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 compensation strategy, with a focus on evolving our equity programs and building scalable compensation structures across our technical, corporate, and manufacturing teams. You will partner directly with executive leadership to shape how we attract, reward, and retain employees as we grow, combining company-wide strategic ownership with hands-on program design and execution. This is an individual contributor role with full end-to-end ownership of compensation strategy across the company. This onsite role is based in our Seattle, WA office and reports to our Senior Director of Talent and People Operations.
You Will:
Build competitive salary, hourly pay, and incentive structures that reward performance and scale with the business
Own and evolve Helion's equity strategy, including plan design, grant guidelines, and evaluation of future award structures
Design and own compensation structures across diverse employee populations, including technical, business, and manufacturing teams
Own executive compensation strategy and programs
Advise executive leadership on compensation strategies and trade-offs, supporting Board-level discussions as needed
Lead compensation cycles, promotions, equity grants, and offer reviews with Talent and People Business Partners
Partner with Finance on compensation budgets, equity forecasting, and governance
Develop clear compensation and equity education that helps employees understand their compensation and equips leaders to communicate effectively
Required Skills:
10+ years of compensation experience, including building and scaling programs in startup or high-growth environments, with deep expertise in pre-IPO equity and stock-based compensation
Experience designing and managing executive compensation programs, as well as compensation structures and incentives for a large hourly workforce
Strong analytical and financial modeling skills, including market benchmarking, equity forecasting, and scenario analysis
Hands-on experience with best-in-class compensation systems and platforms, with the judgment to build internal tools and processes where off-the-shelf solutions fall short
Comfort leveraging data and AI-powered tools to scale analysis and improve decision speed
Proven ability to advise executives, challenge assumptions, and communicate complex compensation recommendations clearly
Demonstrated ability to turn ambiguous compensation needs into practical programs, balancing long-term strategy with hands-on execution
#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\n\n\nWhat You Will Be Doing:\n\nYou will lead Helion's compensation strategy, with a focus on evolving our equity programs and building scalable compensation structures across our technical, corporate, and manufacturing teams. You will partner directly with executive leadership to shape how we attract, reward, and retain employees as we grow, combining company-wide strategic ownership with hands-on program design and execution. This is an individual contributor role with full end-to-end ownership of compensation strategy across the company. This onsite role is based in our Seattle, WA office and reports to our Senior Director of Talent and People Operations.\n\nYou Will:\n\n - Build competitive salary, hourly pay, and incentive structures that reward performance and scale with the business\n\n - Own and evolve Helion's equity strategy, including plan design, grant guidelines, and evaluation of future award structures\n\n - Design and own compensation structures across diverse employee populations, including technical, business, and manufacturing teams\n\n - Own executive compensation strategy and programs\n\n - Advise executive leadership on compensation strategies and trade-offs, supporting Board-level discussions as needed\n\n - Lead compensation cycles, promotions, equity grants, and offer reviews with Talent and People Business Partners\n\n - Partner with Finance on compensation budgets, equity forecasting, and governance\n\n - Develop clear compensation and equity education that helps employees understand their compensation and equips leaders to communicate effectively\n\nRequired Skills:\n\n - 10+ years of compensation experience, including building and scaling programs in startup or high-growth environments, with deep expertise in pre-IPO equity and stock-based compensation\n\n - Experience designing and managing executive compensation programs, as well as compensation structures and incentives for a large hourly workforce\n\n - Strong analytical and financial modeling skills, including market benchmarking, equity forecasting, and scenario analysis\n\n - Hands-on experience with best-in-class compensation systems and platforms, with the judgment to build internal tools and processes where off-the-shelf solutions fall short\n\n - Comfort leveraging data and AI-powered tools to scale analysis and improve decision speed\n\n - Proven ability to advise executives, challenge assumptions, and communicate complex compensation recommendations clearly\n\n - Demonstrated ability to turn ambiguous compensation needs into practical programs, balancing long-term strategy with hands-on execution\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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 Materials Technologist","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
#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\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\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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.
Fusion happens in the power electronics. At Helion, plasma is compressed to fusion conditions by pulsed electromagnetic fields — so the machine's performance is, quite literally, defined by the circuits that store, switch, and recover energy. The power electronics are the product, and few engineering problems anywhere carry this much weight.
For a power electronics engineer, that makes this a rare kind of role. You'll take designs from concept through bring-up, commissioning, and operation on a working fusion machine — owning real outcomes, not a narrow slice of someone else's system. Small teams and fast build-test-learn cycles mean your decisions reach hardware in weeks, not years. And you'll work at a scale with almost no commercial analog: converters that move energy with near-total efficiency, and switching systems that deliver kiloamps at kilovolts in under a millisecond. If you've never worked at those extremes, that's expected — most engineers haven't. We hire strong power electronics engineers and grow them into the high-voltage and pulsed-power work. The fundamentals you already have are the foundation; the rest we build together.
Our power electronics work spans three focus areas. Depending on your background, interests, and level, you may go deep in one or work across several — many of our engineers own problems that touch all three.
Controls & protection for the power stage. Design the low-voltage electronics that command, monitor, and protect the pulsed-power circuits — EtherCAT-networked control boards that command charge and dump, synchronize triggering across many switches, capture high-speed diagnostics inside a high-voltage environment, and drive the fault protection that keeps a multi-megajoule system safe. This spans precision analog sensing, digital logic, FPGA-based monitoring, driver circuits, and dynamic snubbing.
High voltage & pulsed power. Design, build, and commission the pulsed-power systems that compress plasma to fusion conditions — capacitor banks, switching (thyristor/SCR and solid-state), triggering, and protection at kilovolt and kiloampere scale with sub-millisecond pulses. Characterize components under real pulsed conditions and turn test data into design guidance the team relies on.
Power electronics design. Design the power-conversion hardware that charges, controls, and recovers energy across the machine — high-efficiency converters, chargers, and energy-recovery circuits. Select devices, design magnetics and thermal paths, and optimize for efficiency, density, and manufacturability as we scale from prototype toward a production power plant.
A degree in Electrical Engineering or a related field, or equivalent hands-on experience.
Demonstrated experience designing and building power electronics or power-conversion hardware — from schematic through board bring-up, debug, and test. (The depth and independence we look for scale with level: from owning defined circuits and boards, to owning complex, loosely-defined systems, generating requirements for others, and setting technical direction.)
A solid grounding in power electronics fundamentals: switching topologies, semiconductor device selection (IGBTs, MOSFETs, thyristors/SCRs), gate drive, magnetics, thermal design, and loss analysis.
Proficiency with PCBA design (Altium, KiCad, or equivalent) and circuit simulation (SIMetrix, PLECS, LTspice, PSIM, or equivalent).
Strong hands-on lab skills: bench bring-up, characterization, and debugging with oscilloscopes, DMMs, and related instrumentation.
Comfort working across the hardware–firmware boundary; familiarity with real-time interfaces such as EtherCAT and with FPGA or embedded monitoring is an asset.
High-voltage or pulsed-power experience is welcome but not required. We actively support strong power electronics engineers in growing into our high-voltage and pulsed-power work.
Tools matter less than capability. If you've done the equivalent work in a different tool or stack, tell us — we care about what you can design and debug, not which software you learned it in.
#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\nWHY THIS ROLE MATTERS\n\nFusion happens in the power electronics. At Helion, plasma is compressed to fusion conditions by pulsed electromagnetic fields — so the machine's performance is, quite literally, defined by the circuits that store, switch, and recover energy. The power electronics are the product, and few engineering problems anywhere carry this much weight.\n\nFor a power electronics engineer, that makes this a rare kind of role. You'll take designs from concept through bring-up, commissioning, and operation on a working fusion machine — owning real outcomes, not a narrow slice of someone else's system. Small teams and fast build-test-learn cycles mean your decisions reach hardware in weeks, not years. And you'll work at a scale with almost no commercial analog: converters that move energy with near-total efficiency, and switching systems that deliver kiloamps at kilovolts in under a millisecond. If you've never worked at those extremes, that's expected — most engineers haven't. We hire strong power electronics engineers and grow them into the high-voltage and pulsed-power work. The fundamentals you already have are the foundation; the rest we build together.\n\n\n\n\nWHAT YOU WILL BE DOING\n\nOur power electronics work spans three focus areas. Depending on your background, interests, and level, you may go deep in one or work across several — many of our engineers own problems that touch all three.\n\nControls & protection for the power stage. Design the low-voltage electronics that command, monitor, and protect the pulsed-power circuits — EtherCAT-networked control boards that command charge and dump, synchronize triggering across many switches, capture high-speed diagnostics inside a high-voltage environment, and drive the fault protection that keeps a multi-megajoule system safe. This spans precision analog sensing, digital logic, FPGA-based monitoring, driver circuits, and dynamic snubbing.\n\nHigh voltage & pulsed power. Design, build, and commission the pulsed-power systems that compress plasma to fusion conditions — capacitor banks, switching (thyristor/SCR and solid-state), triggering, and protection at kilovolt and kiloampere scale with sub-millisecond pulses. Characterize components under real pulsed conditions and turn test data into design guidance the team relies on.\n\nPower electronics design. Design the power-conversion hardware that charges, controls, and recovers energy across the machine — high-efficiency converters, chargers, and energy-recovery circuits. Select devices, design magnetics and thermal paths, and optimize for efficiency, density, and manufacturability as we scale from prototype toward a production power plant.\n\n\n\n\nREQUIRED SKILLS\n\n - A degree in Electrical Engineering or a related field, or equivalent hands-on experience.\n\n - Demonstrated experience designing and building power electronics or power-conversion hardware — from schematic through board bring-up, debug, and test. (The depth and independence we look for scale with level: from owning defined circuits and boards, to owning complex, loosely-defined systems, generating requirements for others, and setting technical direction.)\n\n - A solid grounding in power electronics fundamentals: switching topologies, semiconductor device selection (IGBTs, MOSFETs, thyristors/SCRs), gate drive, magnetics, thermal design, and loss analysis.\n\n - Proficiency with PCBA design (Altium, KiCad, or equivalent) and circuit simulation (SIMetrix, PLECS, LTspice, PSIM, or equivalent).\n\n - Strong hands-on lab skills: bench bring-up, characterization, and debugging with oscilloscopes, DMMs, and related instrumentation.\n\n - Comfort working across the hardware–firmware boundary; familiarity with real-time interfaces such as EtherCAT and with FPGA or embedded monitoring is an asset.\n\nHigh-voltage or pulsed-power experience is welcome but not required. We actively support strong power electronics engineers in growing into our high-voltage and pulsed-power work.\n\nTools matter less than capability. If you've done the equivalent work in a different tool or stack, tell us — we care about what you can design and debug, not which software you learned it in.\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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.
Fusion happens in the power electronics. At Helion, plasma is compressed to fusion conditions by pulsed electromagnetic fields — so the machine's performance is, quite literally, defined by the circuits that store, switch, and recover energy. The power electronics are the product, and few engineering problems anywhere carry this much weight.
For a power electronics engineer, that makes this a rare kind of role. You'll take designs from concept through bring-up, commissioning, and operation on a working fusion machine — owning real outcomes, not a narrow slice of someone else's system. Small teams and fast build-test-learn cycles mean your decisions reach hardware in weeks, not years. And you'll work at a scale with almost no commercial analog: converters that move energy with near-total efficiency, and switching systems that deliver kiloamps at kilovolts in under a millisecond. If you've never worked at those extremes, that's expected — most engineers haven't. We hire strong power electronics engineers and grow them into the high-voltage and pulsed-power work. The fundamentals you already have are the foundation; the rest we build together.
Our power electronics work spans three focus areas. Depending on your background, interests, and level, you may go deep in one or work across several — many of our engineers own problems that touch all three.
Controls & protection for the power stage. Design the low-voltage electronics that command, monitor, and protect the pulsed-power circuits — EtherCAT-networked control boards that command charge and dump, synchronize triggering across many switches, capture high-speed diagnostics inside a high-voltage environment, and drive the fault protection that keeps a multi-megajoule system safe. This spans precision analog sensing, digital logic, FPGA-based monitoring, driver circuits, and dynamic snubbing.
High voltage & pulsed power. Design, build, and commission the pulsed-power systems that compress plasma to fusion conditions — capacitor banks, switching (thyristor/SCR and solid-state), triggering, and protection at kilovolt and kiloampere scale with sub-millisecond pulses. Characterize components under real pulsed conditions and turn test data into design guidance the team relies on.
Power electronics design. Design the power-conversion hardware that charges, controls, and recovers energy across the machine — high-efficiency converters, chargers, and energy-recovery circuits. Select devices, design magnetics and thermal paths, and optimize for efficiency, density, and manufacturability as we scale from prototype toward a production power plant.
A degree in Electrical Engineering or a related field, or equivalent hands-on experience.
Demonstrated experience designing and building power electronics or power-conversion hardware — from schematic through board bring-up, debug, and test. (The depth and independence we look for scale with level: from owning defined circuits and boards, to owning complex, loosely-defined systems, generating requirements for others, and setting technical direction.)
A solid grounding in power electronics fundamentals: switching topologies, semiconductor device selection (IGBTs, MOSFETs, thyristors/SCRs), gate drive, magnetics, thermal design, and loss analysis.
Proficiency with PCBA design (Altium, KiCad, or equivalent) and circuit simulation (SIMetrix, PLECS, LTspice, PSIM, or equivalent).
Strong hands-on lab skills: bench bring-up, characterization, and debugging with oscilloscopes, DMMs, and related instrumentation.
Comfort working across the hardware–firmware boundary; familiarity with real-time interfaces such as EtherCAT and with FPGA or embedded monitoring is an asset.
High-voltage or pulsed-power experience is welcome but not required. We actively support strong power electronics engineers in growing into our high-voltage and pulsed-power work.
Tools matter less than capability. If you've done the equivalent work in a different tool or stack, tell us — we care about what you can design and debug, not which software you learned it in.
#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\nWHY THIS ROLE MATTERS\n\nFusion happens in the power electronics. At Helion, plasma is compressed to fusion conditions by pulsed electromagnetic fields — so the machine's performance is, quite literally, defined by the circuits that store, switch, and recover energy. The power electronics are the product, and few engineering problems anywhere carry this much weight.\n\nFor a power electronics engineer, that makes this a rare kind of role. You'll take designs from concept through bring-up, commissioning, and operation on a working fusion machine — owning real outcomes, not a narrow slice of someone else's system. Small teams and fast build-test-learn cycles mean your decisions reach hardware in weeks, not years. And you'll work at a scale with almost no commercial analog: converters that move energy with near-total efficiency, and switching systems that deliver kiloamps at kilovolts in under a millisecond. If you've never worked at those extremes, that's expected — most engineers haven't. We hire strong power electronics engineers and grow them into the high-voltage and pulsed-power work. The fundamentals you already have are the foundation; the rest we build together.\n\n \n\n\nWHAT YOU WILL BE DOING\n\nOur power electronics work spans three focus areas. Depending on your background, interests, and level, you may go deep in one or work across several — many of our engineers own problems that touch all three.\n\nControls & protection for the power stage. Design the low-voltage electronics that command, monitor, and protect the pulsed-power circuits — EtherCAT-networked control boards that command charge and dump, synchronize triggering across many switches, capture high-speed diagnostics inside a high-voltage environment, and drive the fault protection that keeps a multi-megajoule system safe. This spans precision analog sensing, digital logic, FPGA-based monitoring, driver circuits, and dynamic snubbing.\n\nHigh voltage & pulsed power. Design, build, and commission the pulsed-power systems that compress plasma to fusion conditions — capacitor banks, switching (thyristor/SCR and solid-state), triggering, and protection at kilovolt and kiloampere scale with sub-millisecond pulses. Characterize components under real pulsed conditions and turn test data into design guidance the team relies on.\n\nPower electronics design. Design the power-conversion hardware that charges, controls, and recovers energy across the machine — high-efficiency converters, chargers, and energy-recovery circuits. Select devices, design magnetics and thermal paths, and optimize for efficiency, density, and manufacturability as we scale from prototype toward a production power plant.\n\n \n\n\nREQUIRED SKILLS\n\n - A degree in Electrical Engineering or a related field, or equivalent hands-on experience.\n\n - Demonstrated experience designing and building power electronics or power-conversion hardware — from schematic through board bring-up, debug, and test. (The depth and independence we look for scale with level: from owning defined circuits and boards, to owning complex, loosely-defined systems, generating requirements for others, and setting technical direction.)\n\n - A solid grounding in power electronics fundamentals: switching topologies, semiconductor device selection (IGBTs, MOSFETs, thyristors/SCRs), gate drive, magnetics, thermal design, and loss analysis.\n\n - Proficiency with PCBA design (Altium, KiCad, or equivalent) and circuit simulation (SIMetrix, PLECS, LTspice, PSIM, or equivalent).\n\n - Strong hands-on lab skills: bench bring-up, characterization, and debugging with oscilloscopes, DMMs, and related instrumentation.\n\n - Comfort working across the hardware–firmware boundary; familiarity with real-time interfaces such as EtherCAT and with FPGA or embedded monitoring is an asset.\n\nHigh-voltage or pulsed-power experience is welcome but not required. We actively support strong power electronics engineers in growing into our high-voltage and pulsed-power work.\n\nTools matter less than capability. If you've done the equivalent work in a different tool or stack, tell us — we care about what you can design and debug, not which software you learned it in.\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"2026-09-24T16:39:59.913+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
Support a 1st shift schedule: 6am to 2:30pm Monday through Friday
#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 - Support a 1st shift schedule: 6am to 2:30pm Monday through Friday\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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.
Helion's pace depends on electrical teams that ship hardware fast without ever compromising safety at multi-megajoule energies. As a manager, you build and lead the team designing the pulsed-power circuits at the core of the machine — capacitor banks, switching, and protection. Your job is to make that team excellent: to grow engineers, set technical direction, and turn ambitious designs into commissioned hardware.
Lead and grow a team of electrical engineers designing high-voltage and pulsed-power circuits.
Own technical direction, execution, and delivery for your team's hardware.
Coach, develop, and hire engineers; build a strong, fast, and safe engineering culture.
Partner across mechanical, controls, systems, and test teams to deliver integrated hardware.
Balance iteration speed with the rigor and safety that high-energy systems demand.
A degree in Electrical Engineering or a related field.
Significant electrical engineering experience, including power electronics or high-voltage circuit design.
People leadership experience (typically 2+ years managing engineers), and a track record of delivering complex electrical hardware.
Strong technical judgment and the ability to lead engineers who are experts in their domains.
Experience with pulsed power, capacitor banks, or high-voltage systems, and with fast-paced hardware development or early-stage team-building, is an asset.
