation studies, analyze field and particle outputs, and compare results against experimental data from Helion’s operating machines. You will contribute to physics insight across topics such as plasma startup, RF/plasma interactions, particle transport, sheath behavior, and other kinetic effects that may not be fully captured by fluid or MHD models. This position reports to the Manager of Computational Science at our Everett, WA office and supports Helion’s path toward fusion electricity.\n\n\n\nYou Will:\n\n - Run kinetic / Particle-in-Cell simulations using WarpX or similar PIC codes to study plasma behavior relevant to Helion’s FRC systems\n\n - Develop and maintain simulation input decks, PICMI scripts, parameter scans, and repeatable workflows for defined kinetic modeling studies\n\n - Analyze field, particle, and diagnostic outputs from PIC simulations using Python or similar scientific computing tools\n\n - Compare kinetic simulation results against experimental measurements and summarize findings into clear technical takeaways\n\n - Work with experimental scientists, diagnostics engineers, RF engineers, and MHD modelers to understand modeling needs, interpret results, and identify when PIC simulations can provide useful insight\n\n - Build analysis scripts, visualizations, and reduced data products that help make simulation results easier to interpret and share across teams\n\n\n\nRequired Skills:\n\n - PhD in Plasma Physics, Applied Physics, Computational Physics, Nuclear Engineering, Aerospace Engineering, or a related technical field\n\n - Relevant experience running, analyzing, or interpreting kinetic / Particle-in-Cell plasma simulations in academic, national lab, or industry settings\n\n - Strong understanding of kinetic plasma physics and Particle-in-Cell modeling methods\n\n - Experience running and interpreting PIC simulations using WarpX, OSIRIS, VPIC, EPOCH, Smilei, LSP, FBPIC, or comparable codes\n\n - Experience supporting simulation studies, including input setup, boundary conditions, parameter scans, convergence checks, or validation workflows\n\n - Strong scientific programming skills in Python, MATLAB, Julia, C++, Fortran, or similar languages for simulation analysis and visualization\n\n - Ability to operate autonomously on day-to-day technical tasks while communicating progress, risks, and results clearly to computational, experimental, and cross-functional audiences\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"bcf1cf97-2e73-4e8c-b55f-a26b685ea3f2","title":"R&D Engineer - Fusion Generator Operations","department":"Research & Development ","team":"Research & Development ","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-04-27T20:58:11.509+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/bcf1cf97-2e73-4e8c-b55f-a26b685ea3f2","applyUrl":"https://jobs.ashbyhq.com/helion/bcf1cf97-2e73-4e8c-b55f-a26b685ea3f2/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will help operate and advance the most powerful, pulsed-fusion device ever constructed to generate electrical power. As a member of the Research and Development team, you will play a critical role in the safe, reliable, and repeatable operation of high-energy fusion systems. You will contribute to the execution of fusion experiments, system readiness, and continuous improvement of machine performance.
You Will:
Operate and support the day-to-day execution of Field-Reversed Configuration (FRC) fusion experiments, ensuring safe and repeatable machine performance
Control and monitor pulsed power systems, including mega-joule capacitor banks and high-energy infrastructure, with a focus on operational reliability and readiness
Own system readiness for experiments, including pre-shot setup, system checks, troubleshooting, and analysis
Identify, diagnose, and resolve issues in high-energy and large-scale vacuum systems to minimize downtime and improve operational efficiency
Apply plasma physics concepts to support experiment execution and interpret diagnostics for magnetic fields, fusion products, and plasma characteristics
Drive continuous improvement of machine operations, including refining procedures, improving system robustness, and reducing variability in experimental results
Collaborate cross-functionally with engineering, science, and production teams to improve system performance and operational throughput
Required Skills:
B.S. with 4+ years of relevant experience, or M.S. with 2+ years of relevant experience in Aerospace, Mechanical Engineering, Physics, or a related field
Extensive hands-on experience operating, maintaining, or improving high-vacuum chamber systems or high-voltage capacitor systems
Experience owning system uptime, reliability, and performance, including troubleshooting and root cause analysis
Proven experience executing complex experiments or operations with a focus on repeatability, safety, and continuous improvement
Demonstrated ability to rapidly learn new technologies and take ownership of operational systems
Strong problem-solving skills and ability to respond effectively to real-time issues with minimal supervision
Proven ability to collaborate effectively within a team and contribute to a high-performance operational environment
Experience mentoring or training others in system operation is a plus
#LI-Onsite #LI-TM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will help operate and advance the most powerful, pulsed-fusion device ever constructed to generate electrical power. As a member of the Research and Development team, you will play a critical role in the safe, reliable, and repeatable operation of high-energy fusion systems. You will contribute to the execution of fusion experiments, system readiness, and continuous improvement of machine performance.\n\nYou Will:\n\n - Operate and support the day-to-day execution of Field-Reversed Configuration (FRC) fusion experiments, ensuring safe and repeatable machine performance\n\n - Control and monitor pulsed power systems, including mega-joule capacitor banks and high-energy infrastructure, with a focus on operational reliability and readiness\n\n - Own system readiness for experiments, including pre-shot setup, system checks, troubleshooting, and analysis\n\n - Identify, diagnose, and resolve issues in high-energy and large-scale vacuum systems to minimize downtime and improve operational efficiency\n\n - Apply plasma physics concepts to support experiment execution and interpret diagnostics for magnetic fields, fusion products, and plasma characteristics\n\n - Drive continuous improvement of machine operations, including refining procedures, improving system robustness, and reducing variability in experimental results\n\n - Collaborate cross-functionally with engineering, science, and production teams to improve system performance and operational throughput\n\nRequired Skills:\n\n - B.S. with 4+ years of relevant experience, or M.S. with 2+ years of relevant experience in Aerospace, Mechanical Engineering, Physics, or a related field\n\n - Extensive hands-on experience operating, maintaining, or improving high-vacuum chamber systems or high-voltage capacitor systems\n\n - Experience owning system uptime, reliability, and performance, including troubleshooting and root cause analysis\n\n - Proven experience executing complex experiments or operations with a focus on repeatability, safety, and continuous improvement\n\n - Demonstrated ability to rapidly learn new technologies and take ownership of operational systems\n\n - Strong problem-solving skills and ability to respond effectively to real-time issues with minimal supervision\n\n - Proven ability to collaborate effectively within a team and contribute to a high-performance operational environment\n\n - Experience mentoring or training others in system operation is a plus\n\n#LI-Onsite #LI-TM1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"bd47c631-9e99-4a1b-b587-73fbc688bf71","title":"Senior Process Control Engineer","department":"Fuel Cycle","team":"Fuel Cycle","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-11T16:55:08.136+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/bd47c631-9e99-4a1b-b587-73fbc688bf71","applyUrl":"https://jobs.ashbyhq.com/helion/bd47c631-9e99-4a1b-b587-73fbc688bf71/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
As a Senior Process Control Engineer, you will lead the development of the control strategy and automation architecture for Helion's fusion fuel cycle systems. You will work at the intersection of process engineering, plant design, and operations to define how a first-of-a-kind process is monitored, controlled, and operated safely and reliably. This role requires an engineer who can quickly understand an evolving fusion fuel cycle process, determine the appropriate control and automation approach, and own implementation from early design through commissioning, including the unique challenge of integration with the fusion machine controller. You will serve as the technical owner of process controls for a critical part of Helion's path to commercial fusion. You will report directly to the Fuel Cycle Operations Lead at our Everett, WA office.
You Will:
Develop and own the control philosophy, control architecture, and automation strategy for Orion fuel cycle systems
Decompose mission requirements into control system architectures, instrumentation strategies, automation requirements, and HMI, alarming, and operational data system specifications
Lead vendor evaluation and selection and manage technical execution to ensure successful delivery, integration, commissioning, and operation of fuel cycle controls systems
Collaborate with the Plant Controls Team and external vendors to define system interfaces, develop ICDs, and integrate fuel cycle controls into the plant automation architecture
Standardize and oversee development of important deliverables including control narratives, instrument datasheets, I/O lists, loop diagrams, and cause & effect diagrams for fuel cycle controllers
Lead remote and onsite commissioning of fuel cycle control systems for the world’s first fusion power plant, located in Malaga, WA
Required Skills:
Bachelor's degree in Chemical Engineering, Electrical Engineering, Control Systems Engineering, or a related engineering discipline
8+ years of experience developing and deploying industrial process control systems in complex manufacturing, chemical, energy, or related process industries
Experience supporting industrial control systems across multiple project phases, including design, implementation, commissioning and operations
Demonstrated expertise in process controls engineering, including instrumentation selection and automation system architecture
Experience designing industrial control systems with cybersecurity, reliability, maintainability and process safety requirements in mind, including familiarity with LOPA methodologies, Safety Instrumented Systems (SIS), and SIF/SIL lifecycle activities
Demonstrated ability to independently navigate ambiguity, rapidly learn new technical domains, and drive cross-functional decisions
Preferred Skills:
Experience with first-of-a-kind facilities, pilot plants, advanced energy systems, nuclear technologies, gas processing, semiconductor manufacturing, or specialty chemical processes
Experience with control systems for processes involving gas handling, separation, vacuum, cryogenic operations, or other systems with complex process dynamics and specialized instrumentation requirements
Familiarity with industrial control system cybersecurity, functional safety, and regulatory compliance frameworks, including ISA/IEC 62443, IEC 61511, NERC, and WECC
Experience with multiple industrial control platforms, enabling informed evaluation and selection, such as Emerson DeltaV, Honeywell Experion, Yokogawa CENTUM, Siemens PCS7, or similar systems
#LI-Onsite #LI-TM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nAs a Senior Process Control Engineer, you will lead the development of the control strategy and automation architecture for Helion's fusion fuel cycle systems. You will work at the intersection of process engineering, plant design, and operations to define how a first-of-a-kind process is monitored, controlled, and operated safely and reliably. This role requires an engineer who can quickly understand an evolving fusion fuel cycle process, determine the appropriate control and automation approach, and own implementation from early design through commissioning, including the unique challenge of integration with the fusion machine controller. You will serve as the technical owner of process controls for a critical part of Helion's path to commercial fusion. You will report directly to the Fuel Cycle Operations Lead at our Everett, WA office.\n\nYou Will:\n\n - Develop and own the control philosophy, control architecture, and automation strategy for Orion fuel cycle systems\n\n - Decompose mission requirements into control system architectures, instrumentation strategies, automation requirements, and HMI, alarming, and operational data system specifications\n\n - Lead vendor evaluation and selection and manage technical execution to ensure successful delivery, integration, commissioning, and operation of fuel cycle controls systems\n\n - Collaborate with the Plant Controls Team and external vendors to define system interfaces, develop ICDs, and integrate fuel cycle controls into the plant automation architecture\n\n - Standardize and oversee development of important deliverables including control narratives, instrument datasheets, I/O lists, loop diagrams, and cause & effect diagrams for fuel cycle controllers\n\n - Lead remote and onsite commissioning of fuel cycle control systems for the world’s first fusion power plant, located in Malaga, WA\n\nRequired Skills:\n\n - Bachelor's degree in Chemical Engineering, Electrical Engineering, Control Systems Engineering, or a related engineering discipline\n\n - 8+ years of experience developing and deploying industrial process control systems in complex manufacturing, chemical, energy, or related process industries\n\n - Experience supporting industrial control systems across multiple project phases, including design, implementation, commissioning and operations\n\n - Demonstrated expertise in process controls engineering, including instrumentation selection and automation system architecture\n\n - Experience designing industrial control systems with cybersecurity, reliability, maintainability and process safety requirements in mind, including familiarity with LOPA methodologies, Safety Instrumented Systems (SIS), and SIF/SIL lifecycle activities\n\n - Demonstrated ability to independently navigate ambiguity, rapidly learn new technical domains, and drive cross-functional decisions\n\nPreferred Skills:\n\n - Experience with first-of-a-kind facilities, pilot plants, advanced energy systems, nuclear technologies, gas processing, semiconductor manufacturing, or specialty chemical processes\n\n - Experience with control systems for processes involving gas handling, separation, vacuum, cryogenic operations, or other systems with complex process dynamics and specialized instrumentation requirements\n\n - Familiarity with industrial control system cybersecurity, functional safety, and regulatory compliance frameworks, including ISA/IEC 62443, IEC 61511, NERC, and WECC\n\n - Experience with multiple industrial control platforms, enabling informed evaluation and selection, such as Emerson DeltaV, Honeywell Experion, Yokogawa CENTUM, Siemens PCS7, or similar systems\n\n#LI-Onsite #LI-TM1\n\n \n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"bec9911b-e47d-4df3-906e-b370ac22e99a","title":"Senior Multiphysics Simulation Engineer","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-02-26T17:11:46.385+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/bec9911b-e47d-4df3-906e-b370ac22e99a","applyUrl":"https://jobs.ashbyhq.com/helion/bec9911b-e47d-4df3-906e-b370ac22e99a/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will own hardware designs for Helion's fusion generator prototypes. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. You will report directly to our Senior Manager of Engineering at our Everett, WA office.