#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\nWHY THIS ROLE MATTERS\n\nHelion's pace depends on electrical teams that ship hardware fast without ever compromising safety at multi-megajoule energies. As a manager, you build and lead the team designing the pulsed-power circuits at the core of the machine — capacitor banks, switching, and protection. Your job is to make that team excellent: to grow engineers, set technical direction, and turn ambitious designs into commissioned hardware.\n\n\n\n\nWHAT YOU WILL BE DOING\n\n - Lead and grow a team of electrical engineers designing high-voltage and pulsed-power circuits.\n\n - Own technical direction, execution, and delivery for your team's hardware.\n\n - Coach, develop, and hire engineers; build a strong, fast, and safe engineering culture.\n\n - Partner across mechanical, controls, systems, and test teams to deliver integrated hardware.\n\n - Balance iteration speed with the rigor and safety that high-energy systems demand.\n\n\n\n\nREQUIRED SKILLS\n\n - A degree in Electrical Engineering or a related field.\n\n - Significant electrical engineering experience, including power electronics or high-voltage circuit design.\n\n - People leadership experience (typically 2+ years managing engineers), and a track record of delivering complex electrical hardware.\n\n - Strong technical judgment and the ability to lead engineers who are experts in their domains.\n\n - Experience with pulsed power, capacitor banks, or high-voltage systems, and with fast-paced hardware development or early-stage team-building, is an asset.\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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.
Fusion happens in the power electronics, and at the frontier of what Helion is building, the hardest problems don't have textbook answers. As a Principal Power Electronics Engineer, you'll own those problems — the highest-risk, least-defined pulsed-power and power-conversion challenges the program faces — and set the technical direction that the rest of the electrical organization builds on. Your judgment will shape the architecture that determines whether Polaris and Orion can put fusion electricity on the grid, and your depth will raise the whole team's ceiling.
Own the most complex, ambiguous, high-impact power electronics problems across pulsed power, power conversion, and the control and protection of high-energy systems.
Set technical direction and standards for the electrical organization — architectures, design methods, and the \"golden standard\" for how demanding hardware gets built and validated.
Generate and negotiate requirements at the org and program level, and use schedule and technical risk to shape the broader roadmap toward Orion and mass production.
Be the go-to technical authority in one or more core areas (pulsed power, high-voltage design, power conversion, device application), and the person others bring their hardest problems to.
Multiply the team: mentor senior engineers, lead the hardest design reviews, and influence senior leadership on where the real technical risks are.
A degree in Electrical Engineering or a related field, or equivalent experience, with extensive (typically 12+ years) power electronics design experience.
Recognized depth in one or more core areas — pulsed power, high-voltage design, power conversion, magnetics, or high-power device application.
A track record owning complex, under-defined electrical systems end-to-end and setting technical direction that others follow.
Deep experience with high-voltage or pulsed-power systems, or with comparable high-energy power electronics (for example, utility-scale, traction, aerospace, or defense power systems).
The ability to influence senior leadership on technical and schedule risk, and a demonstrated record of mentoring and elevating experienced engineers.
#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\nWHY THIS ROLE MATTERS\n\nFusion happens in the power electronics, and at the frontier of what Helion is building, the hardest problems don't have textbook answers. As a Principal Power Electronics Engineer, you'll own those problems — the highest-risk, least-defined pulsed-power and power-conversion challenges the program faces — and set the technical direction that the rest of the electrical organization builds on. Your judgment will shape the architecture that determines whether Polaris and Orion can put fusion electricity on the grid, and your depth will raise the whole team's ceiling.\n\n\n\n\nWHAT YOU WILL BE DOING\n\n - Own the most complex, ambiguous, high-impact power electronics problems across pulsed power, power conversion, and the control and protection of high-energy systems.\n\n - Set technical direction and standards for the electrical organization — architectures, design methods, and the \"golden standard\" for how demanding hardware gets built and validated.\n\n - Generate and negotiate requirements at the org and program level, and use schedule and technical risk to shape the broader roadmap toward Orion and mass production.\n\n - Be the go-to technical authority in one or more core areas (pulsed power, high-voltage design, power conversion, device application), and the person others bring their hardest problems to.\n\n - Multiply the team: mentor senior engineers, lead the hardest design reviews, and influence senior leadership on where the real technical risks are.\n\n\n\n\nREQUIRED SKILLS\n\n - A degree in Electrical Engineering or a related field, or equivalent experience, with extensive (typically 12+ years) power electronics design experience.\n\n - Recognized depth in one or more core areas — pulsed power, high-voltage design, power conversion, magnetics, or high-power device application.\n\n - A track record owning complex, under-defined electrical systems end-to-end and setting technical direction that others follow.\n\n - Deep experience with high-voltage or pulsed-power systems, or with comparable high-energy power electronics (for example, utility-scale, traction, aerospace, or defense power systems).\n\n - The ability to influence senior leadership on technical and schedule risk, and a demonstrated record of mentoring and elevating experienced engineers.\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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.
Fusion happens in the power electronics, and at the frontier of what Helion is building, the hardest problems don't have textbook answers. As a Principal Power Electronics Engineer, you'll own those problems — the highest-risk, least-defined pulsed-power and power-conversion challenges the program faces — and set the technical direction that the rest of the electrical organization builds on. Your judgment will shape the architecture that determines whether Polaris and Orion can put fusion electricity on the grid, and your depth will raise the whole team's ceiling.
Own the most complex, ambiguous, high-impact power electronics problems across pulsed power, power conversion, and the control and protection of high-energy systems.
Set technical direction and standards for the electrical organization — architectures, design methods, and the \"golden standard\" for how demanding hardware gets built and validated.
Generate and negotiate requirements at the org and program level, and use schedule and technical risk to shape the broader roadmap toward Orion and mass production.
Be the go-to technical authority in one or more core areas (pulsed power, high-voltage design, power conversion, device application), and the person others bring their hardest problems to.
Multiply the team: mentor senior engineers, lead the hardest design reviews, and influence senior leadership on where the real technical risks are.
A degree in Electrical Engineering or a related field, or equivalent experience, with extensive (typically 12+ years) power electronics design experience.
Recognized depth in one or more core areas — pulsed power, high-voltage design, power conversion, magnetics, or high-power device application.
A track record owning complex, under-defined electrical systems end-to-end and setting technical direction that others follow.
Deep experience with high-voltage or pulsed-power systems, or with comparable high-energy power electronics (for example, utility-scale, traction, aerospace, or defense power systems).
The ability to influence senior leadership on technical and schedule risk, and a demonstrated record of mentoring and elevating experienced engineers.
#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\nWHY THIS ROLE MATTERS\n\nFusion happens in the power electronics, and at the frontier of what Helion is building, the hardest problems don't have textbook answers. As a Principal Power Electronics Engineer, you'll own those problems — the highest-risk, least-defined pulsed-power and power-conversion challenges the program faces — and set the technical direction that the rest of the electrical organization builds on. Your judgment will shape the architecture that determines whether Polaris and Orion can put fusion electricity on the grid, and your depth will raise the whole team's ceiling.\n\n\n\n\nWHAT YOU WILL BE DOING\n\n - Own the most complex, ambiguous, high-impact power electronics problems across pulsed power, power conversion, and the control and protection of high-energy systems.\n\n - Set technical direction and standards for the electrical organization — architectures, design methods, and the \"golden standard\" for how demanding hardware gets built and validated.\n\n - Generate and negotiate requirements at the org and program level, and use schedule and technical risk to shape the broader roadmap toward Orion and mass production.\n\n - Be the go-to technical authority in one or more core areas (pulsed power, high-voltage design, power conversion, device application), and the person others bring their hardest problems to.\n\n - Multiply the team: mentor senior engineers, lead the hardest design reviews, and influence senior leadership on where the real technical risks are.\n\n\n\n\nREQUIRED SKILLS\n\n - A degree in Electrical Engineering or a related field, or equivalent experience, with extensive (typically 12+ years) power electronics design experience.\n\n - Recognized depth in one or more core areas — pulsed power, high-voltage design, power conversion, magnetics, or high-power device application.\n\n - A track record owning complex, under-defined electrical systems end-to-end and setting technical direction that others follow.\n\n - Deep experience with high-voltage or pulsed-power systems, or with comparable high-energy power electronics (for example, utility-scale, traction, aerospace, or defense power systems).\n\n - The ability to influence senior leadership on technical and schedule risk, and a demonstrated record of mentoring and elevating experienced engineers.\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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 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 Sr Systems Engineer, you will own the system architecture and top-level requirements that hold Helion's fusion power plant together as a coherent whole — spanning the fusion machine, balance of plant, and the systems that connect them. You will work across electrical, mechanical, controls, plant, science, and business teams to decompose plant-level mission objectives into traceable subsystem requirements, drive the trade studies that shape major plant architecture decisions, and define the interfaces between subsystems and suppliers through rigorous ICDs. You will lead technical reviews, own verification planning against top-level plant requirements, and maintain clear traceability from plant-level objectives down through the requirements hierarchy to implemented hardware. You will drive technical consensus across functional teams and represent the plant's technical position in leadership and program-level reviews. This role is architecture- and requirements-focused, serving as the technical integration point across subsystem, science, and business teams at the plant level.
You Will
Own and maintain Helion's top-level plant requirements, ensuring clear, traceable decomposition from plant-level mission objectives down to subsystem and component requirements.
Lead trade studies that inform major plant architecture decisions, presenting clear technical rationale to engineering leadership.
Develop and own Interface Control Documents (ICDs) that define the electrical, mechanical, controls, and data interfaces between plant subsystems and with suppliers.
Lead and facilitate design reviews (PDR/CDR-style and informal) at the plant level, ensuring requirements, interfaces, and risks are surfaced and dispositioned early.
Identify, assess, and track plant-level integration risks, and drive mitigation strategies and resolution across functional teams.
Drive configuration management and change control for plant-level requirements and baselines, evaluating the cross-system impact of proposed design changes and recommending disposition.
Partner with electrical, mechanical, controls, test, science, and business teams to ensure subsystem designs remain aligned with plant-level intent as designs mature.
Drive technical consensus across functional teams on plant-level decisions, and represent the plant's technical position in program and leadership reviews.
Scale Helion's systems engineering processes — requirements management, ICD control, and design review cadence — to meet the needs of an organization moving from prototype to production power plants.
Required Skills
Bachelor's or Master's degree in Systems Engineering, Electrical Engineering, Mechanical Engineering, or a related field.
8+ years of experience in systems engineering, with demonstrated ownership of requirements, architecture, or interface definition on complex plant or hardware systems.
Proven experience decomposing high-level plant or mission requirements into traceable, verifiable subsystem requirements.
Proven experience authoring and owning ICDs across multiple engineering disciplines.
Experience developing and executing verification and validation plans against system-level requirements.
Strong technical writing and communication skills, with the ability to influence design decisions across disciplines without direct authority.
Demonstrated ability to drive technical consensus and decisions across cross-functional engineering teams.
Comfort working across electrical, mechanical, controls, science, business, and software domains without being deeply expert in all of them.
Demonstrated ability to operate in fast-paced development environments requiring both engineering rigor and speed.
Desired Skills
Experience in aerospace, nuclear, energy systems, or other complex, safety-critical, first-of-kind hardware or plant programs.
Experience with requirements management and PLM tooling (Jama, DOORS, Teamcenter, or similar).
Experience with risk identification, tracking, and mitigation on complex engineering programs.
Experience applying system safety and reliability methods, including FMEA, FMECA, or fault tree analysis.
Track record of mentoring engineers toward stronger systems engineering practice.
#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 Sr Systems Engineer, you will own the system architecture and top-level requirements that hold Helion's fusion power plant together as a coherent whole — spanning the fusion machine, balance of plant, and the systems that connect them. You will work across electrical, mechanical, controls, plant, science, and business teams to decompose plant-level mission objectives into traceable subsystem requirements, drive the trade studies that shape major plant architecture decisions, and define the interfaces between subsystems and suppliers through rigorous ICDs. You will lead technical reviews, own verification planning against top-level plant requirements, and maintain clear traceability from plant-level objectives down through the requirements hierarchy to implemented hardware. You will drive technical consensus across functional teams and represent the plant's technical position in leadership and program-level reviews. This role is architecture- and requirements-focused, serving as the technical integration point across subsystem, science, and business teams at the plant level.\n\nYou Will\n\n - Own and maintain Helion's top-level plant requirements, ensuring clear, traceable decomposition from plant-level mission objectives down to subsystem and component requirements.\n\n - Lead trade studies that inform major plant architecture decisions, presenting clear technical rationale to engineering leadership.\n\n - Develop and own Interface Control Documents (ICDs) that define the electrical, mechanical, controls, and data interfaces between plant subsystems and with suppliers.\n\n - Lead and facilitate design reviews (PDR/CDR-style and informal) at the plant level, ensuring requirements, interfaces, and risks are surfaced and dispositioned early.\n\n - Identify, assess, and track plant-level integration risks, and drive mitigation strategies and resolution across functional teams.\n\n - Drive configuration management and change control for plant-level requirements and baselines, evaluating the cross-system impact of proposed design changes and recommending disposition.\n\n - Partner with electrical, mechanical, controls, test, science, and business teams to ensure subsystem designs remain aligned with plant-level intent as designs mature.\n\n - Drive technical consensus across functional teams on plant-level decisions, and represent the plant's technical position in program and leadership reviews.\n\n - Scale Helion's systems engineering processes — requirements management, ICD control, and design review cadence — to meet the needs of an organization moving from prototype to production power plants.\n\nRequired Skills\n\n - Bachelor's or Master's degree in Systems Engineering, Electrical Engineering, Mechanical Engineering, or a related field.\n\n - 8+ years of experience in systems engineering, with demonstrated ownership of requirements, architecture, or interface definition on complex plant or hardware systems.\n\n - Proven experience decomposing high-level plant or mission requirements into traceable, verifiable subsystem requirements.\n\n - Proven experience authoring and owning ICDs across multiple engineering disciplines.\n\n - Experience developing and executing verification and validation plans against system-level requirements.\n\n - Strong technical writing and communication skills, with the ability to influence design decisions across disciplines without direct authority.\n\n - Demonstrated ability to drive technical consensus and decisions across cross-functional engineering teams.\n\n - Comfort working across electrical, mechanical, controls, science, business, and software domains without being deeply expert in all of them.\n\n - Demonstrated ability to operate in fast-paced development environments requiring both engineering rigor and speed.\n \n \n\nDesired Skills\n\n - Experience in aerospace, nuclear, energy systems, or other complex, safety-critical, first-of-kind hardware or plant programs.\n\n - Experience with requirements management and PLM tooling (Jama, DOORS, Teamcenter, or similar).\n\n - Experience with risk identification, tracking, and mitigation on complex engineering programs.\n\n - Experience applying system safety and reliability methods, including FMEA, FMECA, or fault tree analysis.\n\n - Track record of mentoring engineers toward stronger systems engineering practice.\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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.
Taking fusion from a working prototype to a manufacturable power plant is as much an organizational challenge as a technical one. As a Senior Manager, you scale both the electrical systems and the teams that build them — leading across high-energy power systems and owning the roadmap from Polaris toward Orion and, ultimately, mass production. You'll operate where technical strategy, execution, and team-building meet.
Lead and scale electrical engineering across high-energy power systems — capacitor banks, power conversion, and grid tie-in.
Own the technical roadmap that carries these systems from prototype toward manufacturable, mass-produced hardware.
Develop managers and senior individual contributors; build organizational depth ahead of Helion's growth.
Drive execution across multiple teams and disciplines, and remove the obstacles that slow them down.
Partner with company leadership on strategy, hiring, and budgets, and keep safety and rigor central as the organization scales.
A degree in Electrical Engineering or a related field.
Extensive electrical engineering experience, including high-power or high-voltage systems.
Leadership experience (typically 3+ years), including leading engineers and, ideally, other leaders.
A track record scaling teams and delivering complex electrical systems, with both strategic and hands-on technical judgment.
Experience with grid tie-in, design-for-manufacturing and production ramp, or scaling an engineering organization through rapid growth is an asset.
#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\nWHY THIS ROLE MATTERS\n\nTaking fusion from a working prototype to a manufacturable power plant is as much an organizational challenge as a technical one. As a Senior Manager, you scale both the electrical systems and the teams that build them — leading across high-energy power systems and owning the roadmap from Polaris toward Orion and, ultimately, mass production. You'll operate where technical strategy, execution, and team-building meet.\n\n\n\n\nWHAT YOU WILL BE DOING\n\n - Lead and scale electrical engineering across high-energy power systems — capacitor banks, power conversion, and grid tie-in.\n\n - Own the technical roadmap that carries these systems from prototype toward manufacturable, mass-produced hardware.\n\n - Develop managers and senior individual contributors; build organizational depth ahead of Helion's growth.\n\n - Drive execution across multiple teams and disciplines, and remove the obstacles that slow them down.\n\n - Partner with company leadership on strategy, hiring, and budgets, and keep safety and rigor central as the organization scales.\n\n\n\n\nREQUIRED SKILLS\n\n - A degree in Electrical Engineering or a related field.\n\n - Extensive electrical engineering experience, including high-power or high-voltage systems.\n\n - Leadership experience (typically 3+ years), including leading engineers and, ideally, other leaders.\n\n - A track record scaling teams and delivering complex electrical systems, with both strategic and hands-on technical judgment.\n\n - Experience with grid tie-in, design-for-manufacturing and production ramp, or scaling an engineering organization through rapid growth is an asset.\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"2026-07-24T15:33:19.033+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. This role is onsite at our headquarters in Everett, WA.
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\n\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. This role is onsite at our headquarters in Everett, WA.\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"Electrical Engineering","team":"Electrical Engineering","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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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 within Helion’s R&D department and lead the team in delivering reliable systems that enable rapid experimentation while creating a scalable foundation for increasingly complex machines. This team delivers and maintains control and data acquisition systems for high-voltage electrical test bays, plasma-technology test bays, production and manufacturing end-of-line testing, and large field-reversed configuration (FRC) plasma machines.
Your near-term focus will be strengthening and standardizing control system architectures, hardware, software, and development practices across these applications. Over time, the team’s scope may expand to include contributions to the control system for Orion, Helion’s first fusion power plant. You will report to the R&D Manager and work onsite at our Everett, WA office.
You Will:
Effectively manage a team of controls engineers in the timely and successful delivery of control and data acquisition systems across R&D
Guide the development and maintenance of code, testing, deployment, configuration-management, and documentation practices that support future growth
Balance rapid delivery for near-term experimental needs with the development of reliable, maintainable, and scalable control systems
Build effective partnerships with scientists, engineers, machine operators, production teams, and other internal stakeholders
Establish clear priorities, ownership, expectations, and technical direction for the team
Proactively identify and mitigate technical, organizational, and staffing constraints
Coach and develop engineers through clear expectations, actionable feedback, and meaningful growth opportunities
Maintain a high performance bar, address performance challenges, and build a culture of accountability, urgency, and technical rigor
Recruit and grow the team as needed to accomplish its mission
Advocate effectively for the team with partner organizations and company leadership
Required Skills:
Minimum 2+ years managing controls engineers within a scaling environment
Demonstrated ability to lead, coach, and develop engineers, including setting clear expectations, providing actionable feedback, and building accountability
Ability to set technical direction, prioritize competing needs, and lead a team through ambiguous or rapidly changing requirements
Experience developing control and data acquisition systems for large-scale, complex hardware
Technical proficiency with LabVIEW and NI hardware in control system applications, including PXI, cRIO, real-time systems, and FPGA
Experience integrating PLCs with LabVIEW- and NI-based control systems
Experience integrating text-based code, such as C or MATLAB, with LabVIEW- and NI-based control systems
Strong cross-functional communication and collaboration 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\nYou will manage the Control Systems team within Helion’s R&D department and lead the team in delivering reliable systems that enable rapid experimentation while creating a scalable foundation for increasingly complex machines. This team delivers and maintains control and data acquisition systems for high-voltage electrical test bays, plasma-technology test bays, production and manufacturing end-of-line testing, and large field-reversed configuration (FRC) plasma machines.\n\nYour near-term focus will be strengthening and standardizing control system architectures, hardware, software, and development practices across these applications. Over time, the team’s scope may expand to include contributions to the control system for Orion, Helion’s first fusion power plant. You will report to the R&D Manager and work onsite at our Everett, WA office.\n\nYou Will:\n\n - Effectively manage a team of controls engineers in the timely and successful delivery of control and data acquisition systems across R&D\n\n - Guide the development and maintenance of code, testing, deployment, configuration-management, and documentation practices that support future growth\n\n - Balance rapid delivery for near-term experimental needs with the development of reliable, maintainable, and scalable control systems\n\n - Build effective partnerships with scientists, engineers, machine operators, production teams, and other internal stakeholders\n\n - Establish clear priorities, ownership, expectations, and technical direction for the team\n\n - Proactively identify and mitigate technical, organizational, and staffing constraints\n\n - Coach and develop engineers through clear expectations, actionable feedback, and meaningful growth opportunities\n\n - Maintain a high performance bar, address performance challenges, and build a culture of accountability, urgency, and technical rigor\n\n - Recruit and grow the team as needed to accomplish its mission\n\n - Advocate effectively for the team with partner organizations and company leadership\n\nRequired Skills:\n\n - Minimum 2+ years managing controls engineers within a scaling environment\n\n - Demonstrated ability to lead, coach, and develop engineers, including setting clear expectations, providing actionable feedback, and building accountability\n\n - Ability to set technical direction, prioritize competing needs, and lead a team through ambiguous or rapidly changing requirements\n\n - Experience developing control and data acquisition systems for large-scale, complex hardware\n\n - Technical proficiency with LabVIEW and NI hardware in control system applications, including PXI, cRIO, real-time systems, and FPGA\n\n - Experience integrating PLCs with LabVIEW- and NI-based control systems\n\n - Experience integrating text-based code, such as C or MATLAB, with LabVIEW- and NI-based control systems\n\n - Strong cross-functional communication and collaboration skills\n\n \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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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 Applied Plasma Data Scientist","department":"Science","team":"Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-08-18T17:08:58.315+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 Principal Applied 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
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\nHelion is hiring a Principal Applied 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\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"2026-10-01T16:10:32.215+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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"2026-08-17T18:44:45.035+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 be working with mechanical engineers, electrical engineers, manufacturing engineers, and production technicians, to implement and troubleshoot high-voltage and low-voltage hardware architectures for pulsed power capacitor banks that are designed for production at scale. 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. This role is onsite at our headquarters in Everett, WA.
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 COMSOL Multiphysics, and hold design reviews to gather feedback and iterate to a fully functioning system
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 (mechanical, electrical, fluids, thermal)
Experience designing, testing, and launching production hardware at scale
Moderate understanding of engineering physics fundamentals (mechanics of materials, circuits), and the ability to apply those principles to the design of high-voltage and pulsed power hardware
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, COMSOL)
#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\nYou will own hardware designs for Helion's fusion generator prototypes. You will be working with mechanical engineers, electrical engineers, manufacturing engineers, and production technicians, to implement and troubleshoot high-voltage and low-voltage hardware architectures for pulsed power capacitor banks that are designed for production at scale. 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. This role is onsite at our headquarters in Everett, WA.\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 COMSOL Multiphysics, and hold design reviews to gather feedback and iterate to a fully functioning system\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 (mechanical, electrical, fluids, thermal)\n\n - Experience designing, testing, and launching production hardware at scale\n\n - Moderate understanding of engineering physics fundamentals (mechanics of materials, circuits), and the ability to apply those principles to the design of high-voltage and pulsed power hardware\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, COMSOL)\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"2026-09-22T18:31:15.098+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.
Fusion happens in the power electronics. At Helion, plasma is compressed to fusion conditions by pulsed electromagnetic fields, so the machine's performance is, quite literally, defined by the circuits that store, switch, and recover energy. The power electronics are the product, and few engineering problems anywhere carry this much weight.
For a power electronics engineer, that makes this a rare kind of role. You'll take designs from concept through bring-up, commissioning, and operation on a working fusion machine, owning real outcomes, not a narrow slice of someone else's system. Small teams and fast build-test-learn cycles mean your decisions reach hardware in weeks, not years. And you'll work at a scale with almost no commercial analog: converters that move energy with near-total efficiency, and switching systems that deliver kiloamps at kilovolts in under a millisecond. If you've never worked at those extremes, that's expected; most engineers haven't. We hire strong power electronics engineers and grow them into the high-voltage and pulsed-power work. The fundamentals you already have are the foundation; the rest we build together.
Our power electronics work spans three focus areas. Depending on your background, interests, and level, you may go deep in one or work across several. Many of our engineers own problems that touch all three.
Controls & protection for the power stage. Design the low-voltage electronics that command, monitor, and protect the pulsed-power circuits, including EtherCAT-networked control boards that command charge and dump, synchronize triggering across many switches, capture high-speed diagnostics inside a high-voltage environment, and drive the fault protection that keeps a multi-megajoule system safe. This spans precision analog sensing, digital logic, FPGA-based monitoring, driver circuits, and dynamic snubbing.
High voltage & pulsed power. Design, build, and commission the pulsed-power systems that compress plasma to fusion conditions, including capacitor banks, switching (thyristor/SCR and solid-state), triggering, and protection at kilovolt and kiloampere scale with sub-millisecond pulses. Characterize components under real pulsed conditions and turn test data into design guidance the team relies on.
Power electronics design. Design the power-conversion hardware that charges, controls, and recovers energy across the machine, including high-efficiency converters, chargers, and energy-recovery circuits. Select devices, design magnetics and thermal paths, and optimize for efficiency, density, and manufacturability as we scale from prototype toward a production power plant.
A degree in Electrical Engineering or a related field, or equivalent hands-on experience.
Demonstrated experience designing and building power electronics or power-conversion hardware, from schematic through board bring-up, debug, and test. (The depth and independence we look for scale with level: from owning defined circuits and boards, to owning complex, loosely-defined systems, generating requirements for others, and setting technical direction.)
A solid grounding in power electronics fundamentals: switching topologies, semiconductor device selection (IGBTs, MOSFETs, thyristors/SCRs), gate drive, magnetics, thermal design, and loss analysis.
Proficiency with PCBA design (Altium, KiCad, or equivalent) and circuit simulation (SIMetrix, PLECS, LTspice, PSIM, or equivalent).
Strong hands-on lab skills: bench bring-up, characterization, and debugging with oscilloscopes, DMMs, and related instrumentation.
Comfort working across the hardware–firmware boundary; familiarity with real-time interfaces such as EtherCAT and with FPGA or embedded monitoring is an asset.
High-voltage or pulsed-power experience is welcome but not required. We actively support strong power electronics engineers in growing into our high-voltage and pulsed-power work.
Tools matter less than capability. If you've done the equivalent work in a different tool or stack, tell us. We care about what you can design and debug, not which software you learned it in.
#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\nWHY THIS ROLE MATTERS\n\nFusion happens in the power electronics. At Helion, plasma is compressed to fusion conditions by pulsed electromagnetic fields, so the machine's performance is, quite literally, defined by the circuits that store, switch, and recover energy. The power electronics are the product, and few engineering problems anywhere carry this much weight.\n\nFor a power electronics engineer, that makes this a rare kind of role. You'll take designs from concept through bring-up, commissioning, and operation on a working fusion machine, owning real outcomes, not a narrow slice of someone else's system. Small teams and fast build-test-learn cycles mean your decisions reach hardware in weeks, not years. And you'll work at a scale with almost no commercial analog: converters that move energy with near-total efficiency, and switching systems that deliver kiloamps at kilovolts in under a millisecond. If you've never worked at those extremes, that's expected; most engineers haven't. We hire strong power electronics engineers and grow them into the high-voltage and pulsed-power work. The fundamentals you already have are the foundation; the rest we build together.\n\n\n\n\nWHAT YOU WILL BE DOING\n\nOur power electronics work spans three focus areas. Depending on your background, interests, and level, you may go deep in one or work across several. Many of our engineers own problems that touch all three.\n\n - Controls & protection for the power stage. Design the low-voltage electronics that command, monitor, and protect the pulsed-power circuits, including EtherCAT-networked control boards that command charge and dump, synchronize triggering across many switches, capture high-speed diagnostics inside a high-voltage environment, and drive the fault protection that keeps a multi-megajoule system safe. This spans precision analog sensing, digital logic, FPGA-based monitoring, driver circuits, and dynamic snubbing.\n\n - High voltage & pulsed power. Design, build, and commission the pulsed-power systems that compress plasma to fusion conditions, including capacitor banks, switching (thyristor/SCR and solid-state), triggering, and protection at kilovolt and kiloampere scale with sub-millisecond pulses. Characterize components under real pulsed conditions and turn test data into design guidance the team relies on.\n\n - Power electronics design. Design the power-conversion hardware that charges, controls, and recovers energy across the machine, including high-efficiency converters, chargers, and energy-recovery circuits. Select devices, design magnetics and thermal paths, and optimize for efficiency, density, and manufacturability as we scale from prototype toward a production power plant.\n\n\nREQUIRED SKILLS\n\n - A degree in Electrical Engineering or a related field, or equivalent hands-on experience.\n\n - Demonstrated experience designing and building power electronics or power-conversion hardware, from schematic through board bring-up, debug, and test. (The depth and independence we look for scale with level: from owning defined circuits and boards, to owning complex, loosely-defined systems, generating requirements for others, and setting technical direction.)\n\n - A solid grounding in power electronics fundamentals: switching topologies, semiconductor device selection (IGBTs, MOSFETs, thyristors/SCRs), gate drive, magnetics, thermal design, and loss analysis.\n\n - Proficiency with PCBA design (Altium, KiCad, or equivalent) and circuit simulation (SIMetrix, PLECS, LTspice, PSIM, or equivalent).\n\n - Strong hands-on lab skills: bench bring-up, characterization, and debugging with oscilloscopes, DMMs, and related instrumentation.\n\n - Comfort working across the hardware–firmware boundary; familiarity with real-time interfaces such as EtherCAT and with FPGA or embedded monitoring is an asset.\n\nHigh-voltage or pulsed-power experience is welcome but not required. We actively support strong power electronics engineers in growing into our high-voltage and pulsed-power work.\n\nTools matter less than capability. If you've done the equivalent work in a different tool or stack, tell us. We care about what you can design and debug, not which software you learned it in.\n\n\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"d46a7f5f-4533-4a82-b9ce-907e1f27b77f","title":"Senior AP Analyst","department":"Finance","team":"Finance","employmentType":"FullTime","location":"Seattle, WA","secondaryLocations":[],"publishedAt":"2026-09-21T20:40:19.217+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"Washington","addressCountry":"United States","addressLocality":"Seattle"}},"jobUrl":"https://jobs.ashbyhq.com/helion/d46a7f5f-4533-4a82-b9ce-907e1f27b77f","applyUrl":"https://jobs.ashbyhq.com/helion/d46a7f5f-4533-4a82-b9ce-907e1f27b77f/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 own Helion’s end-to-end accounts payable process, ensuring accurate, timely payments and strong financial controls as we scale. As a Senior Accounts Payable Analyst, you will partner across Finance, Supply Chain, and the business to resolve issues, support month-end close, and improve accounts payable processes and systems. This is an onsite role at our Seattle, WA office, reporting to the Accounts Payable Manager.
You Will:
Process invoices from intake and approval through posting and record retention, ensuring accurate coding, complete documentation, and compliance with company policies and internal controls
Perform two- and three-way matching, resolving price, quantity, tax, and receipt discrepancies before posting
Partner with General Ledger, Supply Chain, Receiving, Procurement, and business requestors to resolve invoice exceptions, payment holds, and account discrepancies
Execute timely ACH, wire, and card payments in accordance with regulatory requirements and approval, segregation-of-duties, bank-change verification, and fraud-prevention controls
Maintain and periodically review vendor records, including onboarding documentation, tax forms, and banking details; reconcile vendor statements and respond promptly to vendor and internal inquiries
Support month-end close by reviewing open invoices and unmatched receipts, reconciling accounts payable activity, resolving aging items, and assisting with accruals
Contribute to process improvements, system testing, audits, and other finance projects to support a growing business
Required Skills:
5+ years of end-to-end accounts payable experience, including work in a high-growth, technology-driven environment
Proficiency with Tipalti, Ramp, or comparable accounts payable platforms
Experience with two- and three-way invoice matching and the ability to accurately process at least 200 invoices per week
Strong attention to detail, organization, and time management, with the ability to learn quickly, prioritize competing needs, and meet deadlines
Strong problem-solving and customer service skills, with the ability to communicate clearly with vendors and internal stakeholders in writing, verbally, and through presentations
Availability to work extended hours or weekends, as needed, to meet critical accounts payable deadlines
#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 Do\n\nYou will own Helion’s end-to-end accounts payable process, ensuring accurate, timely payments and strong financial controls as we scale. As a Senior Accounts Payable Analyst, you will partner across Finance, Supply Chain, and the business to resolve issues, support month-end close, and improve accounts payable processes and systems. This is an onsite role at our Seattle, WA office, reporting to the Accounts Payable Manager.\n\nYou Will:\n\n - Process invoices from intake and approval through posting and record retention, ensuring accurate coding, complete documentation, and compliance with company policies and internal controls\n\n - Perform two- and three-way matching, resolving price, quantity, tax, and receipt discrepancies before posting\n\n - Partner with General Ledger, Supply Chain, Receiving, Procurement, and business requestors to resolve invoice exceptions, payment holds, and account discrepancies\n\n - Execute timely ACH, wire, and card payments in accordance with regulatory requirements and approval, segregation-of-duties, bank-change verification, and fraud-prevention controls\n\n - Maintain and periodically review vendor records, including onboarding documentation, tax forms, and banking details; reconcile vendor statements and respond promptly to vendor and internal inquiries\n\n - Support month-end close by reviewing open invoices and unmatched receipts, reconciling accounts payable activity, resolving aging items, and assisting with accruals\n\n - Contribute to process improvements, system testing, audits, and other finance projects to support a growing business\n\nRequired Skills:\n\n - 5+ years of end-to-end accounts payable experience, including work in a high-growth, technology-driven environment\n\n - Proficiency with Tipalti, Ramp, or comparable accounts payable platforms\n\n - Experience with two- and three-way invoice matching and the ability to accurately process at least 200 invoices per week\n\n - Strong attention to detail, organization, and time management, with the ability to learn quickly, prioritize competing needs, and meet deadlines\n\n - Strong problem-solving and customer service skills, with the ability to communicate clearly with vendors and internal stakeholders in writing, verbally, and through presentations\n\n - Availability to work extended hours or weekends, as needed, to meet critical accounts payable deadlines\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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. You will report to the Lead Materials Scientist, and this is an onsite role located at our Everett, WA office.
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
Manage the roadmap for sensing technologies crucial for structural health monitoring in fusion generator systems
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-IB1 #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. You will report to the Lead Materials Scientist, and this is an onsite role located at our Everett, WA office.\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 - Manage the roadmap for sensing technologies crucial for structural health monitoring in fusion generator systems\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-IB1 #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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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 Plasma Physics","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:
The Director of Plasma Physics will lead a multidisciplinary team of experimental and computational scientists, engineers, and technicians. The teams reporting into the Director of Plasma Physics are Experimental Physics, Diagnostics, MHD Simulations, Data Science, PIC/Kinetic Simulations, and Concept Prototyping. This team will drive simulations and experimental campaigns aimed at understanding plasma behavior and enhancing fusion performance in future systems. You will report directly to our Senior Director of Science in the organization housing Plasma Physics, Nuclear Science, Materials Science, Fuel Cycle, and Health Physics.