You Will:
Enhancing Helion’s analysis workflow for critical structures (electromagnets)
Running transient multiphysics finite-element models to generate margins for critical designs
Collaborating with a multidisciplinary engineering team to improve critical hardware designs
Learning from in-house experts to expand your skillset into electrical and thermal analysis
Building software tools to automate the analysis workflow and allow Helion engineers and scientists to run their own analysis
Required Skills:
You have a bachelor’s degree in electrical engineering, applied mathematics, physics or related field with a minimum of 3 years of hands-on engineering experience.
Strong background in analytical, computational and numerical simulation methods
Expert level understanding of electromagnetic and thermal finite element modeling
Experience in taking on complex analysis problems from formulation through hardware testing and model correlation.
Proficiency with multiphysics finite-element analysis tools such as COSMOL, ANSYS or equivalent
Experience with programming environments (Matlab, Python, etc.) for scripting, tooling or data analysis
Familiarity with semiconductor physics, solid mechanics and structural dynamics (modal, transient)
Familiarity with Slurm or other high-performance computer cluster (HPC) batch schedulers
Desire to positively impact complex structural designs, rather than just execute on analysis
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will own hardware designs for Helion's fusion generator prototypes. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. You will report directly to our Senior Manager of Engineering at our Everett, WA office.\n\nYou Will:\n\n - Enhancing Helion’s analysis workflow for critical structures (electromagnets)\n\n - Running transient multiphysics finite-element models to generate margins for critical designs\n\n - Collaborating with a multidisciplinary engineering team to improve critical hardware designs\n\n - Learning from in-house experts to expand your skillset into electrical and thermal analysis\n\n - Building software tools to automate the analysis workflow and allow Helion engineers and scientists to run their own analysis\n\nRequired Skills:\n\n - You have a bachelor’s degree in electrical engineering, applied mathematics, physics or related field with a minimum of 3 years of hands-on engineering experience.\n\n - Strong background in analytical, computational and numerical simulation methods\n\n - Expert level understanding of electromagnetic and thermal finite element modeling\n\n - Experience in taking on complex analysis problems from formulation through hardware testing and model correlation.\n\n - Proficiency with multiphysics finite-element analysis tools such as COSMOL, ANSYS or equivalent\n\n - Experience with programming environments (Matlab, Python, etc.) for scripting, tooling or data analysis\n\n - Familiarity with semiconductor physics, solid mechanics and structural dynamics (modal, transient)\n\n - Familiarity with Slurm or other high-performance computer cluster (HPC) batch schedulers\n\n - Desire to positively impact complex structural designs, rather than just execute on analysis\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"bfb14f68-c80a-4c07-8552-4c9bf5bed413","title":"Integration and Test Engineer","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-02-26T19:56:09.435+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/bfb14f68-c80a-4c07-8552-4c9bf5bed413","applyUrl":"https://jobs.ashbyhq.com/helion/bfb14f68-c80a-4c07-8552-4c9bf5bed413/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will lead cross-subsystem integration and test activities for Helion’s current and future fusion generator prototypes. This is a hands-on, role with broad technical scope and responsibility through build and commissioning phases. You will report to a Mechanical Engineering Lead and play a key role in shaping the execution and culture of a growing engineering team. This role is onsite at our headquarters in Everett, WA.
You Will:
Own the integration sequence and day-to-day execution of assembly across generator subsystems, including vacuum systems, electromagnets, high-voltage capacitor systems, controls, diagnostics, and radiation safety
Develop and manage a multidisciplinary schedule on a daily and weekly basis to ensure full build completion
Define, plan, and execute integrated subsystem tests in collaboration with subsystem owners
Lead build completion reviews to verify operational readiness and test preparedness
Collaborate with production, test, and engineering teams to improve integration and build processes
Author work instructions for technician teams to support both nominal builds and non-conformance resolution
Lead root cause analyses and implement corrective actions during integration and build
Drive strategies for hardware upgrades, replacements, and integration improvements to maximize uptime
Perform trade studies on build sequencing, hardware prioritization, and resource allocation to influence Helion’s system development approach
Required Skills:
Bachelor’s degree in Engineering or a related field
3+ years of professional experience delivering full-scope engineering projects, including schedule ownership
Demonstrated use of engineering first-principles and structured problem-solving
Hands-on experience across multiple engineering disciplines such as mechanical, electrical, and fluids
Effective technical communication across functional and organizational levels
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will lead cross-subsystem integration and test activities for Helion’s current and future fusion generator prototypes. This is a hands-on, role with broad technical scope and responsibility through build and commissioning phases. You will report to a Mechanical Engineering Lead and play a key role in shaping the execution and culture of a growing engineering team. This role is onsite at our headquarters in Everett, WA.\n\nYou Will:\n\n - Own the integration sequence and day-to-day execution of assembly across generator subsystems, including vacuum systems, electromagnets, high-voltage capacitor systems, controls, diagnostics, and radiation safety\n\n - Develop and manage a multidisciplinary schedule on a daily and weekly basis to ensure full build completion\n\n - Define, plan, and execute integrated subsystem tests in collaboration with subsystem owners\n\n - Lead build completion reviews to verify operational readiness and test preparedness\n\n - Collaborate with production, test, and engineering teams to improve integration and build processes\n\n - Author work instructions for technician teams to support both nominal builds and non-conformance resolution\n\n - Lead root cause analyses and implement corrective actions during integration and build\n\n - Drive strategies for hardware upgrades, replacements, and integration improvements to maximize uptime\n\n - Perform trade studies on build sequencing, hardware prioritization, and resource allocation to influence Helion’s system development approach\n\nRequired Skills:\n\n - Bachelor’s degree in Engineering or a related field\n\n - 3+ years of professional experience delivering full-scope engineering projects, including schedule ownership\n\n - Demonstrated use of engineering first-principles and structured problem-solving\n\n - Hands-on experience across multiple engineering disciplines such as mechanical, electrical, and fluids\n\n - Effective technical communication across functional and organizational levels\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"c4724186-c706-458e-a47f-5be613ed9442","title":"Senior Manager Mechanical Engineering, Structures","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-01-30T22:11:03.963+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/c4724186-c706-458e-a47f-5be613ed9442","applyUrl":"https://jobs.ashbyhq.com/helion/c4724186-c706-458e-a47f-5be613ed9442/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will lead the mechanical hardware design of high-performance structural systems for Helion's fusion devices. Your role will focus on solving complex, high-impact problems that influence system performance, while also growing a high-performing engineering team. You will establish technical standards, drive execution, and shape design processes to increase the speed and quality of innovation. You will report to the Senior Manager of Engineering, and this is an onsite role located at our Everett, WA office.
You Will:
Grow and mentor a team of multidisciplinary structural and mechanical engineers
Oversee design of machine architecture, high-performance structural systems, shielding, and piece part + assembly design
Drive high-level architectural decisions on neutron shielding, primary structures, racking, and plant design schemes
Lead design, analysis, and manufacturing process improvements to increase throughput
Collaborate with Research, Science, Electrical, and Controls teams to derive requirements and meet program goals
Required Skills:
Bachelor's degree in Engineering
10+ years of structural/mechanical engineering experience, including 3+ years in an engineering management role
Demonstrated ability to hire and grow engineers providing impactful career development
Experience leading multidisciplinary teams with full-scope project ownership
Proven ability to manage complex engineering projects with schedule accountability
Hands-on exposure to multiple engineering disciplines such as mechanical, thermal, and large structures
Ability to apply engineering first-principles and structured problem-solving to technical challenges
#LI-Onsite, #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will lead the mechanical hardware design of high-performance structural systems for Helion's fusion devices. Your role will focus on solving complex, high-impact problems that influence system performance, while also growing a high-performing engineering team. You will establish technical standards, drive execution, and shape design processes to increase the speed and quality of innovation. You will report to the Senior Manager of Engineering, and this is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Grow and mentor a team of multidisciplinary structural and mechanical engineers\n\n - Oversee design of machine architecture, high-performance structural systems, shielding, and piece part + assembly design \n\n - Drive high-level architectural decisions on neutron shielding, primary structures, racking, and plant design schemes\n\n - Lead design, analysis, and manufacturing process improvements to increase throughput\n\n - Collaborate with Research, Science, Electrical, and Controls teams to derive requirements and meet program goals\n\nRequired Skills:\n\n - Bachelor's degree in Engineering\n\n - 10+ years of structural/mechanical engineering experience, including 3+ years in an engineering management role\n\n - Demonstrated ability to hire and grow engineers providing impactful career development\n\n - Experience leading multidisciplinary teams with full-scope project ownership\n\n - Proven ability to manage complex engineering projects with schedule accountability\n\n - Hands-on exposure to multiple engineering disciplines such as mechanical, thermal, and large structures\n\n - Ability to apply engineering first-principles and structured problem-solving to technical challenges\n\n#LI-Onsite, #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"c50d7377-a506-4de5-804b-67f1df306393","title":"Senior Supplier Development Engineer, Electrical","department":"Electrical Engineering","team":"Electrical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-12-19T19:49:14.019+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/c50d7377-a506-4de5-804b-67f1df306393","applyUrl":"https://jobs.ashbyhq.com/helion/c50d7377-a506-4de5-804b-67f1df306393/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
We are hiring a Sr. Supplier Development Engineer to work with suppliers to make parts for fusion generators. You will solve technical problems, develop our supplier's quality systems, and accelerate Helion's transition from rapid prototyping to mass generator manufacturing, thus delivering on Helion's mission of providing clean electricity to the planet. This is an onsite role that reports directly to Senior Manager of Electrical Engineering at our Everett, WA office.