You Will:
Build, grow, and lead a multidisciplinary team of experimental and computational scientists, engineers, and technicians focused on advancing plasma performance
Develop organizational operating rhythms and systems
Maintain a high talent bar via hiring, performance management, and developing managers
Define and execute an integrated scientific roadmap that connects computational modeling, experimental campaigns, and the development of future fusion systems
Partner with Helion’s leadership to establish organizational goals, prioritize resources, balance technical risks, and take ownership of delivering against the team’s commitments
Oversee experimental and computational programs spanning plasma diagnostics, MHD and PIC simulations, plasma pre-ionization, machine design, data analysis, and model validation
Synthesize simulation and experimental results into clear technical conclusions that guide research priorities, system design, and future device development
Drive plasma physics deliverables to completion in collaboration with Mechanical Engineering, Electrical Engineering, R&D, and Production teams
Required Skills:
Advanced degree in physics, engineering, or a related physical science discipline, with 10+ years of scientific research experience and 5+ years managing scientists or engineers in a research, development, or technology environment
Demonstrated experience building and leading multidisciplinary teams spanning experimental science, computational modeling, engineering, and technical operations
Experience using computational models and experimental data together to interpret plasma behavior, validate scientific hypotheses, and inform technical decisions
Experience leading complex, cross-functional applied physics programs involving experimental
#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\n\n\nWhat You Will Be Doing:\n\nThe Director of Plasma Physics will lead a multidisciplinary team of experimental and computational scientists, engineers, and technicians. The teams reporting into the Director of Plasma Physics are Experimental Physics, Diagnostics, MHD Simulations, Data Science, PIC/Kinetic Simulations, and Concept Prototyping. This team will drive simulations and experimental campaigns aimed at understanding plasma behavior and enhancing fusion performance in future systems. You will report directly to our Senior Director of Science in the organization housing Plasma Physics, Nuclear Science, Materials Science, Fuel Cycle, and Health Physics.\n\n\n\nYou Will:\n\n - Build, grow, and lead a multidisciplinary team of experimental and computational scientists, engineers, and technicians focused on advancing plasma performance\n\n - Develop organizational operating rhythms and systems\n\n - Maintain a high talent bar via hiring, performance management, and developing managers\n\n - Define and execute an integrated scientific roadmap that connects computational modeling, experimental campaigns, and the development of future fusion systems\n\n - Partner with Helion’s leadership to establish organizational goals, prioritize resources, balance technical risks, and take ownership of delivering against the team’s commitments\n\n - Oversee experimental and computational programs spanning plasma diagnostics, MHD and PIC simulations, plasma pre-ionization, machine design, data analysis, and model validation\n\n - Synthesize simulation and experimental results into clear technical conclusions that guide research priorities, system design, and future device development\n\n - Drive plasma physics deliverables to completion in collaboration with Mechanical Engineering, Electrical Engineering, R&D, and Production teams\n\nRequired Skills:\n\n - Advanced degree in physics, engineering, or a related physical science discipline, with 10+ years of scientific research experience and 5+ years managing scientists or engineers in a research, development, or technology environment\n\n - Demonstrated experience building and leading multidisciplinary teams spanning experimental science, computational modeling, engineering, and technical operations\n\n - Experience using computational models and experimental data together to interpret plasma behavior, validate scientific hypotheses, and inform technical decisions\n\n - Experience leading complex, cross-functional applied physics programs involving experimental\n\n#LI-Onsite #LI-MT1\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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\n\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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 Manager, Materials Science","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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"eb5a8219-5064-4180-ae1e-23bae19abef8","title":"Senior Materials Engineer, Material Health Monitoring","department":"Material Science","team":"Material Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-09-15T19:02:21.665+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/eb5a8219-5064-4180-ae1e-23bae19abef8","applyUrl":"https://jobs.ashbyhq.com/helion/eb5a8219-5064-4180-ae1e-23bae19abef8/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 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. You will report to the Lead Materials Scientist, and this is an onsite role located at our Everett, WA office.
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
Manage the roadmap for sensing technologies crucial for structural health monitoring in fusion generator systems
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-IB1 #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 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. You will report to the Lead Materials Scientist, and this is an onsite role located at our Everett, WA office.\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 - Manage the roadmap for sensing technologies crucial for structural health monitoring in fusion generator systems\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-IB1 #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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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 Applied Plasma Data Scientist","department":"Science","team":"Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-08-18T17:08:40.396+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 Applied 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 Applied 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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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. This onsite role is based at our Everett, WA, facility and reports to the Materials Science Manager, Metals and Dielectrics.
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
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. This onsite role is based at our Everett, WA, facility and reports to the Materials Science Manager, Metals and Dielectrics.\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\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"73a363fb-a22e-4b72-85fb-00f8881c4ac8","title":"Senior Supplier Development Engineer, Mechanical","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-09-15T19:07:48.600+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/73a363fb-a22e-4b72-85fb-00f8881c4ac8","applyUrl":"https://jobs.ashbyhq.com/helion/73a363fb-a22e-4b72-85fb-00f8881c4ac8/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 Senior 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 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:
8+ 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 Senior 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 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 - 8+ 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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"cba60be8-430b-4f1c-8fb0-c3e79a43606f","title":"R&D Operator","department":"Research & Development ","team":"Research & Development ","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-07-21T19:51:28.095+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/cba60be8-430b-4f1c-8fb0-c3e79a43606f","applyUrl":"https://jobs.ashbyhq.com/helion/cba60be8-430b-4f1c-8fb0-c3e79a43606f/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-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\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-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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"b459ceac-bf0f-4b87-8557-5579ddb26900","title":"Director of Engineering, Modules ","department":"Electrical Engineering","team":"Electrical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-07-17T15:28:57.412+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/b459ceac-bf0f-4b87-8557-5579ddb26900","applyUrl":"https://jobs.ashbyhq.com/helion/b459ceac-bf0f-4b87-8557-5579ddb26900/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 capacitor bank is the beating heart of a Helion machine: it stores the energy for every fusion pulse, delivers it in under a millisecond, and takes it back. You will own the organization that architects, designs, qualifies, and produces hardware for Orion, our first fusion power plant.
You Will:
Own the architecture of Orion's capacitor bank and its interdependencies with the machine core: requirements, decomposition, and the interfaces that let the bank, core, and controls behave as one machine
Lead and mentor a cross-functional team of electrical and mechanical engineers designing and qualifying pulsed power circuit modules for each section of the machine with ownership spanning pulsed power electrical design, mechanical and thermal solutions, and the high precision low voltage control interfaces that command them
Drive manufacturable design: partner day-to-day with manufacturing engineering to move modules from prototype test to production at rate, against a capacitor line building megajoules of pulsed power energy capacity per week
Own cost, schedule, and reliability for the module portfolio: make the architecture and design trades, set the qualification bar for hardware that must survive million-pulse campaigns and be accountable for hitting the objectives on a schedule you influenced
Work day-to-day with Research, Science, and Controls to keep module designs ahead of what the physics and operations teams learn from running machines
Build the team: hire, develop, and set the design-review and engineering standards that let the organization move from prototype to production without losing rigor
In your first year, you will baseline the Orion bank architecture, stand up the qualification program for the first production modules, and have production-intent hardware under test.
Required Skills
Bachelor's or master's degree in Electrical Engineering, Mechanical Engineering, Physics, or a related field
10+ years developing complex electromechanical hardware, including 4+ years leading multidisciplinary engineering teams (Electrical, Mechanical, Firmware, Thermal)
A track record of taking hardware from prototype through qualification into production, and of the design-for-manufacture judgment that makes that transition fast
Technical depth in at least one of: power electronics or pulsed energy systems, high-reliability electromechanical design, or high-volume hardware production with fluency across the others
Demonstrated ownership of cost, schedule, and reliability at program scale, including making and defending hard trades
Cross-functional leadership strength: this role succeeds through tactical and strategic partnership with research, science, controls, and manufacturing
Experience scaling engineering teams and processes through a prototype-to-production transition
#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\nWhat You Will Be Doing: \n\n\nThe capacitor bank is the beating heart of a Helion machine: it stores the energy for every fusion pulse, delivers it in under a millisecond, and takes it back. You will own the organization that architects, designs, qualifies, and produces hardware for Orion, our first fusion power plant.\n\n \nYou Will:\n\n - Own the architecture of Orion's capacitor bank and its interdependencies with the machine core: requirements, decomposition, and the interfaces that let the bank, core, and controls behave as one machine\n\n - Lead and mentor a cross-functional team of electrical and mechanical engineers designing and qualifying pulsed power circuit modules for each section of the machine with ownership spanning pulsed power electrical design, mechanical and thermal solutions, and the high precision low voltage control interfaces that command them\n\n - Drive manufacturable design: partner day-to-day with manufacturing engineering to move modules from prototype test to production at rate, against a capacitor line building megajoules of pulsed power energy capacity per week\n\n - Own cost, schedule, and reliability for the module portfolio: make the architecture and design trades, set the qualification bar for hardware that must survive million-pulse campaigns and be accountable for hitting the objectives on a schedule you influenced\n\n - Work day-to-day with Research, Science, and Controls to keep module designs ahead of what the physics and operations teams learn from running machines\n\n - Build the team: hire, develop, and set the design-review and engineering standards that let the organization move from prototype to production without losing rigor\n\n - In your first year, you will baseline the Orion bank architecture, stand up the qualification program for the first production modules, and have production-intent hardware under test.\n\n \nRequired Skills\n\n - Bachelor's or master's degree in Electrical Engineering, Mechanical Engineering, Physics, or a related field\n\n - 10+ years developing complex electromechanical hardware, including 4+ years leading multidisciplinary engineering teams (Electrical, Mechanical, Firmware, Thermal)\n\n - A track record of taking hardware from prototype through qualification into production, and of the design-for-manufacture judgment that makes that transition fast\n\n - Technical depth in at least one of: power electronics or pulsed energy systems, high-reliability electromechanical design, or high-volume hardware production with fluency across the others\n\n - Demonstrated ownership of cost, schedule, and reliability at program scale, including making and defending hard trades\n\n - Cross-functional leadership strength: this role succeeds through tactical and strategic partnership with research, science, controls, and manufacturing\n\n - Experience scaling engineering teams and processes through a prototype-to-production transition\n\n\n\n#LI-Onsite #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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"87dd2d09-c2cb-48f2-8eaf-d46d26769ca4","title":"Senior Manufacturing Engineer","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-10-06T21:09:38.037+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/87dd2d09-c2cb-48f2-8eaf-d46d26769ca4","applyUrl":"https://jobs.ashbyhq.com/helion/87dd2d09-c2cb-48f2-8eaf-d46d26769ca4/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 Manufacturing 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. 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
5+ 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\n\n\nWhat You Will Be Doing: \n\nHelion is hiring a Senior Manufacturing 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. 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 - 5+ 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 #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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"cb703a2b-0b03-4366-8815-19840584c419","title":"Senior Manager, Software Engineering, Plant Control","department":"Electrical Engineering","team":"Electrical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-08-17T19:40:24.435+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/cb703a2b-0b03-4366-8815-19840584c419","applyUrl":"https://jobs.ashbyhq.com/helion/cb703a2b-0b03-4366-8815-19840584c419/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.
Why This Role Matters
A Fusion power plant only produces useful results if something can control it, observe it, and make sense of what it did. The means firmware on the controllers that fire the pulses, supervisory automation that coordinates the machine as a system, the network and infrastructure backbone, and data pipelines that capture events spanning nanoseconds to years. The machine and facility are first of their kind, which means the software is too.
You will lead and scale the team that builds it. This means more than just hiring the right people. It means establishing software engineering as a core functional discipline by creating processes that enable the team to do their best work and building the structure around how software and hardware teams interact at Helion.
What You Will Be Doing
Lead and grow the Plant Control Software team, a multidisciplinary team across firmware, application software, networking, infrastructure, and cybersecurity.
Own delivery of the plant control software stack across its embedded, supervisory, networking, and data layers.
Partner closely with electrical engineering, mechanical engineering, fuel cycle, systems engineering, operations, and science. Our software ships against hardware on a shared schedule and the coordination across those boundaries is a core responsibility.
Establish the engineering principles that will be the foundation for this team as it grows including how it plans, reviews, tests, deploys, responds to faults, and hands off to operations.
Required Skills
10+ years of experience building complex control systems for hardware 3+ years of experience in a leadership role building and managing a multidisciplinary software team (software engineers, firmware/embedded engineers, with a diversity of level from early career to senior).
Depth in real-time, embedded, or control software for physical systems, sufficient to hold technical direction with a senior team.
A track record of delivering software against hardware on a shared schedule in an environment where the hardware is the product.
Experience hiring, and growing engineers over time.
The ability to work fluently across disciplinary boundaries with electrical engineers, mechanical engineers, systems engineers, operators, and scientists.
A degree in Computer Science, Electrical Engineering, or a related field, or equivalent practical experience.
#LI-Onsite #LI-RR1
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\nWhy This Role Matters\n\nA Fusion power plant only produces useful results if something can control it, observe it, and make sense of what it did. The means firmware on the controllers that fire the pulses, supervisory automation that coordinates the machine as a system, the network and infrastructure backbone, and data pipelines that capture events spanning nanoseconds to years. The machine and facility are first of their kind, which means the software is too.\n\nYou will lead and scale the team that builds it. This means more than just hiring the right people. It means establishing software engineering as a core functional discipline by creating processes that enable the team to do their best work and building the structure around how software and hardware teams interact at Helion.\n\nWhat You Will Be Doing\n\n - Lead and grow the Plant Control Software team, a multidisciplinary team across firmware, application software, networking, infrastructure, and cybersecurity.\n\n - Own delivery of the plant control software stack across its embedded, supervisory, networking, and data layers.\n\n - Partner closely with electrical engineering, mechanical engineering, fuel cycle, systems engineering, operations, and science. Our software ships against hardware on a shared schedule and the coordination across those boundaries is a core responsibility.\n\n - Establish the engineering principles that will be the foundation for this team as it grows including how it plans, reviews, tests, deploys, responds to faults, and hands off to operations.\n\nRequired Skills\n\n - 10+ years of experience building complex control systems for hardware 3+ years of experience in a leadership role building and managing a multidisciplinary software team (software engineers, firmware/embedded engineers, with a diversity of level from early career to senior).\n\n - Depth in real-time, embedded, or control software for physical systems, sufficient to hold technical direction with a senior team.\n\n - A track record of delivering software against hardware on a shared schedule in an environment where the hardware is the product.\n\n - Experience hiring, and growing engineers over time.\n\n - The ability to work fluently across disciplinary boundaries with electrical engineers, mechanical engineers, systems engineers, operators, and scientists.\n\n - A degree in Computer Science, Electrical Engineering, or a related field, or equivalent practical experience.\n\n\n\n#LI-Onsite #LI-RR1\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"cf7afcbb-f9ba-4bb8-82e8-eedc8ce31876","title":"Manufacturing Engineer, Hardware Build & Integration","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-10-06T21:09:27.797+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/cf7afcbb-f9ba-4bb8-82e8-eedc8ce31876","applyUrl":"https://jobs.ashbyhq.com/helion/cf7afcbb-f9ba-4bb8-82e8-eedc8ce31876/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 Manufacturing 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. 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\n\n\nWhat You Will Be Doing: \n\nHelion is hiring a Manufacturing 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. 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 #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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"3121fd40-bc09-4141-bc28-ffed6175da1c","title":"Corporate Communications Specialist","department":"Communications","team":"Communications","employmentType":"FullTime","location":"Seattle, WA","secondaryLocations":[],"publishedAt":"2026-09-08T17:00:37.592+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"Washington","addressCountry":"United States","addressLocality":"Seattle"}},"jobUrl":"https://jobs.ashbyhq.com/helion/3121fd40-bc09-4141-bc28-ffed6175da1c","applyUrl":"https://jobs.ashbyhq.com/helion/3121fd40-bc09-4141-bc28-ffed6175da1c/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 Corporate Communications Specialist to help execute internal and external communications during a period of rapid progress. You will manage high-visibility communications programs, including our weekly company newsletter and monthly town halls, while supporting executive communications, speaking engagements, media relations, and major company announcements.
This role requires an excellent writer who can adapt to different voices and audiences, strong organizational judgement, and the ability to independently move complex, cross-functional work forward. You will help create the systems and structure that keep communications initiatives coordinated, timely, and aligned across the company. This is an onsite role based at our Seattle, WA office, reporting to the Director of Communications.
What You Will Do
Manage the planning and execution of major internal communications programs, including Helion’s weekly newsletter and monthly company town halls
Own the internal communications calendar and serve as air traffic control for inbound communications requests, helping teams align timing, audiences, channels, and priorities
Draft and edit communications for executives, adapting to different voices, audiences, and channels
Maintain Helion’s external speaking engagement calendar, research opportunities, manage submissions and deadlines, and coordinate speaker preparation
Partner with teams across science, engineering, manufacturing, operations, policy, and People to identify stories and develop accurate, compelling communications
Track communications performance and use employee feedback, engagement data, and media results to improve programs over time
Required Skills
5+ years of experience in corporate communications, internal communications, public relations, journalism, or a related field
Excellent writing and editing skills, with demonstrated experience adapting content for different executives, audiences, and communications channels
Experience independently managing recurring communications programs and complex projects with multiple contributors and deadlines
Strong organizational and project-management skills, with an ability to build practical systems that improve team coordination and execution
Strong judgment when working with sensitive or confidential information and the ability to recognize when issues should be escalated
Ability to operate autonomously, manage competing priorities, and deliver high-quality work in a fast-paced 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 Corporate Communications Specialist to help execute internal and external communications during a period of rapid progress. You will manage high-visibility communications programs, including our weekly company newsletter and monthly town halls, while supporting executive communications, speaking engagements, media relations, and major company announcements.\n\nThis role requires an excellent writer who can adapt to different voices and audiences, strong organizational judgement, and the ability to independently move complex, cross-functional work forward. You will help create the systems and structure that keep communications initiatives coordinated, timely, and aligned across the company. This is an onsite role based at our Seattle, WA office, reporting to the Director of Communications.\n\nWhat You Will Do\n\n - Manage the planning and execution of major internal communications programs, including Helion’s weekly newsletter and monthly company town halls\n\n - Own the internal communications calendar and serve as air traffic control for inbound communications requests, helping teams align timing, audiences, channels, and priorities\n\n - Draft and edit communications for executives, adapting to different voices, audiences, and channels\n\n - Maintain Helion’s external speaking engagement calendar, research opportunities, manage submissions and deadlines, and coordinate speaker preparation\n\n - Partner with teams across science, engineering, manufacturing, operations, policy, and People to identify stories and develop accurate, compelling communications\n\n - Track communications performance and use employee feedback, engagement data, and media results to improve programs over time\n\nRequired Skills\n\n - 5+ years of experience in corporate communications, internal communications, public relations, journalism, or a related field \n\n - Excellent writing and editing skills, with demonstrated experience adapting content for different executives, audiences, and communications channels\n\n - Experience independently managing recurring communications programs and complex projects with multiple contributors and deadlines\n\n - Strong organizational and project-management skills, with an ability to build practical systems that improve team coordination and execution\n\n - Strong judgment when working with sensitive or confidential information and the ability to recognize when issues should be escalated\n\n - Ability to operate autonomously, manage competing priorities, and deliver high-quality work in a fast-paced 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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"0d5e5fdc-876e-4a79-9861-63ececbf6a66","title":"Systems Engineer","department":"Electrical Engineering","team":"Electrical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-09-16T17:32:52.384+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/0d5e5fdc-876e-4a79-9861-63ececbf6a66","applyUrl":"https://jobs.ashbyhq.com/helion/0d5e5fdc-876e-4a79-9861-63ececbf6a66/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 Systems Engineer, you will develop the system architecture and top-level requirements that hold Helion's fusion power plant together as a coherent whole — spanning the fusion machine, balance of plant, and the systems that connect them. You will work across electrical, mechanical, controls, plant, science, and business teams to decompose plant-level mission objectives into traceable subsystem requirements, drive the trade studies that shape major plant architecture decisions, and define the interfaces between subsystems and suppliers through rigorous ICDs. You will conduct technical reviews, develop verification planning against top-level plant requirements, and maintain clear traceability from plant-level objectives down through the requirements hierarchy to implemented hardware. You will drive technical consensus across functional teams and represent the plant's technical position in leadership and program-level reviews. This team is architecture- and requirements-focused, serving as the technical integration point across subsystem, science, and business teams at the plant level.