You Will:
Collaborate with design engineers to gain an in-depth knowledge of part, assembly, and sub-system design intent
Assess suppliers' manufacturing processes and quality systems to source parts, in partnership with procurement team
Support product ramp from new product introduction through to high-volume manufacturing
Define supplier technical and quality specifications based on engineering and program requirements
Implement and monitor the production part approval process (PPAP) with selected suppliers to promote rate production
Ensure suppliers understand requirements for document submissions (e.g., first article inspection reports, quality documentation)
Develop and approve process controls for important characteristics
Recommend technical product improvements to reduce risk and potential defect opportunities
Analyze supplier quality and delivery metrics to identify trends and systemic performance gaps to improve plans
Coordinate between suppliers, engineers, buyers, and production to resolve supplier quality issues
Guide supplier corrective actions associated with escapes or containments identified in production or the supply chain
Improve the supply chain
Help build the supplier quality program and team at Helion
Help develop receiving inspection and quality standards
Required Skills:
5+ years of engineering, manufacturing, or supply chain experience—including school projects, clubs, or internships—in mechanical or electrical systems
Bachelor's degree or higher in an engineering discipline, or relevant field
Experience managing external suppliers
Knowledge of supplier quality processes (e.g., production part approval process, advanced product quality planning, first article inspection reports)
Knowledge of statistical techniques and methods (e.g., design of experiments, Six Sigma)
Experience with quality systems (ISO 9000 / TS)
Able to travel up to 50% of the time
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nWe are hiring a Sr. Supplier Development Engineer to work with suppliers to make parts for fusion generators. You will solve technical problems, develop our supplier's quality systems, and accelerate Helion's transition from rapid prototyping to mass generator manufacturing, thus delivering on Helion's mission of providing clean electricity to the planet. This is an onsite role that reports directly to Senior Manager of Electrical Engineering at our Everett, WA office.\n\nYou Will:\n\n - Collaborate with design engineers to gain an in-depth knowledge of part, assembly, and sub-system design intent\n\n - Assess suppliers' manufacturing processes and quality systems to source parts, in partnership with procurement team\n\n - Support product ramp from new product introduction through to high-volume manufacturing\n\n - Define supplier technical and quality specifications based on engineering and program requirements\n\n - Implement and monitor the production part approval process (PPAP) with selected suppliers to promote rate production\n\n - Ensure suppliers understand requirements for document submissions (e.g., first article inspection reports, quality documentation)\n\n - Develop and approve process controls for important characteristics\n\n - Recommend technical product improvements to reduce risk and potential defect opportunities\n\n - Analyze supplier quality and delivery metrics to identify trends and systemic performance gaps to improve plans\n\n - Coordinate between suppliers, engineers, buyers, and production to resolve supplier quality issues\n\n - Guide supplier corrective actions associated with escapes or containments identified in production or the supply chain\n\n - Improve the supply chain\n\n - Help build the supplier quality program and team at Helion\n\n - Help develop receiving inspection and quality standards\n\nRequired Skills:\n\n - 5+ years of engineering, manufacturing, or supply chain experience—including school projects, clubs, or internships—in mechanical or electrical systems\n\n - Bachelor's degree or higher in an engineering discipline, or relevant field\n\n - Experience managing external suppliers\n\n - Knowledge of supplier quality processes (e.g., production part approval process, advanced product quality planning, first article inspection reports)\n\n - Knowledge of statistical techniques and methods (e.g., design of experiments, Six Sigma)\n\n - Experience with quality systems (ISO 9000 / TS)\n\n - Able to travel up to 50% of the time\n\n#LI-Onsite #LI-KL1\n\n \n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"c575251c-1851-4296-a12a-3779ec56c6c3","title":"Materials Engineer","department":"Material Science","team":"Material Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-05-21T19:14:38.563+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/c575251c-1851-4296-a12a-3779ec56c6c3","applyUrl":"https://jobs.ashbyhq.com/helion/c575251c-1851-4296-a12a-3779ec56c6c3/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will own well defined workstreams in the lab: designing and running experiments, developing and refining test setups and procedures, and turning data into clear recommendations. You'll partner closely with senior engineers and cross functional teams to translate results into design and process changes, while receiving guidance on priorities and broader strategy. You will report to the Materials Manager, and this is an onsite role located at our Everett, WA office.
You Will:
Plan and run materials test campaigns on materials
Lead failure investigations on structural and polymer-based insulation systems and related components (e.g., insulators, capacitor dielectrics, foils, oils, seals, HV/electrical interfaces) within your scope
Develop and follow lab procedures and checklists for your test areas
Provide materials input to designs in your domain
Be an effective team-member in cross-functional teams and communicate on a regular cadence
Support and mentor lab technologists on specific test methods and setups you own, and collaborate with peers to troubleshoot experiments and fixtures
Required Skills:
Bachelor's or Master's degree in Materials Science, Polymer Science, Chemical Engineering, Electrical Engineering, or a related field, or equivalent industry experience
Hands on experience with failure analysis of materials or components, ideally including electrical insulation systems (e.g., capacitors, HV components, cables, coils) and typical degradation mechanisms.
3+ years of experience with general materials characterization and FA tools, such as:
Optical and/or SEM microscopy
Mechanical or physical property testing
Dielectric testing and/or basic electrical characterization
Polymer characterization tools (e.g., FTIR, DSC, TGA or similar)
Experience working in a lab environment with custom or nonstandard setups, including:
Fixture assembly and basic design
Instrumentation and test scripting or manual test control
Safe operation under written procedures
Strong written and verbal communication skills, with examples of clear, timely updates and effective collaboration with cross functional partners.
Experienced with process oriented approach to lab work, including consistent documentation, good sample hygiene, and adherence to safety protocols.
#LI-Onsite #LI-TS1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will own well defined workstreams in the lab: designing and running experiments, developing and refining test setups and procedures, and turning data into clear recommendations. You'll partner closely with senior engineers and cross functional teams to translate results into design and process changes, while receiving guidance on priorities and broader strategy. You will report to the Materials Manager, and this is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Plan and run materials test campaigns on materials\n\n - Lead failure investigations on structural and polymer-based insulation systems and related components (e.g., insulators, capacitor dielectrics, foils, oils, seals, HV/electrical interfaces) within your scope\n\n - Develop and follow lab procedures and checklists for your test areas\n\n - Provide materials input to designs in your domain\n\n - Be an effective team-member in cross-functional teams and communicate on a regular cadence\n\n - Support and mentor lab technologists on specific test methods and setups you own, and collaborate with peers to troubleshoot experiments and fixtures\n\nRequired Skills:\n\n - Bachelor's or Master's degree in Materials Science, Polymer Science, Chemical Engineering, Electrical Engineering, or a related field, or equivalent industry experience\n\n - Hands on experience with failure analysis of materials or components, ideally including electrical insulation systems (e.g., capacitors, HV components, cables, coils) and typical degradation mechanisms.\n\n - 3+ years of experience with general materials characterization and FA tools, such as:\n \n - Optical and/or SEM microscopy\n \n - Mechanical or physical property testing\n \n - Dielectric testing and/or basic electrical characterization\n \n - Polymer characterization tools (e.g., FTIR, DSC, TGA or similar)\n\n - Experience working in a lab environment with custom or nonstandard setups, including:\n \n - Fixture assembly and basic design\n \n - Instrumentation and test scripting or manual test control\n \n - Safe operation under written procedures\n\n - Strong written and verbal communication skills, with examples of clear, timely updates and effective collaboration with cross functional partners.\n\n - Experienced with process oriented approach to lab work, including consistent documentation, good sample hygiene, and adherence to safety protocols.\n\n#LI-Onsite #LI-TS1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"cec38fd0-2853-4ccb-8ab3-3925239237e8","title":"Senior Network Engineer","department":"Information Security & Technology ","team":"Information Security & Technology ","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-11-08T01:14:11.672+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/cec38fd0-2853-4ccb-8ab3-3925239237e8","applyUrl":"https://jobs.ashbyhq.com/helion/cec38fd0-2853-4ccb-8ab3-3925239237e8/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
The Senior Network Engineer is a key member of the IS&T infrastructure team, responsible for architecting and managing enterprise-level network systems. This role involves leading network design initiatives, troubleshooting advanced issues, and ensuring the security and reliability of all network operations. This is an onsite role that reports directly to our Infrastructure Security Manager at our Everett, WA office.
You Will:
Architect and deploy LAN/WAN, VPN, and cloud-based network solutions to support business needs
Monitor Fortinet based network performance, identify bottlenecks, and implement enhancements to improve speed and reliability
Configure and manage Fortinet firewalls, intrusion detection/prevention systems, and access controls to safeguard network assets
Resolve escalated network issues and provide Tier 3 support for complex problems
Maintain detailed network diagrams, configuration records, and performance reports
Lead network-related projects, including upgrades, migrations, and integrations with other IT systems
Work closely with system administrators, cybersecurity teams, and vendors to ensure seamless operations
Train and mentor junior network engineers and contribute to team development
Required Skills:
8+ years of network engineering experience
Deep knowledge of routing and switching protocols (BGP, OSPF, EIGRP), network hardware (Fortinet, Cisco, Juniper), and cloud networking (AWS, Azure, GCP)
Experience with network security tools and protocols, including VPNs, firewalls, and NAC systems
Strong problem-solving abilities (layers 2 & 3, WiFi setup and tuning) and capacity planning experience
CCNP, CCIE, or equivalent certifications preferred
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\n\n\nWhat You Will Be Doing:\n\nThe Senior Network Engineer is a key member of the IS&T infrastructure team, responsible for architecting and managing enterprise-level network systems. This role involves leading network design initiatives, troubleshooting advanced issues, and ensuring the security and reliability of all network operations. This is an onsite role that reports directly to our Infrastructure Security Manager at our Everett, WA office.\n\n\n\nYou Will:\n\n - Architect and deploy LAN/WAN, VPN, and cloud-based network solutions to support business needs\n\n - Monitor Fortinet based network performance, identify bottlenecks, and implement enhancements to improve speed and reliability\n\n - Configure and manage Fortinet firewalls, intrusion detection/prevention systems, and access controls to safeguard network assets\n\n - Resolve escalated network issues and provide Tier 3 support for complex problems\n\n - Maintain detailed network diagrams, configuration records, and performance reports\n\n - Lead network-related projects, including upgrades, migrations, and integrations with other IT systems\n\n - Work closely with system administrators, cybersecurity teams, and vendors to ensure seamless operations\n\n - Train and mentor junior network engineers and contribute to team development\n\n\n\nRequired Skills:\n\n - 8+ years of network engineering experience\n\n - Deep knowledge of routing and switching protocols (BGP, OSPF, EIGRP), network hardware (Fortinet, Cisco, Juniper), and cloud networking (AWS, Azure, GCP)\n\n - Experience with network security tools and protocols, including VPNs, firewalls, and NAC systems\n\n - Strong problem-solving abilities (layers 2 & 3, WiFi setup and tuning) and capacity planning experience\n\n - CCNP, CCIE, or equivalent certifications preferred\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"d9e0e2c2-5fda-44e2-b8f6-693590dd7702","title":"Process Design Lead, Fuel Cycle","department":"Fuel Cycle","team":"Fuel Cycle","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-11-20T21:49:09.333+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/d9e0e2c2-5fda-44e2-b8f6-693590dd7702","applyUrl":"https://jobs.ashbyhq.com/helion/d9e0e2c2-5fda-44e2-b8f6-693590dd7702/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
As Helion’s Process Design Lead, you will guide a multidisciplinary team of engineers responsible for architecting, designing, and delivering the fuel cycle systems that will enable Orion, Helion’s next-generation fusion power plant. You will set the technical direction for core technologies in the fuel cycle involving a variety of separation, vacuum, and cryogenic processes, ensuring they integrate seamlessly into Orion and future fusion platforms. In this role, you will also accelerate Helion’s risk-reduction efforts by identifying and leading projects to address critical technology risks and evaluate emerging fuel cycle approaches. Your leadership will influence the strategy, execution, and growth of Helion’s fuel cycle capabilities as we scale toward commercial fusion. This is an onsite role that reports directly to the Fuel Cycle Manager at our Everett, WA office.