You Will
Develop and maintain Helion's top-level plant requirements, ensuring clear, traceable decomposition from plant-level mission objectives down to subsystem and component requirements.
Utilize trade studies that inform major plant architecture decisions, presenting clear technical rationale to engineering leadership.
Develop and maintain Interface Control Documents (ICDs) that define the electrical, mechanical, controls, and data interfaces between plant subsystems and with suppliers.
Conduct and facilitate design reviews (PDR/CDR-style and informal) at the plant level, ensuring requirements, interfaces, and risks are surfaced and dispositioned early.
Identify, assess, and track plant-level integration risks, and drive mitigation strategies and resolution across functional teams.
Drive configuration management and change control for plant-level requirements and baselines, evaluating the cross-system impact of proposed design changes and recommending disposition.
Partner with electrical, mechanical, controls, test, science, and business teams to ensure subsystem designs remain aligned with plant-level intent as designs mature.
Drive technical consensus across functional teams on plant-level decisions, and represent the plant's technical position in program and leadership reviews.
Scale Helion's systems engineering processes — requirements management, ICD control, and design review cadence — to meet the needs of an organization moving from prototype to production power plants.
Required Skills
Bachelor's or Master's degree in Systems Engineering, Electrical Engineering, Mechanical Engineering, or a related field.
3+ years of experience in systems engineering, with demonstrated ownership of requirements, architecture, or interface definition on complex plant or hardware systems.
Proven experience decomposing high-level plant or mission requirements into traceable, verifiable subsystem requirements.
Proven experience authoring and maintaining ICDs across multiple engineering disciplines.
Experience developing and executing verification and validation plans against system-level requirements.
Strong technical writing and communication skills, with the ability to influence design decisions across disciplines without direct authority.
Demonstrated ability to drive technical consensus and decisions across cross-functional engineering teams.
Comfort working across electrical, mechanical, controls, science, business, and software domains without being deeply expert in all of them.
Demonstrated ability to operate in fast-paced development environments requiring both engineering rigor and speed.
Desired Skills
Experience in aerospace, nuclear, energy systems, or other complex, safety-critical, first-of-kind hardware or plant programs.
Experience with requirements management and PLM tooling (Jama, DOORS, Teamcenter, or similar).
Experience with risk identification, tracking, and mitigation on complex engineering programs.
Experience applying system safety and reliability methods, including FMEA, FMECA, or fault tree analysis.
Track record of mentoring engineers toward stronger systems engineering practice.
#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 Systems Engineer, you will develop the system architecture and top-level requirements that hold Helion's fusion power plant together as a coherent whole — spanning the fusion machine, balance of plant, and the systems that connect them. You will work across electrical, mechanical, controls, plant, science, and business teams to decompose plant-level mission objectives into traceable subsystem requirements, drive the trade studies that shape major plant architecture decisions, and define the interfaces between subsystems and suppliers through rigorous ICDs. You will conduct technical reviews, develop verification planning against top-level plant requirements, and maintain clear traceability from plant-level objectives down through the requirements hierarchy to implemented hardware. You will drive technical consensus across functional teams and represent the plant's technical position in leadership and program-level reviews. This team is architecture- and requirements-focused, serving as the technical integration point across subsystem, science, and business teams at the plant level.\n\nYou Will\n\n - Develop and maintain Helion's top-level plant requirements, ensuring clear, traceable decomposition from plant-level mission objectives down to subsystem and component requirements.\n\n - Utilize trade studies that inform major plant architecture decisions, presenting clear technical rationale to engineering leadership.\n\n - Develop and maintain Interface Control Documents (ICDs) that define the electrical, mechanical, controls, and data interfaces between plant subsystems and with suppliers.\n\n - Conduct and facilitate design reviews (PDR/CDR-style and informal) at the plant level, ensuring requirements, interfaces, and risks are surfaced and dispositioned early.\n\n - Identify, assess, and track plant-level integration risks, and drive mitigation strategies and resolution across functional teams.\n\n - Drive configuration management and change control for plant-level requirements and baselines, evaluating the cross-system impact of proposed design changes and recommending disposition.\n\n - Partner with electrical, mechanical, controls, test, science, and business teams to ensure subsystem designs remain aligned with plant-level intent as designs mature.\n\n - Drive technical consensus across functional teams on plant-level decisions, and represent the plant's technical position in program and leadership reviews.\n\n - Scale Helion's systems engineering processes — requirements management, ICD control, and design review cadence — to meet the needs of an organization moving from prototype to production power plants.\n\nRequired Skills\n\n - Bachelor's or Master's degree in Systems Engineering, Electrical Engineering, Mechanical Engineering, or a related field.\n\n - 3+ years of experience in systems engineering, with demonstrated ownership of requirements, architecture, or interface definition on complex plant or hardware systems.\n\n - Proven experience decomposing high-level plant or mission requirements into traceable, verifiable subsystem requirements.\n\n - Proven experience authoring and maintaining ICDs across multiple engineering disciplines.\n\n - Experience developing and executing verification and validation plans against system-level requirements.\n\n - Strong technical writing and communication skills, with the ability to influence design decisions across disciplines without direct authority.\n\n - Demonstrated ability to drive technical consensus and decisions across cross-functional engineering teams.\n\n - Comfort working across electrical, mechanical, controls, science, business, and software domains without being deeply expert in all of them.\n\n - Demonstrated ability to operate in fast-paced development environments requiring both engineering rigor and speed.\n\n\n\nDesired Skills\n\n - Experience in aerospace, nuclear, energy systems, or other complex, safety-critical, first-of-kind hardware or plant programs.\n\n - Experience with requirements management and PLM tooling (Jama, DOORS, Teamcenter, or similar).\n\n - Experience with risk identification, tracking, and mitigation on complex engineering programs.\n\n - Experience applying system safety and reliability methods, including FMEA, FMECA, or fault tree analysis.\n\n - Track record of mentoring engineers toward stronger systems engineering practice.\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"8cfc99a9-87a1-45f4-a903-40753b658191","title":"Machine Shop Supervisor","department":"Production","team":"Production","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-09-21T23:08:49.062+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/8cfc99a9-87a1-45f4-a903-40753b658191","applyUrl":"https://jobs.ashbyhq.com/helion/8cfc99a9-87a1-45f4-a903-40753b658191/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 day-to-day operations of Helion's machine shop, directly supervising a team of machinists, welders and technicians responsible for delivering rapid prototypes, experimental hardware, and bridge-production components. In this role, you will balance people leadership, operational execution, and technical problem-solving, ensuring the machine shop remains a trusted partner to engineering teams across the company. You will report directly to the Machine Shop Manager at our Everett, WA location. Ability to work flexible hours, will be responsible for Day Shift (6am-2pm) and Evening Shift (10am-7pm).
You Will:
Lead and develop a team of machinists/welders/technicians, providing coaching, mentorship, performance management, and technical guidance
Establish daily priorities and coordinate shop resources to support aggressive prototyping, R&D, and production schedules
Foster a culture of safety, quality, accountability, and continuous improvement within the machine shop
Manage workload balancing, staffing, and resource allocation across multiple engineering programs and competing priorities
Partner closely with engineers to understand design intent and develop practical machining and manufacturing strategies
Provide design for manufacturability (DFM) feedback to improve part quality, reduce lead times, and increase manufacturing efficiency
Ensure timely delivery of machined components while maintaining high standards of workmanship and quality
Partner with Engineering, Production, Quality, and Environment Health & Safety (EHS) teams to ensure safe, aligned, and effective execution
Drive improvements in machining processes, tooling, workholding, programming, and shop workflows
Required Skills:
5+ years of experience in machining, manufacturing, and prototype fabrication
3+ years of experience leading or supervising a team.
Strong understanding of CNC and manual machining operations, tooling, workholding, setup, and fabrication processes
Demonstrated experience leading teams in fast-paced, high-mix, low-volume manufacturing or R&D environments
Strong understanding of engineering drawings, GD&T, and mechanical design requirements
Preferred Skills:
Experience supporting prototype development, production, new product introduction (NPI), or manufacturing process development
Experience collaborating closely with engineering teams and providing manufacturability feedback
Strong organizational skills with the ability to manage competing priorities and shifting schedules
#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 lead the day-to-day operations of Helion's machine shop, directly supervising a team of machinists, welders and technicians responsible for delivering rapid prototypes, experimental hardware, and bridge-production components. In this role, you will balance people leadership, operational execution, and technical problem-solving, ensuring the machine shop remains a trusted partner to engineering teams across the company. You will report directly to the Machine Shop Manager at our Everett, WA location. Ability to work flexible hours, will be responsible for Day Shift (6am-2pm) and Evening Shift (10am-7pm).\n\nYou Will:\n\n - Lead and develop a team of machinists/welders/technicians, providing coaching, mentorship, performance management, and technical guidance\n\n - Establish daily priorities and coordinate shop resources to support aggressive prototyping, R&D, and production schedules\n\n - Foster a culture of safety, quality, accountability, and continuous improvement within the machine shop\n\n - Manage workload balancing, staffing, and resource allocation across multiple engineering programs and competing priorities\n\n - Partner closely with engineers to understand design intent and develop practical machining and manufacturing strategies\n\n - Provide design for manufacturability (DFM) feedback to improve part quality, reduce lead times, and increase manufacturing efficiency\n\n - Ensure timely delivery of machined components while maintaining high standards of workmanship and quality\n\n - Partner with Engineering, Production, Quality, and Environment Health & Safety (EHS) teams to ensure safe, aligned, and effective execution\n\n - Drive improvements in machining processes, tooling, workholding, programming, and shop workflows\n\nRequired Skills:\n\n - 5+ years of experience in machining, manufacturing, and prototype fabrication\n\n - 3+ years of experience leading or supervising a team.\n\n - Strong understanding of CNC and manual machining operations, tooling, workholding, setup, and fabrication processes\n\n - Demonstrated experience leading teams in fast-paced, high-mix, low-volume manufacturing or R&D environments\n\n - Strong understanding of engineering drawings, GD&T, and mechanical design requirements\n\nPreferred Skills:\n\n - Experience supporting prototype development, production, new product introduction (NPI), or manufacturing process development\n\n - Experience collaborating closely with engineering teams and providing manufacturability feedback\n\n - Strong organizational skills with the ability to manage competing priorities and shifting schedules\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"fed5be1d-f318-49e2-9ff8-2b6a5ad80569","title":"Senior Financial Analyst (Contract)","department":"Finance","team":"Finance","employmentType":"Contract","location":"Seattle, WA","secondaryLocations":[],"publishedAt":"2026-09-18T22:42:09.133+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"Washington","addressCountry":"United States","addressLocality":"Seattle"}},"jobUrl":"https://jobs.ashbyhq.com/helion/fed5be1d-f318-49e2-9ff8-2b6a5ad80569","applyUrl":"https://jobs.ashbyhq.com/helion/fed5be1d-f318-49e2-9ff8-2b6a5ad80569/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 join the Financial Planning & Analysis (FP&A) team to support monthly financial reporting and business operations across Communications, Marketing, Security, Operations, and Facilities. You will help set up departmental management accounts, support forecasting and budgeting, and partner with department leaders to provide clear visibility into financial performance and year-to-date spending. You will also contribute to key finance projects and build financial models to support planning and decision-making.
This is an onsite contract role based in Seattle, WA, reporting to the Finance Director of FP&A.
You Will:
Work with business and technology business managers across the company to provide financial guidance, influence decision-making, and support strategic planning
Own budgeting, forecasting, and financial models, providing accurate projections, variance analysis, and actionable business insights
Develop and enhance financial reporting using the latest AI finance toolsets, and KPI metrics to improve visibility and drive data-informed decisions
Analyze operating expenses and capital expenditures, identify risks, opportunities, and recommendations to improve business performance
Leverage Excel, ERP systems (NetSuite, Oracle Fusion or SAP preferred), BI platforms (Power BI, Tableau), and AI tools (ChatGPT, Copilot, Claude) to enhance reporting
Required Skills:
4–6 years of experience in FP&A, corporate finance, or financial analysis within technology, manufacturing, robotics, energy, or similar high growth technology environment
Experience owning budgets, forecasts, financial models, and variance analysis, with a strong understanding of financial statements and planning processes
Advanced Excel skills with experience working with large datasets; ERP experience (NetSuiteOracle Fusion or SAP preferred) are a plus
Knowledge and practical application of forecasting tools (Anaplan, Adaptive or Pigment) are a plus
Proficiency with BI tools (Power BI, Tableau) and practical experience leveraging AI tools (ChatGPT, Copilot, Claude, etc.) to improve financial analysis and reporting
Strong analytical, communication, and cross functional working partnering skills with the ability to translate financial data into actionable insights for technical and non-technical stakeholders
Bachelor's degree in Finance, Accounting, Economics, Business, or a related field
#LI-Onsite #LI-MM1
","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 join the Financial Planning & Analysis (FP&A) team to support monthly financial reporting and business operations across Communications, Marketing, Security, Operations, and Facilities. You will help set up departmental management accounts, support forecasting and budgeting, and partner with department leaders to provide clear visibility into financial performance and year-to-date spending. You will also contribute to key finance projects and build financial models to support planning and decision-making.\n\nThis is an onsite contract role based in Seattle, WA, reporting to the Finance Director of FP&A.\n\nYou Will:\n\n - Work with business and technology business managers across the company to provide financial guidance, influence decision-making, and support strategic planning\n\n - Own budgeting, forecasting, and financial models, providing accurate projections, variance analysis, and actionable business insights\n\n - Develop and enhance financial reporting using the latest AI finance toolsets, and KPI metrics to improve visibility and drive data-informed decisions\n\n - Analyze operating expenses and capital expenditures, identify risks, opportunities, and recommendations to improve business performance\n\n - Leverage Excel, ERP systems (NetSuite, Oracle Fusion or SAP preferred), BI platforms (Power BI, Tableau), and AI tools (ChatGPT, Copilot, Claude) to enhance reporting\n\nRequired Skills:\n\n - 4–6 years of experience in FP&A, corporate finance, or financial analysis within technology, manufacturing, robotics, energy, or similar high growth technology environment\n\n - Experience owning budgets, forecasts, financial models, and variance analysis, with a strong understanding of financial statements and planning processes\n\n - Advanced Excel skills with experience working with large datasets; ERP experience (NetSuiteOracle Fusion or SAP preferred) are a plus\n\n - Knowledge and practical application of forecasting tools (Anaplan, Adaptive or Pigment) are a plus\n\n - Proficiency with BI tools (Power BI, Tableau) and practical experience leveraging AI tools (ChatGPT, Copilot, Claude, etc.) to improve financial analysis and reporting\n\n - Strong analytical, communication, and cross functional working partnering skills with the ability to translate financial data into actionable insights for technical and non-technical stakeholders\n\n - Bachelor's degree in Finance, Accounting, Economics, Business, or a related field\n\n#LI-Onsite #LI-MM1"},{"id":"8f4c7b4f-1d9b-4355-9f7a-684dc8119687","title":"Welder","department":"Production","team":"Production","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-09-22T17:27:12.218+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/8f4c7b4f-1d9b-4355-9f7a-684dc8119687","applyUrl":"https://jobs.ashbyhq.com/helion/8f4c7b4f-1d9b-4355-9f7a-684dc8119687/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 Welder at Helion, you will play a key role in building and repairing custom components. You will work with a variety of tools and equipment to fabricate parts, assist with modifications, and ensure safety and quality. Your work will directly impact Helion's ability to maintain production efficiency and uphold our commitment to high-quality standards. You will report to one of our Production Supervisors at our facility in Everett, WA.
You Will:
Lead welding and fabrication projects to manufacture custom assemblies supporting Helion generator production
Support decision making by partnering with engineers and Production Supervisor(s)
Work directly with Design Engineering to provide excellent DFM (design for manufacturability) feedback that supports rapid manufacturing of parts and assemblies
Perform welding and fabrication to build and repair custom components using tools such as plasma cutters, MIG/TIG/arc welders, and oxyacetylene torches
Cut, join, and shape metal parts to meet product specifications and unique fabrication needs
Interpret and work from engineering assembly and fabrication drawings
Operate saws, grinders, drill presses, and other power and hand tools for equipment fabrication
Move materials or supplies using forklifts and cranes to support production and modifications
Follow detailed instructions to fabricate or repair requested equipment
Communicate effectively with shop personnel regarding design and fabrication requirements
Ensure safe working conditions by wearing required personal protective equipment (PPE) when necessary
Required Skills:
Knowledge of multiple welding rods, fluxes, and metals used in the fabrication process
Understanding of occupational safety practices and welding trade procedures
Experience operating MIG/TIG welders, plasma cutters, oxyacetylene torches, and related tools
Ability to calculate mathematical problems for measurements and quantities
Proficiency in reading and interpreting technical engineering drawings
Physical ability to lift up to 60 pounds and perform tasks such as standing, bending, and kneeling for extended periods
#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 Welder at Helion, you will play a key role in building and repairing custom components. You will work with a variety of tools and equipment to fabricate parts, assist with modifications, and ensure safety and quality. Your work will directly impact Helion's ability to maintain production efficiency and uphold our commitment to high-quality standards. You will report to one of our Production Supervisors at our facility in Everett, WA.\n\nYou Will:\n\n - Lead welding and fabrication projects to manufacture custom assemblies supporting Helion generator production\n\n - Support decision making by partnering with engineers and Production Supervisor(s)\n\n - Work directly with Design Engineering to provide excellent DFM (design for manufacturability) feedback that supports rapid manufacturing of parts and assemblies\n\n - Perform welding and fabrication to build and repair custom components using tools such as plasma cutters, MIG/TIG/arc welders, and oxyacetylene torches\n\n - Cut, join, and shape metal parts to meet product specifications and unique fabrication needs\n\n - Interpret and work from engineering assembly and fabrication drawings\n\n - Operate saws, grinders, drill presses, and other power and hand tools for equipment fabrication\n\n - Move materials or supplies using forklifts and cranes to support production and modifications\n\n - Follow detailed instructions to fabricate or repair requested equipment\n\n - Communicate effectively with shop personnel regarding design and fabrication requirements\n\n - Ensure safe working conditions by wearing required personal protective equipment (PPE) when necessary\n\nRequired Skills:\n\n - Knowledge of multiple welding rods, fluxes, and metals used in the fabrication process\n\n - Understanding of occupational safety practices and welding trade procedures\n\n - Experience operating MIG/TIG welders, plasma cutters, oxyacetylene torches, and related tools\n\n - Ability to calculate mathematical problems for measurements and quantities\n\n - Proficiency in reading and interpreting technical engineering drawings\n\n - Physical ability to lift up to 60 pounds and perform tasks such as standing, bending, and kneeling for extended periods\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"57ee4642-5d4e-4204-8b8e-ae1945800b35","title":"Senior Electrical Engineer – Dielectric Materials Development","department":"Material Science","team":"Material Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-09-23T17:24:57.886+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/57ee4642-5d4e-4204-8b8e-ae1945800b35","applyUrl":"https://jobs.ashbyhq.com/helion/57ee4642-5d4e-4204-8b8e-ae1945800b35/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 development, validation, and deployment of advanced ceramic and high-performance dielectric materials for extreme electrical, thermal, mechanical, and radiation environments. You will provide critical support to work spanning material and component design, prototyping, electrical characterization, qualification, and manufacturing scale-up. This onsite role is based at our Everett, WA, facility and reports to the Materials Science Manager, Metals and Dielectrics.