You Will:
Lead, develop, and empower a multidisciplinary team of engineers owning the architecture, design, procurement, installation, and validation of Orion’s fuel cycle systems
Drive design risk reduction by partnering with the Fuel Cycle Operations and R&D teams to test and validate design assumptions on in-house pilot scale systems and Polaris, enabling confident system delivery
Collaborate cross-functionally with Special Projects, Mechanical, Electrical, Controls, and broader engineering teams to define interface requirements, deliver fully integrated system designs, and delegate work appropriately
Set the standard for design excellence by developing and reinforcing robust processes for fuel cycle system design reviews, bills of design, risk analyses, and mitigations, and management of change
Translate strategic goals into actionable objectives, managing month-to-month planning, schedules, and priorities to ensure reliable and on-time delivery of high-impact projects
Mentor and grow engineering talent, fostering technical depth, accountability, and career development
Required Skills:
Bachelor’s degree in Engineering or related field
5+ years of engineering experience, including 2+ years in an engineering leadership role
Experience designing, delivering, and integrating pilot- or commercial-scale process systems
Experience managing a multidisciplinary engineering team in a fast-paced environment
Experience balancing design work, validation testing, and development projects in parallel
Strong record of mentorship with demonstrated ability to coach and develop engineers
Hands-on familiarity with chemical, mechanical, thermal and/or fluid systems engineering
Comfort operating in a startup environment with change, ambiguity, and rapid execution
#LI-Onsite #LI-TM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing: \n\nAs Helion’s Process Design Lead, you will guide a multidisciplinary team of engineers responsible for architecting, designing, and delivering the fuel cycle systems that will enable Orion, Helion’s next-generation fusion power plant. You will set the technical direction for core technologies in the fuel cycle involving a variety of separation, vacuum, and cryogenic processes, ensuring they integrate seamlessly into Orion and future fusion platforms. In this role, you will also accelerate Helion’s risk-reduction efforts by identifying and leading projects to address critical technology risks and evaluate emerging fuel cycle approaches. Your leadership will influence the strategy, execution, and growth of Helion’s fuel cycle capabilities as we scale toward commercial fusion. This is an onsite role that reports directly to the Fuel Cycle Manager at our Everett, WA office. \n\nYou Will: \n\n - Lead, develop, and empower a multidisciplinary team of engineers owning the architecture, design, procurement, installation, and validation of Orion’s fuel cycle systems \n\n - Drive design risk reduction by partnering with the Fuel Cycle Operations and R&D teams to test and validate design assumptions on in-house pilot scale systems and Polaris, enabling confident system delivery\n\n - Collaborate cross-functionally with Special Projects, Mechanical, Electrical, Controls, and broader engineering teams to define interface requirements, deliver fully integrated system designs, and delegate work appropriately\n\n - Set the standard for design excellence by developing and reinforcing robust processes for fuel cycle system design reviews, bills of design, risk analyses, and mitigations, and management of change\n\n - Translate strategic goals into actionable objectives, managing month-to-month planning, schedules, and priorities to ensure reliable and on-time delivery of high-impact projects\n\n - Mentor and grow engineering talent, fostering technical depth, accountability, and career development \n\nRequired Skills: \n\n - Bachelor’s degree in Engineering or related field \n\n - 5+ years of engineering experience, including 2+ years in an engineering leadership role \n\n - Experience designing, delivering, and integrating pilot- or commercial-scale process systems \n\n - Experience managing a multidisciplinary engineering team in a fast-paced environment \n\n - Experience balancing design work, validation testing, and development projects in parallel \n\n - Strong record of mentorship with demonstrated ability to coach and develop engineers \n\n - Hands-on familiarity with chemical, mechanical, thermal and/or fluid systems engineering \n\n - Comfort operating in a startup environment with change, ambiguity, and rapid execution \n\n#LI-Onsite #LI-TM1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"dbf521f9-711d-42b7-9060-57c1c755fdaa","title":"Technical Program Manager - HERCULES","department":"Nuclear","team":"Nuclear","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2025-10-23T20:36:41.235+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/dbf521f9-711d-42b7-9060-57c1c755fdaa","applyUrl":"https://jobs.ashbyhq.com/helion/dbf521f9-711d-42b7-9060-57c1c755fdaa/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing
You will be the Technical Project Manager for projects on the Nuclear Science team, including HERCULES – the Helion External Research Collaboration for Universities, Labs, and Enterprise Scientists. Through HERCULES, Helion will fund impactful research at universities, national labs, and research companies, totaling over $20M over three years in a phased approach. As administrator for this program, you will review proposals, work with Helion's business teams and the awardee to go from proposal to funded project, then guide the technical work in partnership with internal PIs through the lifecycle of the project. Your superpower will be technical breadth, ensuring scientific alignment with Helion's objectives. This is an onsite role that reports directly to Director of Nuclear Science at our Everett, WA office.
You Will
Lead the HERCULES program, totaling over $20M over three years
Work on the cutting edge of research, contributing to the breadth of Helion's science and R&D spanning nuclear, materials, fuel, and pulsed power science. You will partner with internal PIs across all of Helion's technical teams
Evaluate proposal submissions, quickly navigate contracts, disperse funds to research partners, guide technical work, and ensure on-track deliverables
Communicate externally to potential partners to advertise the program, and internally to leaders and executives on progress and impact. You will be the bridge between Helion leadership, PIs, and business units, and those of our partners
Teach our partners how to move fast and accelerate. You will find their largest blockers – supply chain, legal, and technical and solve them
Jump in and ensure the delivery of internal Nuclear Science projects in parallel to external projects
Required Skills
Research Experience: you have a PhD in science or engineering, or equivalent experience delivering impactful research through the scientific lifecycle in an academic or national lab setting
Technical breadth: as the leader of this program, you have the technical skillset to understand projects spanning nuclear science, materials science, chemical engineering, experimental and computational plasma physics, and electrical engineering (pulsed power). This will be demonstrated by the delivery of multidisciplinary projects and/or publications spanning multiple discipline
Communication: you can talk to scientists and business executives. You can condense information into short memos, understand key information from technical reports, and communicate business value to leaders and executives. For any project, you can always explain the “why” and how it connects to the organization's mission. This will be demonstrated via presentations at program review meetings and/or program review reports
Project Management: you have experience managing multi-year budgets totaling over $1M, regularly reporting progress to stakeholders, driving schedule, and accelerating projects. You have managed multiple projects, keeping an eye on both the big picture and the details
Proven delivery: you have brought a product from technological readiness level (TRL) 3 to TRL 6 on an accelerated timeline
#LI-TM1 #LI-Onsite
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing\n\nYou will be the Technical Project Manager for projects on the Nuclear Science team, including HERCULES – the Helion External Research Collaboration for Universities, Labs, and Enterprise Scientists. Through HERCULES, Helion will fund impactful research at universities, national labs, and research companies, totaling over $20M over three years in a phased approach. As administrator for this program, you will review proposals, work with Helion's business teams and the awardee to go from proposal to funded project, then guide the technical work in partnership with internal PIs through the lifecycle of the project. Your superpower will be technical breadth, ensuring scientific alignment with Helion's objectives. This is an onsite role that reports directly to Director of Nuclear Science at our Everett, WA office.\n\nYou Will\n\n - Lead the HERCULES program, totaling over $20M over three years\n\n - Work on the cutting edge of research, contributing to the breadth of Helion's science and R&D spanning nuclear, materials, fuel, and pulsed power science. You will partner with internal PIs across all of Helion's technical teams\n\n - Evaluate proposal submissions, quickly navigate contracts, disperse funds to research partners, guide technical work, and ensure on-track deliverables\n\n - Communicate externally to potential partners to advertise the program, and internally to leaders and executives on progress and impact. You will be the bridge between Helion leadership, PIs, and business units, and those of our partners\n\n - Teach our partners how to move fast and accelerate. You will find their largest blockers – supply chain, legal, and technical and solve them\n\n - Jump in and ensure the delivery of internal Nuclear Science projects in parallel to external projects\n\nRequired Skills\n\n - Research Experience: you have a PhD in science or engineering, or equivalent experience delivering impactful research through the scientific lifecycle in an academic or national lab setting\n\n - Technical breadth: as the leader of this program, you have the technical skillset to understand projects spanning nuclear science, materials science, chemical engineering, experimental and computational plasma physics, and electrical engineering (pulsed power). This will be demonstrated by the delivery of multidisciplinary projects and/or publications spanning multiple discipline\n\n - Communication: you can talk to scientists and business executives. You can condense information into short memos, understand key information from technical reports, and communicate business value to leaders and executives. For any project, you can always explain the “why” and how it connects to the organization's mission. This will be demonstrated via presentations at program review meetings and/or program review reports\n\n - Project Management: you have experience managing multi-year budgets totaling over $1M, regularly reporting progress to stakeholders, driving schedule, and accelerating projects. You have managed multiple projects, keeping an eye on both the big picture and the details\n\n - Proven delivery: you have brought a product from technological readiness level (TRL) 3 to TRL 6 on an accelerated timeline\n\n#LI-TM1 #LI-Onsite \n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"dd981d5d-f9ad-432b-ae48-f408ba60a45f","title":"Senior Engineering Technician, Electrical Engineering","department":"Production","team":"Production","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-10T23:02:23.176+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/dd981d5d-f9ad-432b-ae48-f408ba60a45f","applyUrl":"https://jobs.ashbyhq.com/helion/dd981d5d-f9ad-432b-ae48-f408ba60a45f/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
As a Senior Engineering Technician at Helion, you will lead the build, integration, and troubleshooting of complex electromechanical systems that support our fusion generators and pulsed power architecture. You will drive execution across system builds while independently diagnosing issues and ensuring hardware meets performance, safety, and quality expectations.
You will operate at the interface of design engineering and production, translating evolving designs into executable builds by developing processes, tooling, and work instructions. Your work enables rapid hardware iteration, improves first-pass yield, and establishes repeatable, scalable build practices.
You will also elevate team capability by mentoring technicians, driving troubleshooting rigor, and reinforcing high standards of execution.
This is a hands-on role reporting to the Production Supervisor and working closely with Design Engineers, Test Engineers, and Production leadership. This is an onsite role located at our Everett, WA office.
You Will:
Lead assembly, integration, and bring-up of complex electromechanical systems, including full-system builds
Independently diagnose electrical, mechanical, and system-level failures using schematics, instrumentation, and structured troubleshooting methods
Develop and standardize work instructions, build processes, and test procedures for repeatable execution
Partner closely with engineers during prototype development, supporting rapid iteration and real-time design changes
Design and fabricate fixtures, jigs, and test setups to improve build quality and efficiency
Drive root cause analysis on failures, implement corrective actions, and reduce recurrence of failures
Mentor technicians on troubleshooting, execution standards, and safe operating practices
Identify gaps and inefficiencies in build and test workflows and drive improvements
Uphold safety, quality, and execution standards in high-voltage and high-energy environments
Required Skills:
5+ years hands-on experience building, integrating, and troubleshooting electrical or electromechanical systems
Strong diagnostic capability using schematics, instrumentation, and signal tracing
Proficiency with lab instrumentation (oscilloscopes, power supplies, DAQ, etc.)
Experience working in prototype, R&D, or high-mix production environments
Ability to interpret and apply complex technical documentation at the bench
Demonstrated leadership in execution, including mentoring technicians or leading builds
#LI-Onsite
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nAs a Senior Engineering Technician at Helion, you will lead the build, integration, and troubleshooting of complex electromechanical systems that support our fusion generators and pulsed power architecture. You will drive execution across system builds while independently diagnosing issues and ensuring hardware meets performance, safety, and quality expectations.\n\nYou will operate at the interface of design engineering and production, translating evolving designs into executable builds by developing processes, tooling, and work instructions. Your work enables rapid hardware iteration, improves first-pass yield, and establishes repeatable, scalable build practices.\n\nYou will also elevate team capability by mentoring technicians, driving troubleshooting rigor, and reinforcing high standards of execution.\n\nThis is a hands-on role reporting to the Production Supervisor and working closely with Design Engineers, Test Engineers, and Production leadership. This is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Lead assembly, integration, and bring-up of complex electromechanical systems, including full-system builds\n\n - Independently diagnose electrical, mechanical, and system-level failures using schematics, instrumentation, and structured troubleshooting methods\n\n - Develop and standardize work instructions, build processes, and test procedures for repeatable execution\n\n - Partner closely with engineers during prototype development, supporting rapid iteration and real-time design changes\n\n - Design and fabricate fixtures, jigs, and test setups to improve build quality and efficiency\n\n - Drive root cause analysis on failures, implement corrective actions, and reduce recurrence of failures\n\n - Mentor technicians on troubleshooting, execution standards, and safe operating practices\n\n - Identify gaps and inefficiencies in build and test workflows and drive improvements\n\n - Uphold safety, quality, and execution standards in high-voltage and high-energy environments\n\nRequired Skills:\n\n - 5+ years hands-on experience building, integrating, and troubleshooting electrical or electromechanical systems\n\n - Strong diagnostic capability using schematics, instrumentation, and signal tracing\n\n - Proficiency with lab instrumentation (oscilloscopes, power supplies, DAQ, etc.)\n\n - Experience working in prototype, R&D, or high-mix production environments\n\n - Ability to interpret and apply complex technical documentation at the bench\n\n - Demonstrated leadership in execution, including mentoring technicians or leading builds\n\n#LI-Onsite\n\n\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"de3f4ad2-27f1-47b2-98b1-fc8eb492bd45","title":"Senior Materials Chemist","department":"Material Science","team":"Material Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-04-07T22:22:44.836+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/de3f4ad2-27f1-47b2-98b1-fc8eb492bd45","applyUrl":"https://jobs.ashbyhq.com/helion/de3f4ad2-27f1-47b2-98b1-fc8eb492bd45/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will own the chemistry-driven understanding of how coolants and process fluids interact with materials and components. You will quantify degradation mechanisms, define compatibility limits, and develop practical mitigation strategies that improve system reliability and lifetime.
This role sits at the intersection of chemistry, materials science, and hardware engineering, and directly impacts the performance and durability of Helion's fusion systems. You will report to the Materials Science Manager and this is an onsite role located at our Everett, WA office.
You Will:
Quantify coolant-driven degradation and failure
Design and execute experimental programs to evaluate coolant and fluid impacts on materials, including corrosion, erosion, deposition/retention, polymer swelling/attack, and contamination transport
Develop test conditions that reflect relevant operating environments (temperature, pressure, flow, impurity levels, and cycling)
Develop and validate mitigation strategies
Drive cross-functional integration and execution
Required Skills:
MS or PhD in Chemistry, Materials Chemistry, Corrosion Science, Chemical Engineering, or a related field (or equivalent practical experience)
5+ years of experience in corrosion/electrochemistry, coolant or process fluid chemistry, materials compatibility testing, or degradation and failure analysis in demanding environments
Demonstrated ability to design experiments, analyze multi-variable datasets, and communicate actionable results to engineering teams
#LI-Onsite #LI-TS1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will own the chemistry-driven understanding of how coolants and process fluids interact with materials and components. You will quantify degradation mechanisms, define compatibility limits, and develop practical mitigation strategies that improve system reliability and lifetime.\n\nThis role sits at the intersection of chemistry, materials science, and hardware engineering, and directly impacts the performance and durability of Helion's fusion systems. You will report to the Materials Science Manager and this is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Quantify coolant-driven degradation and failure\n\n - Design and execute experimental programs to evaluate coolant and fluid impacts on materials, including corrosion, erosion, deposition/retention, polymer swelling/attack, and contamination transport\n\n - Develop test conditions that reflect relevant operating environments (temperature, pressure, flow, impurity levels, and cycling)\n\n - Develop and validate mitigation strategies\n\n - Drive cross-functional integration and execution\n\nRequired Skills:\n\n - MS or PhD in Chemistry, Materials Chemistry, Corrosion Science, Chemical Engineering, or a related field (or equivalent practical experience)\n\n - 5+ years of experience in corrosion/electrochemistry, coolant or process fluid chemistry, materials compatibility testing, or degradation and failure analysis in demanding environments\n\n - Demonstrated ability to design experiments, analyze multi-variable datasets, and communicate actionable results to engineering teams\n\n#LI-Onsite #LI-TS1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"e22479a1-1707-47c3-9dad-c07db50de815","title":"Experimental Scientist","department":"Science","team":"Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-24T18:45:22.612+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/e22479a1-1707-47c3-9dad-c07db50de815","applyUrl":"https://jobs.ashbyhq.com/helion/e22479a1-1707-47c3-9dad-c07db50de815/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
Helion is hiring an Experimental Scientist to support the development, deployment, calibration, and operation of plasma diagnostics for Helion’s fusion generators. In this role, you will contribute to hands-on experimental work across plasma diagnostics, test campaigns, and high-vacuum systems while partnering closely with scientists, engineers, machine operators, and data teams. This is an onsite role that reports directly to our Director of Plasma and Nuclear Science at our Everett, WA office.
You Will:
Support the design, build, deployment, calibration, and commissioning of plasma diagnostic systems for Helion’s fusion generators, operating with autonomy on defined tasks and workstreams while escalating technical risks or tradeoffs when appropriate
Contribute to the operation and troubleshooting of plasma diagnostics used to evaluate plasma parameters such as density, temperature, current profiles, and other key performance indicators
Work cross-functionally with plasma physics, machine operations, controls, mechanical engineering, electrical engineering, and data science teams to support diagnostic readiness for experimental campaigns and testbeds
Develop hands-on expertise in pre-ionization plasma diagnostics, helping establish consistent methods and practices that support next-generation fusion device development
Analyze diagnostic data to identify trends, support experimental interpretation, and inform operational tuning, hardware improvements, or follow-up testing
Document experimental procedures, calibration methods, test results, and lessons learned to improve consistency, reliability, and knowledge sharing across Helion’s experimental programs
Required Skills:
Ph.D. in physics, electrical engineering, aerospace engineering, or a related discipline, with a focus on plasma science, diagnostics, or high-vacuum instrumentation
Relevant hands-on experience with plasma systems, advanced laboratory environments, high-vacuum systems, pulsed-power systems, or complex experimental hardware
Experience supporting the design, build, calibration, troubleshooting, or operation of plasma diagnostics such as interferometry, spectroscopy, Langmuir probes, magnetic coils, electrostatic diagnostics, optical diagnostics, or related measurement systems
Ability to operate autonomously on day-to-day technical tasks, apply critical thinking across multiple inputs, and escalate issues appropriately when technical risk, scope, or priority requires broader alignment
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nHelion is hiring an Experimental Scientist to support the development, deployment, calibration, and operation of plasma diagnostics for Helion’s fusion generators. In this role, you will contribute to hands-on experimental work across plasma diagnostics, test campaigns, and high-vacuum systems while partnering closely with scientists, engineers, machine operators, and data teams. This is an onsite role that reports directly to our Director of Plasma and Nuclear Science at our Everett, WA office.\n\nYou Will:\n\n - Support the design, build, deployment, calibration, and commissioning of plasma diagnostic systems for Helion’s fusion generators, operating with autonomy on defined tasks and workstreams while escalating technical risks or tradeoffs when appropriate\n\n - Contribute to the operation and troubleshooting of plasma diagnostics used to evaluate plasma parameters such as density, temperature, current profiles, and other key performance indicators\n\n - Work cross-functionally with plasma physics, machine operations, controls, mechanical engineering, electrical engineering, and data science teams to support diagnostic readiness for experimental campaigns and testbeds\n\n - Develop hands-on expertise in pre-ionization plasma diagnostics, helping establish consistent methods and practices that support next-generation fusion device development\n\n - Analyze diagnostic data to identify trends, support experimental interpretation, and inform operational tuning, hardware improvements, or follow-up testing\n\n - Document experimental procedures, calibration methods, test results, and lessons learned to improve consistency, reliability, and knowledge sharing across Helion’s experimental programs\n\nRequired Skills:\n\n - Ph.D. in physics, electrical engineering, aerospace engineering, or a related discipline, with a focus on plasma science, diagnostics, or high-vacuum instrumentation\n\n - Relevant hands-on experience with plasma systems, advanced laboratory environments, high-vacuum systems, pulsed-power systems, or complex experimental hardware\n\n - Experience supporting the design, build, calibration, troubleshooting, or operation of plasma diagnostics such as interferometry, spectroscopy, Langmuir probes, magnetic coils, electrostatic diagnostics, optical diagnostics, or related measurement systems\n\n - Ability to operate autonomously on day-to-day technical tasks, apply critical thinking across multiple inputs, and escalate issues appropriately when technical risk, scope, or priority requires broader alignment\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"e42c934d-0271-4071-b722-5e0edcad6495","title":"Senior Technologist - Materials","department":"Material Science","team":"Material Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-05-06T22:47:08.824+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/e42c934d-0271-4071-b722-5e0edcad6495","applyUrl":"https://jobs.ashbyhq.com/helion/e42c934d-0271-4071-b722-5e0edcad6495/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will apply advanced technical expertise to support engineering research, development, and manufacturing through hands-on materials testing, analytical system operation, and precision fabrication. In this role, you will independently execute complex test workflows, configure and maintain equipment, and troubleshoot technical issues to ensure diagnostic readiness and high-quality results. You will collaborate closely with engineers to translate test requirements into reliable, real-world setups, while using critical thinking and sound judgment to solve problems and improve processes. You will also mentor junior Technologists and communicate findings through clear data analysis and reporting that informs engineering decisions.