You Will:
Lead high-impact, multidisciplinary projects to develop and evaluate the electrical performance of advanced ceramic and dielectric materials for high-voltage operation under fusion-relevant conditions.
Define electrical requirements, test methods, and acceptance criteria for insulating and resistive materials used in high-field magnet systems.
Design and execute experiments to characterize properties such as dielectric strength, electrical resistivity, permittivity, dielectric loss, and performance under combined electrical, thermal, mechanical, and radiation loading.
Translate material-level test results into actionable engineering requirements and design recommendations for Helion’s next-generation fusion systems.
Serve as Helion’s subject-matter expert for dielectric materials and electrical insulation operating in a high-voltage environment, providing technical guidance across engineering and R&D teams.
Own projects from initial concept and material selection through prototyping, design reviews, and qualification for production.
Work effectively amid evolving requirements and technical uncertainty, balancing risk, rigor, and schedule to maintain program delivery.
Required Skills:
Advanced degree in Electrical Engineering, or a related field
An extensive understanding of electrically insulating and dielectric materials, typically demonstrated by 8+ years of hands-on work
Hands-on experience with electrical testing and materials characterization, including the design, execution, and interpretation of experiments.
Demonstrated success developing or qualifying ceramic or dielectric materials for a commercial product or large, integrated engineering system, such as an engine, turbine, generator, magnet, or high-voltage assembly.
Experience planning and leading R&D programs governed by defined milestones, technical reviews, and delivery schedules.
Experience communicating material behavior and test results to multidisciplinary engineering teams and translating findings into design decisions.
#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 development, validation, and deployment of advanced ceramic and high-performance dielectric materials for extreme electrical, thermal, mechanical, and radiation environments. You will provide critical support to work spanning material and component design, prototyping, electrical characterization, qualification, and manufacturing scale-up. This onsite role is based at our Everett, WA, facility and reports to the Materials Science Manager, Metals and Dielectrics.\n\nYou Will:\n\n - Lead high-impact, multidisciplinary projects to develop and evaluate the electrical performance of advanced ceramic and dielectric materials for high-voltage operation under fusion-relevant conditions. \n\n - Define electrical requirements, test methods, and acceptance criteria for insulating and resistive materials used in high-field magnet systems. \n\n - Design and execute experiments to characterize properties such as dielectric strength, electrical resistivity, permittivity, dielectric loss, and performance under combined electrical, thermal, mechanical, and radiation loading. \n\n - Translate material-level test results into actionable engineering requirements and design recommendations for Helion’s next-generation fusion systems. \n\n - Serve as Helion’s subject-matter expert for dielectric materials and electrical insulation operating in a high-voltage environment, providing technical guidance across engineering and R&D teams. \n\n - Own projects from initial concept and material selection through prototyping, design reviews, and qualification for production.\n\n - Work effectively amid evolving requirements and technical uncertainty, balancing risk, rigor, and schedule to maintain program delivery.\n\nRequired Skills:\n\n - Advanced degree in Electrical Engineering, or a related field\n\n - An extensive understanding of electrically insulating and dielectric materials, typically demonstrated by 8+ years of hands-on work\n\n - Hands-on experience with electrical testing and materials characterization, including the design, execution, and interpretation of experiments. \n\n - Demonstrated success developing or qualifying ceramic or dielectric materials for a commercial product or large, integrated engineering system, such as an engine, turbine, generator, magnet, or high-voltage assembly. \n\n - Experience planning and leading R&D programs governed by defined milestones, technical reviews, and delivery schedules. \n\n - Experience communicating material behavior and test results to multidisciplinary engineering teams and translating findings into design decisions.\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"9845ec33-1153-455d-95ee-dcb138475fd5","title":"Senior Maintenance Technician","department":"Capacitor Manufacturing","team":"Capacitor Manufacturing","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-09-23T23:57:36.837+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/9845ec33-1153-455d-95ee-dcb138475fd5","applyUrl":"https://jobs.ashbyhq.com/helion/9845ec33-1153-455d-95ee-dcb138475fd5/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 maintain production equipment used to build high-voltage capacitors and integrated modules for Helion’s fusion reactor systems. You will troubleshoot electrical and mechanical issues, perform preventive and corrective maintenance, restore equipment safely, and improve equipment readiness.
This is an onsite role in Everett, WA reporting to the Supervisor of Technical Maintenance, and may require schedule flexibility as operations grow toward multi-shift and eventual 24/7 coverage.
You Will
Maintain and repair automated and industrial production equipment, including high-voltage test systems, laser welding equipment, soldering equipment, material handling equipment, pumps, presses, conveyors, and related systems.
Work safely around industrial hazards including high voltage, stored energy, pressurized systems, lasers, and robotic equipment using established safety controls such as LOTO and electrical safe work practices.
Troubleshoot electrical, mechanical, and basic controls issues using schematics, manuals, OEM documentation, maintenance history, and structured escalation.
Install, replace, and repair common electrical and mechanical components such as sensors, relays, contactors, motors, bearings, belts, gearboxes, pumps, valves, and seals.
Document work in a CMMS or similar maintenance system, including labor, failures, repairs, parts, and equipment history.
Support emergency repairs and reliability improvement by identifying failure modes, needed tools and spares, return-to-service checks, and opportunities to improve PM quality, uptime, MTTR, and equipment readiness.
Other duties as required.
Required Skills
5+ years of relevant hands-on technical maintenance experience. Relevant backgrounds may include industrial or manufacturing maintenance, equipment service, military maintenance, aviation, automotive diagnostics, field service, or machine building.
High school diploma or equivalent required; technical degree, apprenticeship, military technical training, or formal controls training may be considered in place of some direct experience.
Electro-mechanical troubleshooting capability, with depth in either electrical or mechanical systems and safe working ability across both.
Ability to troubleshoot industrial electrical and mechanical systems such as 480V equipment, motors, drives, sensors, power distribution, safety circuits, bearings, belts, gearboxes, pumps, valves, pneumatics, hydraulics, tooling, and mechanical assemblies.
Ability to perform basic controls troubleshooting, including fault codes, sensor and actuator checks, field device replacement, and escalation of programming, logic, robot, HMI, or drive configuration issues.
Ability to read and use schematics, manuals, OEM documentation, work instructions, and maintenance records to troubleshoot equipment.
Ability to document maintenance activity in a CMMS or similar work order system and support critical equipment issues in a fast-paced manufacturing environment.
Ability to work assigned schedules as operations evolve, including day, swing, night, rotating, overtime, weekend, or on-call coverage as needed.
Ability to lift up to 49 pounds unassisted, stand and walk during shifts up to 12 hours, and regularly bend, lift, stretch, and reach below the waist and above the head.
#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\nIn this role, you will maintain production equipment used to build high-voltage capacitors and integrated modules for Helion’s fusion reactor systems. You will troubleshoot electrical and mechanical issues, perform preventive and corrective maintenance, restore equipment safely, and improve equipment readiness.\n\nThis is an onsite role in Everett, WA reporting to the Supervisor of Technical Maintenance, and may require schedule flexibility as operations grow toward multi-shift and eventual 24/7 coverage.\n\nYou Will\n\n - Maintain and repair automated and industrial production equipment, including high-voltage test systems, laser welding equipment, soldering equipment, material handling equipment, pumps, presses, conveyors, and related systems.\n\n - Work safely around industrial hazards including high voltage, stored energy, pressurized systems, lasers, and robotic equipment using established safety controls such as LOTO and electrical safe work practices.\n\n - Troubleshoot electrical, mechanical, and basic controls issues using schematics, manuals, OEM documentation, maintenance history, and structured escalation.\n\n - Install, replace, and repair common electrical and mechanical components such as sensors, relays, contactors, motors, bearings, belts, gearboxes, pumps, valves, and seals.\n\n - Document work in a CMMS or similar maintenance system, including labor, failures, repairs, parts, and equipment history.\n\n - Support emergency repairs and reliability improvement by identifying failure modes, needed tools and spares, return-to-service checks, and opportunities to improve PM quality, uptime, MTTR, and equipment readiness.\n\n - Other duties as required.\n\n\n\nRequired Skills\n\n - 5+ years of relevant hands-on technical maintenance experience. Relevant backgrounds may include industrial or manufacturing maintenance, equipment service, military maintenance, aviation, automotive diagnostics, field service, or machine building.\n\n - High school diploma or equivalent required; technical degree, apprenticeship, military technical training, or formal controls training may be considered in place of some direct experience.\n\n - Electro-mechanical troubleshooting capability, with depth in either electrical or mechanical systems and safe working ability across both.\n\n - Ability to troubleshoot industrial electrical and mechanical systems such as 480V equipment, motors, drives, sensors, power distribution, safety circuits, bearings, belts, gearboxes, pumps, valves, pneumatics, hydraulics, tooling, and mechanical assemblies.\n\n - Ability to perform basic controls troubleshooting, including fault codes, sensor and actuator checks, field device replacement, and escalation of programming, logic, robot, HMI, or drive configuration issues.\n\n - Ability to read and use schematics, manuals, OEM documentation, work instructions, and maintenance records to troubleshoot equipment.\n\n - Ability to document maintenance activity in a CMMS or similar work order system and support critical equipment issues in a fast-paced manufacturing environment.\n\n - Ability to work assigned schedules as operations evolve, including day, swing, night, rotating, overtime, weekend, or on-call coverage as needed.\n\n - Ability to lift up to 49 pounds unassisted, stand and walk during shifts up to 12 hours, and regularly bend, lift, stretch, and reach below the waist and above the head.\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"40a98550-5d36-4e7d-b132-b12fffc08151","title":"Senior Controls Technician","department":"Capacitor Manufacturing","team":"Capacitor Manufacturing","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-09-23T23:57:02.046+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/40a98550-5d36-4e7d-b132-b12fffc08151","applyUrl":"https://jobs.ashbyhq.com/helion/40a98550-5d36-4e7d-b132-b12fffc08151/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'll support the reliability, uptime, and continuous improvement of manufacturing controls systems used to build high-voltage capacitors and integrated modules for Helion’s fusion reactor systems. We’re looking for a Senior Controls Technician to troubleshoot complex automated equipment, support controls-related maintenance and commissioning, and partner with Controls Engineering and Factory Development teams to improve system architecture, maintainability, and readiness for scale.
This is an onsite role in Everett, WA reporting to the Supervisor of Technical Maintenance, and may require schedule flexibility as operations grow toward multi-shift and eventual 24/7 coverage.
You Will
Maintain, troubleshoot, and restore complex automated manufacturing equipment, including PLC/HMI-controlled systems, instrumentation, drives, sensors, safety circuits, robotics, and SCADA interfaces.
Support production uptime through rapid diagnosis of electrical, controls, network, and automation faults while following lockout/tagout, electrical safety, and established escalation practices.
Perform controlled minor updates to PLC/HMI logic, parameters, alarms, recipes, and operator interfaces to support equipment operation, maintenance, and reliability; escalate larger changes through engineering change control.
Support controls checkout, commissioning, validation, and handoff for new or modified equipment in partnership with Controls Engineering, Factory Development, equipment vendors, and system integrators.
Improve maintainability by documenting faults, root causes, corrective actions, procedures, and troubleshooting guides in the CMMS and relevant controls documentation.
Identify recurring controls issues, weak architectures, obsolete components, and support gaps; help define practical improvements that reduce downtime, improve technician leverage, and prepare systems for production scale.
Other duties as required.
Required Skills
5+ years of experience supporting industrial automation, controls, or production equipment in a manufacturing or industrial environment.
High school diploma or equivalent required; technical degree, apprenticeship, military technical training, or formal controls training may be considered in place of some direct experience.
Strong hands-on troubleshooting ability with PLC/HMI-controlled equipment, electrical controls, instrumentation, sensors, drives (VFD and Servo), industrial networks, electrically and pneumatically controlled valves and machine safety systems.
Ability to read and understand electrical schematics and process diagrams
Experience supporting robotics and SCADA/HMI platforms used in automated manufacturing environments; examples may include Fanuc, Ignition, FactoryTalk, Rockwell/Studio 5000, Siemens/TIA Portal, or similar systems.
Ability to safely troubleshoot energized industrial systems when appropriate, while following lockout/tagout, electrical safety (NFPA 70E), arc-flash, machine guarding, and site safety procedures.
Ability to document troubleshooting steps, root cause, corrective actions, procedures, and minor controls changes clearly to support handoff, repeatability, and future maintenance.
Ability to work assigned schedules as operations evolve, including day, swing, night, rotating, overtime, weekend, or on-call coverage as needed.
Ability to lift up to 49 pounds unassisted, stand and walk during shifts up to 12 hours, and regularly bend, lift, stretch, and reach below the waist and above the head.
#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\nIn this role, you'll support the reliability, uptime, and continuous improvement of manufacturing controls systems used to build high-voltage capacitors and integrated modules for Helion’s fusion reactor systems. We’re looking for a Senior Controls Technician to troubleshoot complex automated equipment, support controls-related maintenance and commissioning, and partner with Controls Engineering and Factory Development teams to improve system architecture, maintainability, and readiness for scale.\n\nThis is an onsite role in Everett, WA reporting to the Supervisor of Technical Maintenance, and may require schedule flexibility as operations grow toward multi-shift and eventual 24/7 coverage.\n\nYou Will\n\n - Maintain, troubleshoot, and restore complex automated manufacturing equipment, including PLC/HMI-controlled systems, instrumentation, drives, sensors, safety circuits, robotics, and SCADA interfaces.\n\n - Support production uptime through rapid diagnosis of electrical, controls, network, and automation faults while following lockout/tagout, electrical safety, and established escalation practices.\n\n - Perform controlled minor updates to PLC/HMI logic, parameters, alarms, recipes, and operator interfaces to support equipment operation, maintenance, and reliability; escalate larger changes through engineering change control.\n\n - Support controls checkout, commissioning, validation, and handoff for new or modified equipment in partnership with Controls Engineering, Factory Development, equipment vendors, and system integrators.\n\n - Improve maintainability by documenting faults, root causes, corrective actions, procedures, and troubleshooting guides in the CMMS and relevant controls documentation.\n\n - Identify recurring controls issues, weak architectures, obsolete components, and support gaps; help define practical improvements that reduce downtime, improve technician leverage, and prepare systems for production scale.\n\n - Other duties as required.\n\n\n\nRequired Skills\n\n - 5+ years of experience supporting industrial automation, controls, or production equipment in a manufacturing or industrial environment.\n\n - High school diploma or equivalent required; technical degree, apprenticeship, military technical training, or formal controls training may be considered in place of some direct experience.\n\n - Strong hands-on troubleshooting ability with PLC/HMI-controlled equipment, electrical controls, instrumentation, sensors, drives (VFD and Servo), industrial networks, electrically and pneumatically controlled valves and machine safety systems.\n\n - Ability to read and understand electrical schematics and process diagrams\n\n - Experience supporting robotics and SCADA/HMI platforms used in automated manufacturing environments; examples may include Fanuc, Ignition, FactoryTalk, Rockwell/Studio 5000, Siemens/TIA Portal, or similar systems.\n\n - Ability to safely troubleshoot energized industrial systems when appropriate, while following lockout/tagout, electrical safety (NFPA 70E), arc-flash, machine guarding, and site safety procedures.\n\n - Ability to document troubleshooting steps, root cause, corrective actions, procedures, and minor controls changes clearly to support handoff, repeatability, and future maintenance.\n\n - Ability to work assigned schedules as operations evolve, including day, swing, night, rotating, overtime, weekend, or on-call coverage as needed.\n\n - Ability to lift up to 49 pounds unassisted, stand and walk during shifts up to 12 hours, and regularly bend, lift, stretch, and reach below the waist and above the head.\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"ec4f7ae2-7b06-4c2e-98e8-df14089ae5dc","title":"Senior Systems Engineer","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-09-23T22:35:33.278+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/ec4f7ae2-7b06-4c2e-98e8-df14089ae5dc","applyUrl":"https://jobs.ashbyhq.com/helion/ec4f7ae2-7b06-4c2e-98e8-df14089ae5dc/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 Sr Systems Engineer, you will own the system architecture and top-level requirements that hold Helion's fusion power plant together as a coherent whole — spanning the fusion machine, balance of plant, and the systems that connect them. You will work across electrical, mechanical, controls, plant, science, and business teams to decompose plant-level mission objectives into traceable subsystem requirements, drive the trade studies that shape major plant architecture decisions, and define the interfaces between subsystems and suppliers through rigorous ICDs. You will lead technical reviews, own verification planning against top-level plant requirements, and maintain clear traceability from plant-level objectives down through the requirements hierarchy to implemented hardware. You will drive technical consensus across functional teams and represent the plant's technical position in leadership and program-level reviews. This role is architecture- and requirements-focused, serving as the technical integration point across subsystem, science, and business teams at the plant level.
You Will
Own and maintain Helion's top-level plant requirements, ensuring clear, traceable decomposition from plant-level mission objectives down to subsystem and component requirements.
Lead trade studies that inform major plant architecture decisions, presenting clear technical rationale to engineering leadership.
Develop and own Interface Control Documents (ICDs) that define the electrical, mechanical, controls, and data interfaces between plant subsystems and with suppliers.
Lead and facilitate design reviews (PDR/CDR-style and informal) at the plant level, ensuring requirements, interfaces, and risks are surfaced and dispositioned early.
Identify, assess, and track plant-level integration risks, and drive mitigation strategies and resolution across functional teams.
Drive configuration management and change control for plant-level requirements and baselines, evaluating the cross-system impact of proposed design changes and recommending disposition.
Partner with electrical, mechanical, controls, test, science, and business teams to ensure subsystem designs remain aligned with plant-level intent as designs mature.
Drive technical consensus across functional teams on plant-level decisions, and represent the plant's technical position in program and leadership reviews.
Scale Helion's systems engineering processes — requirements management, ICD control, and design review cadence — to meet the needs of an organization moving from prototype to production power plants.
Required Skills
Bachelor's or Master's degree in Systems Engineering, Electrical Engineering, Mechanical Engineering, or a related field.
8+ years of experience in systems engineering, with demonstrated ownership of requirements, architecture, or interface definition on complex plant or hardware systems.