You Will:
Operate, maintain, and troubleshoot materials testing and analytical equipment, including load frames, profilometers, durometers, microscopy systems, and SEM
Execute test plans in accordance with ASTM standards or collaborate with engineers to develop custom test methodologies, including sample preparation, fixturing, and data analysis
Configure and validate test setups to ensure accurate, repeatable results and alignment with engineering intent
Document procedures, calibration activities, and test results with clarity and discipline to support quality and traceability
Analyze and communicate data effectively to inform design decisions and improve system performance
Lead troubleshooting efforts across mechanical systems, instrumentation, and workflows, identifying root causes and implementing corrective actions
Design and fabricate fixtures and components to support testing needs, ensuring precision and reliability
Provide mentorship and technical guidance to early career Technologists on equipment operation, fabrication techniques, and safe work practices
Develop working knowledge of radiation safety practices, including contamination control, monitoring techniques, and controlled-area workflows
Partner with engineers to interpret requirements and translate them into robust testing processes that generate meaningful performance data
Required Skills:
8+ years of hands-on experience operating mechanical testing systems and analytical instrumentation in a similar technical environment
Strong proficiency in materials testing equipment and imaging tools, including mechanical test frames and microscopy systems
Extensive hands-on fabrication experience, including fixture design, assembly, and precision measurement
Demonstrated ability to execute structured test workflows and produce reliable, high-quality data
Experience troubleshooting complex mechanical and instrumentation issues, with the ability to independently identify root causes and drive solutions
Strong technical documentation skills, with attention to procedural rigor, calibration standards, and quality control
Ability to collaborate effectively with engineers to translate design intent into practical testing solutions
Familiarity with controlled, high-risk, or radiological environments is preferred, including adherence to safety and contamination control protocols
Strong critical thinking, problem-solving, and decision-making skills in fast-paced technical environments
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will apply advanced technical expertise to support engineering research, development, and manufacturing through hands-on materials testing, analytical system operation, and precision fabrication. In this role, you will independently execute complex test workflows, configure and maintain equipment, and troubleshoot technical issues to ensure diagnostic readiness and high-quality results. You will collaborate closely with engineers to translate test requirements into reliable, real-world setups, while using critical thinking and sound judgment to solve problems and improve processes. You will also mentor junior Technologists and communicate findings through clear data analysis and reporting that informs engineering decisions.\n\nYou Will:\n\n - Operate, maintain, and troubleshoot materials testing and analytical equipment, including load frames, profilometers, durometers, microscopy systems, and SEM\n\n - Execute test plans in accordance with ASTM standards or collaborate with engineers to develop custom test methodologies, including sample preparation, fixturing, and data analysis\n\n - Configure and validate test setups to ensure accurate, repeatable results and alignment with engineering intent\n\n - Document procedures, calibration activities, and test results with clarity and discipline to support quality and traceability\n\n - Analyze and communicate data effectively to inform design decisions and improve system performance\n\n - Lead troubleshooting efforts across mechanical systems, instrumentation, and workflows, identifying root causes and implementing corrective actions\n\n - Design and fabricate fixtures and components to support testing needs, ensuring precision and reliability\n\n - Provide mentorship and technical guidance to early career Technologists on equipment operation, fabrication techniques, and safe work practices\n\n - Develop working knowledge of radiation safety practices, including contamination control, monitoring techniques, and controlled-area workflows\n\n - Partner with engineers to interpret requirements and translate them into robust testing processes that generate meaningful performance data\n\nRequired Skills:\n\n - 8+ years of hands-on experience operating mechanical testing systems and analytical instrumentation in a similar technical environment\n\n - Strong proficiency in materials testing equipment and imaging tools, including mechanical test frames and microscopy systems\n\n - Extensive hands-on fabrication experience, including fixture design, assembly, and precision measurement\n\n - Demonstrated ability to execute structured test workflows and produce reliable, high-quality data\n\n - Experience troubleshooting complex mechanical and instrumentation issues, with the ability to independently identify root causes and drive solutions\n\n - Strong technical documentation skills, with attention to procedural rigor, calibration standards, and quality control\n\n - Ability to collaborate effectively with engineers to translate design intent into practical testing solutions\n\n - Familiarity with controlled, high-risk, or radiological environments is preferred, including adherence to safety and contamination control protocols\n\n - Strong critical thinking, problem-solving, and decision-making skills in fast-paced technical environments\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"e5cd14f6-e6da-4437-808a-b8b4c284263d","title":"R&D Hardware Test & Development Manager","department":"Research & Development ","team":"Research & Development ","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-02-13T22:42:43.048+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/e5cd14f6-e6da-4437-808a-b8b4c284263d","applyUrl":"https://jobs.ashbyhq.com/helion/e5cd14f6-e6da-4437-808a-b8b4c284263d/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
As the R&D Hardware Test & Development Manager, you will manage a diverse team of R&D engineers with a broad array of technical backgrounds and expertise, whose mission is to collaboratively support the development, testing, and delivery of the technology needed to provide fusion energy to the world.
Your team works closely with all other technical organizations including Engineering, Production, Radiation and Nuclear Safety, and Science. R&D Dev Ops engineers drive testing and development initiatives needed to close and validate engineering designs and advance next generation technologies. Projects range from pulsed HV testing of electromagnets to materials characterization in high radiation environments. You will report to our R&D manager, onsite at our Everett, WA office.
You Will:
Oversee the design and execution of technology test and development initiatives, allocating engineering bandwidth and ownership as needed to ensure the team is delivering testing results on time and to sufficient rigor.
Partner with peer leaders to drive cross-functional development initiatives, setting the standard for effective collaboration and ensuring communication across teams meets a high bar.
Champion your team's initiatives with senior leaders, clearly articulating their value and securing stakeholder alignment and buy-in.
Support individual contributors in their career growth, guiding development of both technical and soft skills.
Proactively identify resource constraints and scale the team through targeted hiring and growth to ensure mission success.
Required Skills:
B.S. in Physics or Engineering and 8+ years or M.S. with 4+ years of relevant experience
Minimum 2+ years managing engineers doing technology testing and development
Experience using first principles thinking to develop test initiatives, perform root cause failure analysis, and solve complex technical problems
Proven track record of delivering technology testing and development results
Experienced at driving rapid iterative testing to inform design
Excellent communication skills that drive effective cross-team collaboration
Ability to anticipate, strategically plan for and grow a team to meet the needs of future scope
Preferred Skills:
Technical expertise in one of the following areas: vacuum systems, pressurized systems, high-voltage systems, or pulsed-power technologies
#LI-Onsite #LI-TM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nAs the R&D Hardware Test & Development Manager, you will manage a diverse team of R&D engineers with a broad array of technical backgrounds and expertise, whose mission is to collaboratively support the development, testing, and delivery of the technology needed to provide fusion energy to the world.\n\nYour team works closely with all other technical organizations including Engineering, Production, Radiation and Nuclear Safety, and Science. R&D Dev Ops engineers drive testing and development initiatives needed to close and validate engineering designs and advance next generation technologies. Projects range from pulsed HV testing of electromagnets to materials characterization in high radiation environments. You will report to our R&D manager, onsite at our Everett, WA office.\n\nYou Will:\n\n - Oversee the design and execution of technology test and development initiatives, allocating engineering bandwidth and ownership as needed to ensure the team is delivering testing results on time and to sufficient rigor.\n\n - Partner with peer leaders to drive cross-functional development initiatives, setting the standard for effective collaboration and ensuring communication across teams meets a high bar.\n\n - Champion your team's initiatives with senior leaders, clearly articulating their value and securing stakeholder alignment and buy-in.\n\n - Support individual contributors in their career growth, guiding development of both technical and soft skills.\n\n - Proactively identify resource constraints and scale the team through targeted hiring and growth to ensure mission success.\n\nRequired Skills:\n\n - B.S. in Physics or Engineering and 8+ years or M.S. with 4+ years of relevant experience\n\n - Minimum 2+ years managing engineers doing technology testing and development\n\n - Experience using first principles thinking to develop test initiatives, perform root cause failure analysis, and solve complex technical problems\n\n - Proven track record of delivering technology testing and development results\n\n - Experienced at driving rapid iterative testing to inform design\n\n - Excellent communication skills that drive effective cross-team collaboration\n\n - Ability to anticipate, strategically plan for and grow a team to meet the needs of future scope\n\nPreferred Skills:\n\n - Technical expertise in one of the following areas: vacuum systems, pressurized systems, high-voltage systems, or pulsed-power technologies\n\n#LI-Onsite #LI-TM1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"e8619c78-6292-4690-90f1-07aa2267f592","title":"Senior Manager Mechanical Engineering, Modules","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-04-03T19:54:46.790+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/e8619c78-6292-4690-90f1-07aa2267f592","applyUrl":"https://jobs.ashbyhq.com/helion/e8619c78-6292-4690-90f1-07aa2267f592/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will lead the mechanical hardware design efforts for Helion’s fusion devices. Your role will focus on solving complex, high-impact problems that influence system performance, while also growing a high-performing engineering team. You will establish technical standards, drive execution, and shape design processes to increase the speed and quality of innovation. You will report to the Director of Mechanical Engineering and this is an onsite role located at our Everett, WA office.
You Will:
Grow and mentor a team of multidisciplinary mechanical engineers
Oversee design of machine architecture, high-performance pulsed power mechanical systems, structural designs, and thermal management systems
Drive schedule ownership and optimization across the team to accelerate milestones
Lead design, analysis, and manufacturing process improvements to increase reliability, performance, and throughput
Collaborate with Electrical, Research, Science, and Controls teams to derive requirements and meet program goals
Required Skills:
Bachelor’s degree in Engineering
10+ years of engineering experience, including 3+ years in an engineering management role
Demonstrated ability to grow engineers and impact career development
Experience leading multidisciplinary teams with full-scope project ownership
Proven ability to manage complex engineering projects with schedule accountability
Hands-on exposure to multiple engineering disciplines such as mechanical, electrical, and fluids
Ability to apply engineering first-principles and structured problem-solving to technical challenges
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\nYou will lead the mechanical hardware design efforts for Helion’s fusion devices. Your role will focus on solving complex, high-impact problems that influence system performance, while also growing a high-performing engineering team. You will establish technical standards, drive execution, and shape design processes to increase the speed and quality of innovation. You will report to the Director of Mechanical Engineering and this is an onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Grow and mentor a team of multidisciplinary mechanical engineers\n\n - Oversee design of machine architecture, high-performance pulsed power mechanical systems, structural designs, and thermal management systems\n\n - Drive schedule ownership and optimization across the team to accelerate milestones\n\n - Lead design, analysis, and manufacturing process improvements to increase reliability, performance, and throughput\n\n - Collaborate with Electrical, Research, Science, and Controls teams to derive requirements and meet program goals\n\nRequired Skills:\n\n - Bachelor’s degree in Engineering\n\n - 10+ years of engineering experience, including 3+ years in an engineering management role\n\n - Demonstrated ability to grow engineers and impact career development\n\n - Experience leading multidisciplinary teams with full-scope project ownership\n\n - Proven ability to manage complex engineering projects with schedule accountability\n\n - Hands-on exposure to multiple engineering disciplines such as mechanical, electrical, and fluids\n\n - Ability to apply engineering first-principles and structured problem-solving to technical challenges\n \n #LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"e8e70c75-ebb7-4c93-8b9d-b0cf076a293d","title":"Capacitor R&D Supervisor ","department":"Capacitor Manufacturing","team":"Capacitor Manufacturing","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-03-04T23:18:15.822+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/e8e70c75-ebb7-4c93-8b9d-b0cf076a293d","applyUrl":"https://jobs.ashbyhq.com/helion/e8e70c75-ebb7-4c93-8b9d-b0cf076a293d/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing
This is a newly created role driven by rapid growth and increasing R&D demand. It’s a unique opportunity to join at a pivotal moment, helping shape how capacitor technologies scale from development into manufacturing while building the systems, teams, and processes that will define future success. You will lead the execution of capacitor R&D builds and pilot manufacturing, translating evolving engineering concepts into safe, repeatable processes. In this role, you will serve as a critical bridge between R&D and production, identifying manufacturability risks early, driving process improvements, and ensuring new technologies are ready to scale.