Proven experience decomposing high-level plant or mission requirements into traceable, verifiable subsystem requirements.
Proven experience authoring and owning ICDs across multiple engineering disciplines.
Experience developing and executing verification and validation plans against system-level requirements.
Strong technical writing and communication skills, with the ability to influence design decisions across disciplines without direct authority.
Demonstrated ability to drive technical consensus and decisions across cross-functional engineering teams.
Comfort working across electrical, mechanical, controls, science, business, and software domains without being deeply expert in all of them.
Demonstrated ability to operate in fast-paced development environments requiring both engineering rigor and speed.
Desired Skills
Experience in aerospace, nuclear, energy systems, or other complex, safety-critical, first-of-kind hardware or plant programs.
Experience with requirements management and PLM tooling (Jama, DOORS, Teamcenter, or similar).
Experience with risk identification, tracking, and mitigation on complex engineering programs.
Experience applying system safety and reliability methods, including FMEA, FMECA, or fault tree analysis.
Track record of mentoring engineers toward stronger systems engineering practice.
#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 Sr Systems Engineer, you will own the system architecture and top-level requirements that hold Helion's fusion power plant together as a coherent whole — spanning the fusion machine, balance of plant, and the systems that connect them. You will work across electrical, mechanical, controls, plant, science, and business teams to decompose plant-level mission objectives into traceable subsystem requirements, drive the trade studies that shape major plant architecture decisions, and define the interfaces between subsystems and suppliers through rigorous ICDs. You will lead technical reviews, own verification planning against top-level plant requirements, and maintain clear traceability from plant-level objectives down through the requirements hierarchy to implemented hardware. You will drive technical consensus across functional teams and represent the plant's technical position in leadership and program-level reviews. This role is architecture- and requirements-focused, serving as the technical integration point across subsystem, science, and business teams at the plant level.\n\nYou Will\n\n - Own and maintain Helion's top-level plant requirements, ensuring clear, traceable decomposition from plant-level mission objectives down to subsystem and component requirements.\n\n - Lead trade studies that inform major plant architecture decisions, presenting clear technical rationale to engineering leadership.\n\n - Develop and own Interface Control Documents (ICDs) that define the electrical, mechanical, controls, and data interfaces between plant subsystems and with suppliers.\n\n - Lead and facilitate design reviews (PDR/CDR-style and informal) at the plant level, ensuring requirements, interfaces, and risks are surfaced and dispositioned early.\n\n - Identify, assess, and track plant-level integration risks, and drive mitigation strategies and resolution across functional teams.\n\n - Drive configuration management and change control for plant-level requirements and baselines, evaluating the cross-system impact of proposed design changes and recommending disposition.\n\n - Partner with electrical, mechanical, controls, test, science, and business teams to ensure subsystem designs remain aligned with plant-level intent as designs mature.\n\n - Drive technical consensus across functional teams on plant-level decisions, and represent the plant's technical position in program and leadership reviews.\n\n - Scale Helion's systems engineering processes — requirements management, ICD control, and design review cadence — to meet the needs of an organization moving from prototype to production power plants.\n\nRequired Skills\n\n - Bachelor's or Master's degree in Systems Engineering, Electrical Engineering, Mechanical Engineering, or a related field.\n\n - 8+ years of experience in systems engineering, with demonstrated ownership of requirements, architecture, or interface definition on complex plant or hardware systems.\n\n - Proven experience decomposing high-level plant or mission requirements into traceable, verifiable subsystem requirements.\n\n - Proven experience authoring and owning ICDs across multiple engineering disciplines.\n\n - Experience developing and executing verification and validation plans against system-level requirements.\n\n - Strong technical writing and communication skills, with the ability to influence design decisions across disciplines without direct authority.\n\n - Demonstrated ability to drive technical consensus and decisions across cross-functional engineering teams.\n\n - Comfort working across electrical, mechanical, controls, science, business, and software domains without being deeply expert in all of them.\n\n - Demonstrated ability to operate in fast-paced development environments requiring both engineering rigor and speed.\n \n \n\nDesired Skills\n\n - Experience in aerospace, nuclear, energy systems, or other complex, safety-critical, first-of-kind hardware or plant programs.\n\n - Experience with requirements management and PLM tooling (Jama, DOORS, Teamcenter, or similar).\n\n - Experience with risk identification, tracking, and mitigation on complex engineering programs.\n\n - Experience applying system safety and reliability methods, including FMEA, FMECA, or fault tree analysis.\n\n - Track record of mentoring engineers toward stronger systems engineering practice.\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"c2eaddbd-8e7c-4d6b-9a6a-d29a7ae58f52","title":"Facilities Operations Manager","department":"Facilities","team":"Facilities","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-09-25T20:20:59.262+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/c2eaddbd-8e7c-4d6b-9a6a-d29a7ae58f52","applyUrl":"https://jobs.ashbyhq.com/helion/c2eaddbd-8e7c-4d6b-9a6a-d29a7ae58f52/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 our Facilities Operations Manager, you'll lead the planning and execution of facilities operations across our growing portfolio—bridging day-to-day reliability with long-term infrastructure strategy. You'll serve as a key partner to Facilities leadership, driving operational rigor, vendor performance, and capital planning support.
We are looking for an engaged leader who thrives in a high-growth environment and balances urgency with disciplined execution. You will bring strong people leadership, sound operational judgment, and high standards for accountability and follow-through. This is an onsite role reporting directly to our Director of Facilities in our Everett, WA headquarters.
You Will:
Lead and develop the facilities operations team, setting clear expectations, balancing workloads, and strengthening performance through coaching and accountability
Own day-to-day facilities operations across multiple sites, serving as the primary point of contact for operational issues; overseeing Maintenance and Environmental Services delivery, staffing coverage, vendor performance, stakeholder communication, and timely issue resolution through closeout
Own and improve the CMMS, asset records, and preventive maintenance programs, using equipment condition and performance data to inform maintenance and replacement priorities
Oversee inspections, servicing, and corrective actions for critical building systems and industrial equipment, partnering with EHS and Security to maintain safe, ready sites
Build scalable operational processes and use performance metrics to identify recurring issues, remove roadblocks, and coordinate lasting improvements with technical experts and Facilities leadership
Apply building-systems knowledge to assess issues and recommendations, and represent Facilities Operations in standups and executive discussions with clear updates on risks, trade-offs, and next steps
Required Skills:
8+ years of experience in facilities operations or related roles, including direct people management and demonstrated success coaching and developing teams
Experience leading operations in a startup, high-growth, or similarly rigorous environment, with high standards for accountability and execution
Working knowledge of building systems, including HVAC, electrical, mechanical, and fire/life safety systems, with the ability to assess issues, evaluate technical recommendations, and engage the appropriate expertise
Experience with CMMS ownership and configuration, preventive maintenance program development, asset management, and vendor oversight
Demonstrated ability to navigate changing priorities, make sound decisions with incomplete information, and resolve recurring problems without compromising safety or quality
Strong written and verbal communication with frontline employees, technical partners, and executives, including the ability to tailor technical detail to the audience, create clear operational documentation, and constructively challenge assumptions
Experience supporting manufacturing, hardware development, R&D, or other technically complex facilities is preferred. Hands-on maintenance or trade experience is helpful but not required
#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 our Facilities Operations Manager, you'll lead the planning and execution of facilities operations across our growing portfolio—bridging day-to-day reliability with long-term infrastructure strategy. You'll serve as a key partner to Facilities leadership, driving operational rigor, vendor performance, and capital planning support.\n\nWe are looking for an engaged leader who thrives in a high-growth environment and balances urgency with disciplined execution. You will bring strong people leadership, sound operational judgment, and high standards for accountability and follow-through. This is an onsite role reporting directly to our Director of Facilities in our Everett, WA headquarters.\n\nYou Will:\n\n - Lead and develop the facilities operations team, setting clear expectations, balancing workloads, and strengthening performance through coaching and accountability\n\n - Own day-to-day facilities operations across multiple sites, serving as the primary point of contact for operational issues; overseeing Maintenance and Environmental Services delivery, staffing coverage, vendor performance, stakeholder communication, and timely issue resolution through closeout\n\n - Own and improve the CMMS, asset records, and preventive maintenance programs, using equipment condition and performance data to inform maintenance and replacement priorities\n\n - Oversee inspections, servicing, and corrective actions for critical building systems and industrial equipment, partnering with EHS and Security to maintain safe, ready sites\n\n - Build scalable operational processes and use performance metrics to identify recurring issues, remove roadblocks, and coordinate lasting improvements with technical experts and Facilities leadership\n\n - Apply building-systems knowledge to assess issues and recommendations, and represent Facilities Operations in standups and executive discussions with clear updates on risks, trade-offs, and next steps\n\nRequired Skills:\n\n - 8+ years of experience in facilities operations or related roles, including direct people management and demonstrated success coaching and developing teams\n\n - Experience leading operations in a startup, high-growth, or similarly rigorous environment, with high standards for accountability and execution\n\n - Working knowledge of building systems, including HVAC, electrical, mechanical, and fire/life safety systems, with the ability to assess issues, evaluate technical recommendations, and engage the appropriate expertise\n\n - Experience with CMMS ownership and configuration, preventive maintenance program development, asset management, and vendor oversight\n\n - Demonstrated ability to navigate changing priorities, make sound decisions with incomplete information, and resolve recurring problems without compromising safety or quality\n\n - Strong written and verbal communication with frontline employees, technical partners, and executives, including the ability to tailor technical detail to the audience, create clear operational documentation, and constructively challenge assumptions\n\n - Experience supporting manufacturing, hardware development, R&D, or other technically complex facilities is preferred. Hands-on maintenance or trade experience is helpful but not required\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"7fe24e8e-365b-40bf-aad8-309fbd429e5e","title":"Process Engineering Summer 2027 Intern ","department":"Fuel Cycle","team":"Fuel Cycle","employmentType":"Intern","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-09-29T20:20:16.443+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/7fe24e8e-365b-40bf-aad8-309fbd429e5e","applyUrl":"https://jobs.ashbyhq.com/helion/7fe24e8e-365b-40bf-aad8-309fbd429e5e/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’s Fuel Cycle Team is focused on recycling gas from the machine’s vacuum system, separating unspent fuel from fusion byproducts. As an intern, you will work on these separation systems, learning the technology and related systems (vacuum, cryogenics, etc.). Your tasks will include optimizing system parameters, designing experiments, collecting and analyzing data, and modifying the test setup. At the end of the internship, you will present your findings and recommendations. This is a 12-week onsite internship at our Everett, WA office.
You Will:
Learn and operate a separation technology used in Helion’s fuel cycle, while understanding the system on a conceptual level
Adhere to safety protocols and gain hands-on experience with the system operation
Optimize specific system parameters and present a report detailing your process and results at the end of the internship
Explore and/or implement system improvements and conduct independent experiments to further enhance the technology
Required Skills:
Ability to work full time, onsite in Everett, WA for a minimum of 12 consecutive weeks during summer 2027
Currently enrolled in a Bachelor’s, Master's or PHD in Chemical Engineering, Mechanical Engineering, or Nuclear Engineering
GPA of 3.0 or above
Strong understanding of engineering principles like thermodynamics, fluids, mass transfer, heat transfer, and mechanics
Proficiency in data analysis and familiarity with software tools (MATLAB, Python, Excel)
Ability to learn how a system operates and run it independently
Basic understanding of chemistry and steady-state systems (undergraduate level)
#LI-Onsite #LI-TM1
","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’s Fuel Cycle Team is focused on recycling gas from the machine’s vacuum system, separating unspent fuel from fusion byproducts. As an intern, you will work on these separation systems, learning the technology and related systems (vacuum, cryogenics, etc.). Your tasks will include optimizing system parameters, designing experiments, collecting and analyzing data, and modifying the test setup. At the end of the internship, you will present your findings and recommendations. This is a 12-week onsite internship at our Everett, WA office.\n\nYou Will:\n\n - Learn and operate a separation technology used in Helion’s fuel cycle, while understanding the system on a conceptual level \n\n - Adhere to safety protocols and gain hands-on experience with the system operation\n\n - Optimize specific system parameters and present a report detailing your process and results at the end of the internship \n\n - Explore and/or implement system improvements and conduct independent experiments to further enhance the technology \n\nRequired Skills:\n\n - Ability to work full time, onsite in Everett, WA for a minimum of 12 consecutive weeks during summer 2027\n\n - Currently enrolled in a Bachelor’s, Master's or PHD in Chemical Engineering, Mechanical Engineering, or Nuclear Engineering\n\n - GPA of 3.0 or above \n\n - Strong understanding of engineering principles like thermodynamics, fluids, mass transfer, heat transfer, and mechanics \n\n - Proficiency in data analysis and familiarity with software tools (MATLAB, Python, Excel) \n\n - Ability to learn how a system operates and run it independently \n\n - Basic understanding of chemistry and steady-state systems (undergraduate level) \n\n#LI-Onsite #LI-TM1 "},{"id":"045d97eb-5efd-4e35-90f5-65eebe3363f4","title":"Electrical Engineering Summer 2027 Intern","department":"Electrical Engineering","team":"Electrical Engineering","employmentType":"Intern","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-09-25T22:50:06.408+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/045d97eb-5efd-4e35-90f5-65eebe3363f4","applyUrl":"https://jobs.ashbyhq.com/helion/045d97eb-5efd-4e35-90f5-65eebe3363f4/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 Helion Electrical Engineer, you will directly contribute to advancing fusion technology. In this role, you’ll design and fabricate both analog and digital electronic circuits, including op-amp, passive and active filter circuits, along with PCB design and validation. You'll also drive the development of next-generation, in-house data acquisition systems and electronic instruments to support our ongoing innovation. This internship offers hands-on experience, solving real-world engineering problems that are important to deploying fusion energy to the world.
You Will:
Perform qualification and testing plans on new or modified designs
Support senior electrical engineers in design updates and documentation
Fix hardware issues as they arise on integrated fusion generators
Learn from historical engineering approaches, design novel hardware, and test your solutions
Apply both engineering first-principles and method-based thinking to challenging problems
Learn from experts to expand your engineering skillset and domain knowledge
Required Skills:
Ability to work full time, onsite in Everett, WA for a minimum of 12 consecutive weeks during summer 2027
Currently enrolled in a Bachelor’s degree in Electrical Engineering or related field
GPA of 3.0 or above
Worked with board layout and circuit simulation tools (e.g. KiCAD, LT Spice, Altium)
Worked with designing analog and digital circuits
Experience applying engineering principles (e.g. making design trades while communicating progress and blockers)
Ability to safely work with higher voltages, such as building AC or with high voltage (1- 10 KVDC) power supplies, and familiarity with electric and magnetic fields
Base Pay:
$59 / hour
#LI-Onsite #LI-MT1
","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 Helion Electrical Engineer, you will directly contribute to advancing fusion technology. In this role, you’ll design and fabricate both analog and digital electronic circuits, including op-amp, passive and active filter circuits, along with PCB design and validation. You'll also drive the development of next-generation, in-house data acquisition systems and electronic instruments to support our ongoing innovation. This internship offers hands-on experience, solving real-world engineering problems that are important to deploying fusion energy to the world. \n\nYou Will: \n\n - Perform qualification and testing plans on new or modified designs \n\n - Support senior electrical engineers in design updates and documentation \n\n - Fix hardware issues as they arise on integrated fusion generators \n\n - Learn from historical engineering approaches, design novel hardware, and test your solutions \n\n - Apply both engineering first-principles and method-based thinking to challenging problems \n\n - Learn from experts to expand your engineering skillset and domain knowledge \n\nRequired Skills: \n\n - Ability to work full time, onsite in Everett, WA for a minimum of 12 consecutive weeks during summer 2027 \n\n - Currently enrolled in a Bachelor’s degree in Electrical Engineering or related field \n\n - GPA of 3.0 or above \n\n - Worked with board layout and circuit simulation tools (e.g. KiCAD, LT Spice, Altium) \n\n - Worked with designing analog and digital circuits \n\n - Experience applying engineering principles (e.g. making design trades while communicating progress and blockers) \n\n - Ability to safely work with higher voltages, such as building AC or with high voltage (1- 10 KVDC) power supplies, and familiarity with electric and magnetic fields \n\nBase Pay:\n\n - $59 / hour\n\n#LI-Onsite #LI-MT1 "},{"id":"4af7a4fb-3d61-48be-841a-23eb18e229bd","title":"Senior Software Engineer, Plant Control","department":"Software Engineering","team":"Software Engineering","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-09-30T21:43:49.102+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/4af7a4fb-3d61-48be-841a-23eb18e229bd","applyUrl":"https://jobs.ashbyhq.com/helion/4af7a4fb-3d61-48be-841a-23eb18e229bd/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 Software Engineer on the Plant Control team, you will 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 own 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.
You Will
Design, build, and maintain software for plant control, diagnostics, automation, and operator workflows
Own interfaces that connect distributed sensors, actuators, controllers, databases, and visualization tools
Design and 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
Architect and 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
Required Skills
Bachelor’s degree in Computer Science, Computer Engineering, Electrical Engineering, Physics, or a related technical field, or equivalent practical experience
5+ years of professional software engineering experience
Demonstrated experience of end-to-end ownership of complex software projects
Strong programming ability in a systems programming language such as C++, Rust, or similar
Experience with Python or another high-level orchestration 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
Desired Skills
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\nWhat You Will Be Doing\n\nAs a Senior Software Engineer on the Plant Control team, you will 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 own 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\nYou Will\n\n - Design, build, and maintain software for plant control, diagnostics, automation, and operator workflows\n\n - Own interfaces that connect distributed sensors, actuators, controllers, databases, and visualization tools\n\n - Design and 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 - Architect and 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\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 - 5+ years of professional software engineering experience\n\n - Demonstrated experience of end-to-end ownership of complex software projects\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 orchestration 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\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\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"56636c72-2c72-4f4f-8334-3b233a235c8d","title":"Materials Engineering Summer 2027 Intern","department":"Material Science","team":"Material Science","employmentType":"Intern","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-09-29T20:22:12.475+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/56636c72-2c72-4f4f-8334-3b233a235c8d","applyUrl":"https://jobs.ashbyhq.com/helion/56636c72-2c72-4f4f-8334-3b233a235c8d/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 materials engineering team at Helion is responsible for developing novel metals, ceramics, polymers, and composites necessary to successfully operate current and next generation nuclear fusion systems. As a Materials Engineering Intern, you'll assist in literature reviews to guide laboratory experiments and perform material characterization tests, including sample preparation, instrument operation, and data acquisition. Your work will support ongoing research and includes presenting results during weekly team meetings and at the year-end intern showcase. This role offers a unique opportunity to develop technical skills, collaborate with industry experts, and play an active part in shaping the future of clean energy. This is a 12-week onsite internship at our Everett, WA office.