This role will provide leadership and operational oversight for a growing team of Engineering Technicians supporting first-shift manufacturing and R&D activities (Monday - Friday, 6:00 AM - 2:30 PM).
You Will
Responsible for R&D builds, prototypes, and pilot runs to meet aggressive development timelines
Translate engineering intent into practical, high-quality manufacturing processes
Make real-time technical decisions in fast-paced, ambiguous development environments
Analyze data to identify process gaps, risks, and opportunities for improvement
Lead and develop a team of Engineering Technicians, building capability and accountability
Partner with engineering, production, and EHS to ensure aligned, safe, and effective execution
Drive readiness for manufacturing through documentation, process definition, and knowledge transfer
Required Skills
5+ years in manufacturing, R&D, or technical operations, including hands-on process development or NPI
2+ years leading or supervising technical teams in fast-paced environments
Proven ability to troubleshoot and improve manufacturing processes under ambiguity
Strong data-driven mindset with the ability to translate results into actionable improvements
Experience working closely with engineering teams on early stage or rapidly evolving technologies
Ability to adapt schedule and onsite presence to support team leadership, cross-functional coordination, and critical development activities
Strong communication, organization, and execution skills
#LI-Onsite
#LI-TS1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing\nThis is a newly created role driven by rapid growth and increasing R&D demand. It’s a unique opportunity to join at a pivotal moment, helping shape how capacitor technologies scale from development into manufacturing while building the systems, teams, and processes that will define future success. You will lead the execution of capacitor R&D builds and pilot manufacturing, translating evolving engineering concepts into safe, repeatable processes. In this role, you will serve as a critical bridge between R&D and production, identifying manufacturability risks early, driving process improvements, and ensuring new technologies are ready to scale.\n\nThis role will provide leadership and operational oversight for a growing team of Engineering Technicians supporting first-shift manufacturing and R&D activities (Monday - Friday, 6:00 AM - 2:30 PM).\n\nYou Will\n\n - Responsible for R&D builds, prototypes, and pilot runs to meet aggressive development timelines\n\n - Translate engineering intent into practical, high-quality manufacturing processes\n\n - Make real-time technical decisions in fast-paced, ambiguous development environments\n\n - Analyze data to identify process gaps, risks, and opportunities for improvement\n\n - Lead and develop a team of Engineering Technicians, building capability and accountability\n\n - Partner with engineering, production, and EHS to ensure aligned, safe, and effective execution\n\n - Drive readiness for manufacturing through documentation, process definition, and knowledge transfer\n\nRequired Skills\n\n - 5+ years in manufacturing, R&D, or technical operations, including hands-on process development or NPI\n\n - 2+ years leading or supervising technical teams in fast-paced environments\n\n - Proven ability to troubleshoot and improve manufacturing processes under ambiguity\n\n - Strong data-driven mindset with the ability to translate results into actionable improvements\n\n - Experience working closely with engineering teams on early stage or rapidly evolving technologies\n\n - Ability to adapt schedule and onsite presence to support team leadership, cross-functional coordination, and critical development activities\n\n - Strong communication, organization, and execution skills\n\n#LI-Onsite\n\n#LI-TS1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"e903954d-8e1b-4dd8-86b1-30c0e42204ac","title":"Principal Process Engineer, Fuel Cycle","department":"Fuel Cycle","team":"Fuel Cycle","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-04-27T20:58:16.296+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/e903954d-8e1b-4dd8-86b1-30c0e42204ac","applyUrl":"https://jobs.ashbyhq.com/helion/e903954d-8e1b-4dd8-86b1-30c0e42204ac/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You’ll Be Doing:
You will be at the forefront of designing the world’s first continuous fusion fuel cycle – an opportunity to redefine the future of clean energy for the modern world. This role operates at the intersection of process design, system integration, and program strategy, owning the performance, scalability, and operability of the fuel cycle across its full lifecycle. You'll work collaboratively with Engineering, Science, R&D, Operations, and Leadership, serving as a technical authority focused on setting design direction, resolving first-of-a-kind engineering challenges, and delivering critical systems for an integrated, closed-loop fuel cycle. You will report to the Fuel Cycle Manager and work onsite at our Everett, WA office.
You Will:
Own delivery of major fuel cycle systems from concept through integration, including process design, procurement, installation, and commissioning
Define plant-level fuel cycle philosophy and tradeoffs, including operational approach, throughput, energy usage, holdup inventories, and safety across fuel cycle systems
Utilize first-principles analysis, modeling, and rigorous simulation tools to evaluate steady-state, dynamic, and fault scenarios to ensure design operability
Set technical direction for and guide detailed design of process equipment (e.g., columns, reactors, membranes, heaters, exchangers, pumps, and piping) across ambient, high-temp, cryogenic, and vacuum conditions
Develop and maintain core engineering design deliverables (PFDs, P&IDs, H&MBs, HAZOPs, and sizing calculations), ensuring technical rigor and consistency across the program
Drive cross-functional alignment across Science, R&D, EHS, Fuel Cycle Operations, and Plant Engineering to deliver a cohesive and scalable fuel cycle
Lead high-level design reviews as the decision authority, resolving complex technical issues and ensuring alignment with program goals
Ensure technical rigor and alignment of detailed engineering work across team process designs (e.g., columns, reactors, membranes, cryogenic and vacuum systems)
Mentor and develop senior engineers, establish engineering best practices, and shape team capability and technical standards
Represent Helion as a technical authority in external engagements, communicating fuel cycle architecture, design decisions, and program direction through industry forums, conferences, and publications
Required Skills:
Bachelor’s or Master’s degree in Chemical Engineering, Mechanical Engineering, Nuclear Engineering, or related field; advanced degree preferred
12+ years of experience in chemical process design, translating process concepts into first-of-a-kind hardware
Deep technical expertise in transport phenomena (mass, heat, and momentum), thermodynamics, and reaction engineering applied to complex process systems
Decomposition of complex problems into fundamental physical principles, process objectives, and operational constraints to develop solutions grounded in first-principles reasoning
Demonstrated ownership of large-scale integrated systems, defining requirements and driving clarity in ambiguous problem spaces
Demonstrated accountability leading multi-disciplinary efforts and making system-level decisions with significant program impact
Accountable as the technical authority for a technology domain, with expertise in relevant-to-fusion fuel cycle engineering, such as isotope separation, impurity separation, tritium handling, cryogenic systems, or vacuum systems
#LI-Onsite #LI-TM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You’ll Be Doing:\n\nYou will be at the forefront of designing the world’s first continuous fusion fuel cycle – an opportunity to redefine the future of clean energy for the modern world. This role operates at the intersection of process design, system integration, and program strategy, owning the performance, scalability, and operability of the fuel cycle across its full lifecycle. You'll work collaboratively with Engineering, Science, R&D, Operations, and Leadership, serving as a technical authority focused on setting design direction, resolving first-of-a-kind engineering challenges, and delivering critical systems for an integrated, closed-loop fuel cycle. You will report to the Fuel Cycle Manager and work onsite at our Everett, WA office.\n\nYou Will:\n\n - Own delivery of major fuel cycle systems from concept through integration, including process design, procurement, installation, and commissioning\n\n - Define plant-level fuel cycle philosophy and tradeoffs, including operational approach, throughput, energy usage, holdup inventories, and safety across fuel cycle systems\n\n - Utilize first-principles analysis, modeling, and rigorous simulation tools to evaluate steady-state, dynamic, and fault scenarios to ensure design operability\n\n - Set technical direction for and guide detailed design of process equipment (e.g., columns, reactors, membranes, heaters, exchangers, pumps, and piping) across ambient, high-temp, cryogenic, and vacuum conditions\n\n - Develop and maintain core engineering design deliverables (PFDs, P&IDs, H&MBs, HAZOPs, and sizing calculations), ensuring technical rigor and consistency across the program\n\n - Drive cross-functional alignment across Science, R&D, EHS, Fuel Cycle Operations, and Plant Engineering to deliver a cohesive and scalable fuel cycle\n\n - Lead high-level design reviews as the decision authority, resolving complex technical issues and ensuring alignment with program goals\n\n - Ensure technical rigor and alignment of detailed engineering work across team process designs (e.g., columns, reactors, membranes, cryogenic and vacuum systems)\n\n - Mentor and develop senior engineers, establish engineering best practices, and shape team capability and technical standards\n\n - Represent Helion as a technical authority in external engagements, communicating fuel cycle architecture, design decisions, and program direction through industry forums, conferences, and publications\n\nRequired Skills:\n\n - Bachelor’s or Master’s degree in Chemical Engineering, Mechanical Engineering, Nuclear Engineering, or related field; advanced degree preferred\n\n - 12+ years of experience in chemical process design, translating process concepts into first-of-a-kind hardware\n\n - Deep technical expertise in transport phenomena (mass, heat, and momentum), thermodynamics, and reaction engineering applied to complex process systems\n\n - Decomposition of complex problems into fundamental physical principles, process objectives, and operational constraints to develop solutions grounded in first-principles reasoning\n\n - Demonstrated ownership of large-scale integrated systems, defining requirements and driving clarity in ambiguous problem spaces\n\n - Demonstrated accountability leading multi-disciplinary efforts and making system-level decisions with significant program impact\n\n - Accountable as the technical authority for a technology domain, with expertise in relevant-to-fusion fuel cycle engineering, such as isotope separation, impurity separation, tritium handling, cryogenic systems, or vacuum systems\n\n#LI-Onsite #LI-TM1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"eb9a8d09-05ab-4f6a-a896-848deeec6f65","title":"Fuel Cycle Operations Engineer","department":"Fuel Cycle","team":"Fuel Cycle","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-05T20:05:10.087+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/eb9a8d09-05ab-4f6a-a896-848deeec6f65","applyUrl":"https://jobs.ashbyhq.com/helion/eb9a8d09-05ab-4f6a-a896-848deeec6f65/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
We are hiring a Fuel Cycle Operations Engineer to commission, operate, test, and evaluate process equipment for Helion’s fusion fuel cycles. You will support Polaris operations and lead testing and evaluation of fuel cycle technologies and processes, including fuel balancing, isotope separation, water detritiation, and helium separation. Following alignment on the fuel cycle technology approach, you will also own commissioning of fuel cycle design units for Orion. You will report directly to the Fuel Cycle Operations Lead at our Everett, WA office.
You Will:
Perform operations supporting Polaris including fueling, exhaust processing, and purification
Become a Tritium Authorized User to safely lead testing, commissioning and startup operations involving radioactive materials
Collaborate with our design teams to validate scalable fuel cycle processes through hands-on R&D activities, including system buildout, experimental testing and data analysis
Provide remote and eventual onsite commissioning support for fuel cycle processes in the world’s first fusion power plant, located in Malaga, WA
Develop maintenance strategies and processes to enable fuel cycle system reliability through the operational lifecycle
Required Skills:
Bachelor’s in Chemical/Nuclear/Mechanical Engineering, or equivalent on the job experience
5+ years of experience in an Engineering or Operations roles
Strong understanding of operation theory including heat and mass balances, fluid flow, instrumentation, controls, safety, and P&IDs/PFDs
Demonstrated experience designing and leading test campaigns to gather key data, ultimately elucidating fundamental system behavior
Demonstrated experience commissioning, operating, and troubleshooting issues in operating plant environment
Preferred Skills:
Experience with hydrogen or tritium systems, helium isotope separation, vacuum and cryogenic processes, gas analytics, elemental separation, and/or related process technologies
#LI-Onsite #LI-TM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nWe are hiring a Fuel Cycle Operations Engineer to commission, operate, test, and evaluate process equipment for Helion’s fusion fuel cycles. You will support Polaris operations and lead testing and evaluation of fuel cycle technologies and processes, including fuel balancing, isotope separation, water detritiation, and helium separation. Following alignment on the fuel cycle technology approach, you will also own commissioning of fuel cycle design units for Orion. You will report directly to the Fuel Cycle Operations Lead at our Everett, WA office.\n\nYou Will:\n\n - Perform operations supporting Polaris including fueling, exhaust processing, and purification\n\n - Become a Tritium Authorized User to safely lead testing, commissioning and startup operations involving radioactive materials\n\n - Collaborate with our design teams to validate scalable fuel cycle processes through hands-on R&D activities, including system buildout, experimental testing and data analysis\n\n - Provide remote and eventual onsite commissioning support for fuel cycle processes in the world’s first fusion power plant, located in Malaga, WA\n\n - Develop maintenance strategies and processes to enable fuel cycle system reliability through the operational lifecycle\n\nRequired Skills:\n\n - Bachelor’s in Chemical/Nuclear/Mechanical Engineering, or equivalent on the job experience\n\n - 5+ years of experience in an Engineering or Operations roles\n\n - Strong understanding of operation theory including heat and mass balances, fluid flow, instrumentation, controls, safety, and P&IDs/PFDs\n\n - Demonstrated experience designing and leading test campaigns to gather key data, ultimately elucidating fundamental system behavior\n\n - Demonstrated experience commissioning, operating, and troubleshooting issues in operating plant environment\n\nPreferred Skills:\n\n - Experience with hydrogen or tritium systems, helium isotope separation, vacuum and cryogenic processes, gas analytics, elemental separation, and/or related process technologies\n\n#LI-Onsite #LI-TM1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"f1844ffb-0a67-4152-95c1-93ef595fa422","title":"Senior Materials Engineer, Ceramic Fabrication","department":"Material Science","team":"Material Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-04-06T16:59:59.364+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/f1844ffb-0a67-4152-95c1-93ef595fa422","applyUrl":"https://jobs.ashbyhq.com/helion/f1844ffb-0a67-4152-95c1-93ef595fa422/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will contribute to the fabrication, scale‑up, and deployment of advanced ceramic and CMC components, taking materials from lab‑scale development through small‑scale prototypes to full‑scale functional hardware designed for extreme fusion environments. You will report to the Manager of Nuclear Ceramics, in this onsite role located at our Everett, WA office.
You Will:
Lead high‑impact, multi‑disciplinary projects focused on ceramic processing, forming, densification, and scale‑up for materials operating under fusion generator conditions, including high neutron radiation.
Drive the translation of ceramic materials from laboratory formulations to prototype parts and full‑scale components, ensuring repeatability, performance, and manufacturability at each stage.
Contribute to the delivery of Helion’s inorganic hardware needs, including plasma containment vessels, electrical insulators, resistive components, and structural ceramics, with hands‑on ownership of fabrication methods.
Serve as the internal ceramics fabrication owner, acting as the “go‑to” person for scalable ceramic processing routes, scale‑up risks, vendor capabilities, and production readiness across the company.
Navigate an environment with technical obstacles and evolving requirements, balancing fabrication risk, schedule, and performance without compromising delivery.
Partner with internal Helion teams, external vendors, national laboratories, and universities to develop scalable ceramic fabrication capabilities, qualify processes and suppliers, and close technical gaps.
Represent Helion in technical discussions, supplier reviews, and conferences related to ceramic processing, prototyping, and scale‑up.
Required Skills:
Demonstrated achievement performing bulk and CMCs ceramic process development and fabrication for a material or component used in a commercial product or integral to a large, single‑unit system (e.g., engines, turbines, reactors, or large pressure vessels).
8+ years of industry experience in ceramics or materials engineering, including delivering projects from lab development through prototype fabrication to full‑scale components, including design reviews.
Proven experience planning and executing ceramic component development efforts guided by milestone schedules, with accountability for hardware delivery.
Hands‑on experience with ceramic powder processing, forming, firing, post‑processing, testing, and characterization.
Experience using ceramic processes to produce large ceramic components and implementation of strategies to reduce scale-up risks.
Desired but not required: experience with radiation‑exposed ceramics or extreme environment testing.
A strong bias for action, with the ability to learn through rapid prototyping, hands‑on fabrication, and iterative scale‑up, executing with urgency in high‑uncertainty environments.
#LI-Onsite #LI-TM1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will contribute to the fabrication, scale‑up, and deployment of advanced ceramic and CMC components, taking materials from lab‑scale development through small‑scale prototypes to full‑scale functional hardware designed for extreme fusion environments. You will report to the Manager of Nuclear Ceramics, in this onsite role located at our Everett, WA office.\n\nYou Will:\n\n - Lead high‑impact, multi‑disciplinary projects focused on ceramic processing, forming, densification, and scale‑up for materials operating under fusion generator conditions, including high neutron radiation.\n\n - Drive the translation of ceramic materials from laboratory formulations to prototype parts and full‑scale components, ensuring repeatability, performance, and manufacturability at each stage.\n\n - Contribute to the delivery of Helion’s inorganic hardware needs, including plasma containment vessels, electrical insulators, resistive components, and structural ceramics, with hands‑on ownership of fabrication methods.\n\n - Serve as the internal ceramics fabrication owner, acting as the “go‑to” person for scalable ceramic processing routes, scale‑up risks, vendor capabilities, and production readiness across the company.\n\n - Navigate an environment with technical obstacles and evolving requirements, balancing fabrication risk, schedule, and performance without compromising delivery.\n\n - Partner with internal Helion teams, external vendors, national laboratories, and universities to develop scalable ceramic fabrication capabilities, qualify processes and suppliers, and close technical gaps.\n\n - Represent Helion in technical discussions, supplier reviews, and conferences related to ceramic processing, prototyping, and scale‑up.\n\nRequired Skills:\n\n - Demonstrated achievement performing bulk and CMCs ceramic process development and fabrication for a material or component used in a commercial product or integral to a large, single‑unit system (e.g., engines, turbines, reactors, or large pressure vessels).\n\n - 8+ years of industry experience in ceramics or materials engineering, including delivering projects from lab development through prototype fabrication to full‑scale components, including design reviews.\n\n - Proven experience planning and executing ceramic component development efforts guided by milestone schedules, with accountability for hardware delivery.\n\n - Hands‑on experience with ceramic powder processing, forming, firing, post‑processing, testing, and characterization.\n\n - Experience using ceramic processes to produce large ceramic components and implementation of strategies to reduce scale-up risks.\n\n - Desired but not required: experience with radiation‑exposed ceramics or extreme environment testing.\n\n - A strong bias for action, with the ability to learn through rapid prototyping, hands‑on fabrication, and iterative scale‑up, executing with urgency in high‑uncertainty environments.\n\n#LI-Onsite #LI-TM1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."},{"id":"fde04dc8-a20c-4e0a-b5df-d9904befece3","title":"Magnet Analyst","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-06-17T23:32:01.357+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/fde04dc8-a20c-4e0a-b5df-d9904befece3","applyUrl":"https://jobs.ashbyhq.com/helion/fde04dc8-a20c-4e0a-b5df-d9904befece3/application","descriptionHtml":"About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
You will own hardware designs for Helion's fusion generator prototypes. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. You will report directly to our Engineering Manager at our Everett, WA office.
You Will:
Enhancing Helion’s analysis workflow for critical structures (electromagnets)
Running transient multiphysics finite-element models to generate margins for critical designs
Collaborating with a multidisciplinary engineering team to improve critical hardware designs
Learning from in-house experts to expand your skillset into electrical and thermal analysis
Building software tools to automate the analysis workflow and allow Helion engineers and scientists to run their own analysis
Required Skills:
You have a bachelor’s degree in electrical engineering, applied mathematics, physics or related field with a minimum of 3 years of engineering experience.
Strong background in analytical, computational and numerical simulation methods
A foundation of understanding of electromagnetic and thermal finite element modeling
Experience in taking on analysis problems from formulation through testing and model correlation.
Proficiency with multiphysics finite-element analysis tools such as COSMOL, ANSYS, Opera or equivalent
Experience with programming environments (Matlab, Python, etc.) for scripting, tooling or data analysis
Desire to positively impact complex structural designs, rather than just execute on analysis
#LI-Onsite #LI-KL1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.
","descriptionPlain":"About Helion\n\nWe are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.\n\nSince Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.\n\nThis is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.\n\nWhat You Will Be Doing:\n\nYou will own hardware designs for Helion's fusion generator prototypes. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. You will report directly to our Engineering Manager at our Everett, WA office.\n\nYou Will:\n\n - Enhancing Helion’s analysis workflow for critical structures (electromagnets)\n\n - Running transient multiphysics finite-element models to generate margins for critical designs\n\n - Collaborating with a multidisciplinary engineering team to improve critical hardware designs\n\n - Learning from in-house experts to expand your skillset into electrical and thermal analysis\n\n - Building software tools to automate the analysis workflow and allow Helion engineers and scientists to run their own analysis\n\nRequired Skills:\n\n - You have a bachelor’s degree in electrical engineering, applied mathematics, physics or related field with a minimum of 3 years of engineering experience.\n\n - Strong background in analytical, computational and numerical simulation methods\n\n - A foundation of understanding of electromagnetic and thermal finite element modeling\n\n - Experience in taking on analysis problems from formulation through testing and model correlation.\n\n - Proficiency with multiphysics finite-element analysis tools such as COSMOL, ANSYS, Opera or equivalent\n\n - Experience with programming environments (Matlab, Python, etc.) for scripting, tooling or data analysis\n\n - Desire to positively impact complex structural designs, rather than just execute on analysis\n\n#LI-Onsite #LI-KL1\n\nBenefits\n\nOur total compensation package includes benefits, including but not limited to:\n\n• Medical, Dental, and Vision plans for employees and their families\n• 31 Days of PTO (21 vacation days and 10 sick days)\n• 10 Paid holidays, plus company-wide winter break\n• Up to 5% employer 401(k) match\n• Short term disability, long term disability, and life insurance\n• Paid parental leave and support (up to 16 weeks)\n• Annual wellness stipend\n\nHelion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know."}],"apiVersion":"1"}