You Will:
Assist in the research and development of new materials, including polymers, metals, ceramics, and composites
Conduct experiments to test the properties and performance of materials under various conditions
Analyze data from material tests and experiments to identify trends and optimize material properties
Support the characterization of materials using techniques such as microscopy, spectroscopy, and mechanical testing
Contribute to the documentation and reporting of research findings, including technical reports and presentations
Participate in cross-functional team meetings to discuss project progress and challenges
Required Skills:
Ability to work full time, onsite for a minimum of 12 consecutive weeks during summer 2027 in Everett, WA
Currently enrolled in Graduate (Master’s or PhD) degree in Materials Science, Materials Engineering, Chemical Engineering, Mechanical Engineering, Chemistry or a related field
GPA of 3.0 or above
Fundamental background in materials science principles, including material properties, thermodynamics (incl. phase diagrams), and mechanics
Experience with laboratory techniques and material characterization tools and a willingness to learn
Proficiency in data analysis and familiarity with software tools (e.g., MATLAB, Python, or Origin)
#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\nThe materials engineering team at Helion is responsible for developing novel metals, ceramics, polymers, and composites necessary to successfully operate current and next generation nuclear fusion systems. As a Materials Engineering Intern, you'll assist in literature reviews to guide laboratory experiments and perform material characterization tests, including sample preparation, instrument operation, and data acquisition. Your work will support ongoing research and includes presenting results during weekly team meetings and at the year-end intern showcase. This role offers a unique opportunity to develop technical skills, collaborate with industry experts, and play an active part in shaping the future of clean energy. This is a 12-week onsite internship at our Everett, WA office.\n\nYou Will:\n\n - Assist in the research and development of new materials, including polymers, metals, ceramics, and composites \n\n - Conduct experiments to test the properties and performance of materials under various conditions \n\n - Analyze data from material tests and experiments to identify trends and optimize material properties \n\n - Support the characterization of materials using techniques such as microscopy, spectroscopy, and mechanical testing \n\n - Contribute to the documentation and reporting of research findings, including technical reports and presentations \n\n - Participate in cross-functional team meetings to discuss project progress and challenges \n\nRequired Skills:\n\n - Ability to work full time, onsite for a minimum of 12 consecutive weeks during summer 2027 in Everett, WA \n\n - Currently enrolled in Graduate (Master’s or PhD) degree in Materials Science, Materials Engineering, Chemical Engineering, Mechanical Engineering, Chemistry or a related field \n\n - GPA of 3.0 or above \n\n - Fundamental background in materials science principles, including material properties, thermodynamics (incl. phase diagrams), and mechanics \n\n - Experience with laboratory techniques and material characterization tools and a willingness to learn \n\n - Proficiency in data analysis and familiarity with software tools (e.g., MATLAB, Python, or Origin) \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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"b73602bd-b644-4a46-9188-fded4b2db606","title":"Mechanical Engineering Summer 2027 Intern","department":" Mechanical Engineering","team":" Mechanical Engineering","employmentType":"Intern","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-09-30T17:51:31.989+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/b73602bd-b644-4a46-9188-fded4b2db606","applyUrl":"https://jobs.ashbyhq.com/helion/b73602bd-b644-4a46-9188-fded4b2db606/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 Engineering Intern at Helion you'll be at the forefront of fusion technology development. Helion internships are designed to give real ownership to help train the next generation of fusion engineers. You'll collaborate on R&D efforts, explore potential system upgrades to enhance overall performance, and contribute fresh ideas as we work on next-generation machines. This internship will require solving engineering problems critical to deploying fusion energy to the world. This is a 12-week onsite internship at our Everett, WA office.
You Will:
Own and understand designs across subsystems in fields including electromagnetics, structures, fluids, thermal, and control systems
Learn from historical engineering approaches, design novel hardware, and test your solutions
Fix hardware issues as they arise on integrated fusion generators
Apply both engineering first-principles and method-based thinking to challenging problems
Learn from experts to expand your engineering skillset and domain knowledge
Required Skills:
Ability to work full time, onsite in Everett, WA for a minimum of 12 consecutive weeks during summer 2027
Graduation date of Winter 2027 or Spring 2028
Currently enrolled in a Bachelor’s degree in Mechanical Engineering or related field
GPA of 3.0 or above
Hands-on exposure to a variety of engineering disciplines (e.g. mechanical, electrical, fluids)
Experience with 3D CAD software (e.g. NX, SolidWorks) and GD&T
#LI-Onsite #LI-KL1
","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 Mechanical Engineering Intern at Helion you'll be at the forefront of fusion technology development. Helion internships are designed to give real ownership to help train the next generation of fusion engineers. You'll collaborate on R&D efforts, explore potential system upgrades to enhance overall performance, and contribute fresh ideas as we work on next-generation machines. This internship will require solving engineering problems critical to deploying fusion energy to the world. This is a 12-week onsite internship at our Everett, WA office. \n\nYou Will: \n\n - Own and understand designs across subsystems in fields including electromagnetics, structures, fluids, thermal, and control systems\n\n - Learn from historical engineering approaches, design novel hardware, and test your solutions \n\n - Fix hardware issues as they arise on integrated fusion generators \n\n - Apply both engineering first-principles and method-based thinking to challenging problems \n\n - Learn from experts to expand your engineering skillset and domain knowledge \n\nRequired Skills: \n\n - Ability to work full time, onsite in Everett, WA for a minimum of 12 consecutive weeks during summer 2027\n\n - Graduation date of Winter 2027 or Spring 2028\n\n - Currently enrolled in a Bachelor’s degree in Mechanical Engineering or related field \n\n - GPA of 3.0 or above \n\n - Hands-on exposure to a variety of engineering disciplines (e.g. mechanical, electrical, fluids) \n\n - Experience with 3D CAD software (e.g. NX, SolidWorks) and GD&T \n\n\n\n#LI-Onsite #LI-KL1"},{"id":"fdf8229e-34e4-45f2-b97e-57d056f46a31","title":"Plasma Diagnostics Summer 2027 Intern","department":"Science","team":"Science","employmentType":"Intern","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-09-30T23:07:43.284+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/fdf8229e-34e4-45f2-b97e-57d056f46a31","applyUrl":"https://jobs.ashbyhq.com/helion/fdf8229e-34e4-45f2-b97e-57d056f46a31/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 Plasma Diagnostics Intern you will work collaboratively to conceive, design, test, and deploy optical diagnostic components and systems that help us understand the performance of our fusion machines. Non-invasive optical probes are essential to our understanding of physical parameters in the core of our plasma and allow us to fine tune the operation of the machine to achieve fusion. We deploy a suite of optical probes that measure a wide range of plasma parameters such as density, temperature, plasma shape, and many more.
You Will:
Prototype and bench test optical diagnostics, for example polarimetry or components of optical interferometers
Understand basic operations and bench test potential upgrades to performance (e.g., on polarimetry or interferometry)
Required Skills:
Ability to work full time, onsite in Everett, WA for a minimum of 12 consecutive weeks during summer 2027
Currently pursuing a bachelor’s degree or advanced degree in Physics, Aerospace Engineering, or a related field, with relevant experience in plasma science
Must be able to complete their current degree program and begin full-time employment no later than May 2028
GPA of 3.0 or above
Basic understanding of benchtop optical test and measurement
Basic proficiency with optical fiber alignment
General optical lab experience/ basic knowledge of laser and laser safety
Proficiency with analysis software such as MATLAB or Python
Optical modeling software skills such as Zemax a plus, but not necessary
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-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\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-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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"d2a1f8af-a310-44af-a5bc-c68816ebb7f6","title":"Computational Plasma Research Summer 2027 Intern","department":"Science","team":"Science","employmentType":"Intern","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-09-30T23:08:03.380+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/d2a1f8af-a310-44af-a5bc-c68816ebb7f6","applyUrl":"https://jobs.ashbyhq.com/helion/d2a1f8af-a310-44af-a5bc-c68816ebb7f6/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 computational research team at Helion works with multiple plasma simulation codes to simulate and analyze Helion’s fusion machines and test beds. The goal of the simulation effort is to develop predictive computational capabilities derived from first principles, validated against experimental data across multiple FRC merging devices, to inform next-generation fusion machine design.
You Will:
Be responsible for using Helion’s computational suite of tools to study a particular aspect of the machine, which could include FRC formation, translation, merging, or compression
Work with your team and mentor to develop a simulation study and develop a set of results
Develop a report and present your findings to the broader research team at Helion
Required Skills:
Ability to work full time, onsite in Everett, WA for a minimum of 12 consecutive weeks during summer 2027
Currently pursuing a PhD in Physics, Aerospace Engineering, or a related field, with relevant experience in plasmas
Must be able to complete their PhD program and commence full-time employment no later than May 2028
GPA of 3.0 or above
Experience working with plasma simulation codes (e.g. PIC, Vlasov codes, MHD)
Experience doing research in a team environment
Scripting and analysis in Python, C++ or MATLAB
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
Ability to support a 2nd shift schedule: 2pm to 10:30pm, Monday through Friday
#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 - Ability to support a 2nd shift schedule: 2pm to 10:30pm, Monday through Friday\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"8e3cac8f-f0ac-404f-b2d4-8f4c96103f06","title":"Second Shift Integration Technician, Bank Build","department":"Production","team":"Production","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-10-01T20:17:30.256+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/8e3cac8f-f0ac-404f-b2d4-8f4c96103f06","applyUrl":"https://jobs.ashbyhq.com/helion/8e3cac8f-f0ac-404f-b2d4-8f4c96103f06/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 an Integration Technician to support the assembly and integration of Helion’s fusion generators and subscale plasma devices. You will work hands-on with electromechanical components, support full-scale builds, and help ensure production hardware is assembled safely, accurately, and efficiently in close collaborate with Technicians and Supervisors. This is an onsite position and you will report directly to one of our Production Supervisors in our facility in Everett, WA.
You Will:
Assemble, install, and integrate electromechanical components and subsystems onto fusion generator structures and related production hardware
Support testing, troubleshooting, and rework of mechanical and electrical assemblies under the guidance of senior technicians, or supervisors
Read and follow technical drawings, work instructions, manuals, and assembly procedures
Operate common production equipment and light fabrication tools to support assembly and integration activities
Assist with the development, maintenance, and improvement of assembly fixtures, tools, and production processes
Identify and escalate assembly issues, quality concerns, or process gaps to the appropriate team members
Maintain accurate records of work performed, hardware status, and production findings
Follow safety, quality, and cleanliness standards throughout the production process
Collaborate with a cross-functional team to meet build schedules, quality targets, and production goals
Be able to squat, reach, climb, and stand for extended periods of time, and lift up to 20 lbs
Required Skills:
3–5 years of experience as a technician in a manufacturing, prototyping, or hardware assembly environment
Hands-on experience assembling, testing, or troubleshooting electromechanical components or systems
Experience using basic hand tools, power tools, and production equipment
Ability to read and interpret technical drawings, assembly procedures, and work instructions
Strong attention to detail and commitment to safety and quality standards
Ability to work collaboratively in a fast-paced production or prototype environment
Willingness to learn new systems, tools, and processes while supporting continuous improvement
Overhead crane and rigging experience
Able to support a second shift schedule 2:00pm to 10:30 pm Monday through Friday
Preferred Skills:
Welding experience
WABO certification
#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 hiring an Integration Technician to support the assembly and integration of Helion’s fusion generators and subscale plasma devices. You will work hands-on with electromechanical components, support full-scale builds, and help ensure production hardware is assembled safely, accurately, and efficiently in close collaborate with Technicians and Supervisors. This is an onsite position and you will report directly to one of our Production Supervisors in our facility in Everett, WA.\n\nYou Will:\n\n - Assemble, install, and integrate electromechanical components and subsystems onto fusion generator structures and related production hardware\n\n - Support testing, troubleshooting, and rework of mechanical and electrical assemblies under the guidance of senior technicians, or supervisors\n\n - Read and follow technical drawings, work instructions, manuals, and assembly procedures\n\n - Operate common production equipment and light fabrication tools to support assembly and integration activities\n\n - Assist with the development, maintenance, and improvement of assembly fixtures, tools, and production processes\n\n - Identify and escalate assembly issues, quality concerns, or process gaps to the appropriate team members\n\n - Maintain accurate records of work performed, hardware status, and production findings\n\n - Follow safety, quality, and cleanliness standards throughout the production process\n\n - Collaborate with a cross-functional team to meet build schedules, quality targets, and production goals\n\n - Be able to squat, reach, climb, and stand for extended periods of time, and lift up to 20 lbs\n\nRequired Skills:\n\n - 3–5 years of experience as a technician in a manufacturing, prototyping, or hardware assembly environment\n\n - Hands-on experience assembling, testing, or troubleshooting electromechanical components or systems\n\n - Experience using basic hand tools, power tools, and production equipment\n\n - Ability to read and interpret technical drawings, assembly procedures, and work instructions\n\n - Strong attention to detail and commitment to safety and quality standards\n\n - Ability to work collaboratively in a fast-paced production or prototype environment\n\n - Willingness to learn new systems, tools, and processes while supporting continuous improvement\n\n - Overhead crane and rigging experience \n\n - Able to support a second shift schedule 2:00pm to 10:30 pm Monday through Friday\n\nPreferred Skills:\n\n - Welding experience\n\n - WABO certification\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"38236e3b-4197-426f-931f-58e85eab4f32","title":"Senior Engineering Technician, Bank Build and Maintenance","department":"Production","team":"Production","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-10-01T20:20:20.921+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/38236e3b-4197-426f-931f-58e85eab4f32","applyUrl":"https://jobs.ashbyhq.com/helion/38236e3b-4197-426f-931f-58e85eab4f32/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 an Engineering Technician to develop and maintain Helion's fusion
generators and maintenance process, procedures, and tooling. You will help
develop hardware, lead full-scale builds, and coach fellow technicians on the Build
Team. You will report directly to our Build Manager at our Everett, WA campus.
You Will:
Collaborate with engineers, technicians, and managers to design, assemble, test, and troubleshoot electromechanical systems and fixtures
Design and fabricate fixtures and jigs to aid in the assembly/repair of electromechanical components
Own process development and work instruction creation for energy bank maintenance
Design, build, and perform mechanical and electrical tests on parts and assemblies
Ensure safety and quality standards are met throughout the production process
Be able to squat, reach, climb, and stand for extended periods, and lift up to 50lbs
Required Skills:
3+ years of experience as a Mechanical or Electrical Technician
Experience using light fabrication tools (power tools, mills, lathes, etc.)
Experience with CAD modeling
Read and understand technical drawings, manuals, and reports
Efficient use of Microsoft Excel, PowerPoint, Word, and Outlook for clear documentation and communication.
Bonus Skills:
Experience designing parts/fixtures in CAD software
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 an Engineering Technician to develop and maintain Helion's fusion\n\ngenerators and maintenance process, procedures, and tooling. You will help\n\ndevelop hardware, lead full-scale builds, and coach fellow technicians on the Build\n\nTeam. You will report directly to our Build Manager at our Everett, WA campus.\n\nYou Will:\n\n - Collaborate with engineers, technicians, and managers to design, assemble, test, and troubleshoot electromechanical systems and fixtures\n\n - Design and fabricate fixtures and jigs to aid in the assembly/repair of electromechanical components\n\n - Own process development and work instruction creation for energy bank maintenance\n\n - Design, build, and perform mechanical and electrical tests on parts and assemblies\n\n - Ensure safety and quality standards are met throughout the production process\n\n - Be able to squat, reach, climb, and stand for extended periods, and lift up to 50lbs\n\nRequired Skills:\n\n - 3+ years of experience as a Mechanical or Electrical Technician\n\n - Experience using light fabrication tools (power tools, mills, lathes, etc.)\n\n - Experience with CAD modeling\n\n - Read and understand technical drawings, manuals, and reports\n\n - Efficient use of Microsoft Excel, PowerPoint, Word, and Outlook for clear documentation and communication.\n\nBonus Skills:\n\n - Experience designing parts/fixtures in CAD software\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"8fec40fa-d962-4180-82e2-05e4ce845fd4","title":"LabVIEW Controls Lead","department":"Research & Development ","team":"Research & Development ","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-10-08T17:55:23.288+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/8fec40fa-d962-4180-82e2-05e4ce845fd4","applyUrl":"https://jobs.ashbyhq.com/helion/8fec40fa-d962-4180-82e2-05e4ce845fd4/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 Control Systems team within Helion’s R&D department on delivering reliable systems that enable rapid experimentation while creating a scalable foundation for increasingly complex machines. This team delivers and maintains control and data acquisition systems for high-voltage electrical test bays, plasma-technology test bays, production and manufacturing end-of-line testing, and large field-reversed configuration (FRC) plasma machines.
Your near-term focus will be strengthening and standardizing control system architectures, hardware, software, and development practices across these applications. Over time, the team’s scope may expand to include contributions to the control system for Orion, Helion’s first fusion power plant. You will report to the R&D Manager and work onsite at our Everett, WA office.
You Will:
Lead the Controls Engineering team in the timely delivery of reliable control and data acquisition systems supporting R&D operations
Set technical direction, priorities, ownership, and engineering standards across controls development, testing, deployment, configuration management, and documentation
Balance rapid delivery for near-term experimental needs with building scalable, maintainable control systems for future growth
Partner closely with scientists, engineers, machine operators, production teams, and other stakeholders to translate operational needs into effective controls solutions
Develop a high-performing engineering team through coaching, feedback, and technical rigor
Anticipate and address technical, organizational, and staffing constraints, including scaling and growing the team as needed
Required Skills:
Demonstrated ability to lead, coach, and mentor engineers, including setting clear expectations, providing actionable feedback, and building accountability
Technical proficiency with LabVIEW and NI hardware in control system applications, including PXI, cRIO, real-time systems, and FPGA
Ability to set technical direction, prioritize competing needs, and lead a team through ambiguous or rapidly changing requirements
Experience developing control and data acquisition systems for large-scale, complex hardware
Strong cross-functional communication and collaboration skills
Experience integrating PLCs with LabVIEW- and NI-based control systems
Experience integrating text-based code, such as C or MATLAB, with LabVIEW- and NI-based control systems
#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 lead the Control Systems team within Helion’s R&D department on delivering reliable systems that enable rapid experimentation while creating a scalable foundation for increasingly complex machines. This team delivers and maintains control and data acquisition systems for high-voltage electrical test bays, plasma-technology test bays, production and manufacturing end-of-line testing, and large field-reversed configuration (FRC) plasma machines.\n\nYour near-term focus will be strengthening and standardizing control system architectures, hardware, software, and development practices across these applications. Over time, the team’s scope may expand to include contributions to the control system for Orion, Helion’s first fusion power plant. You will report to the R&D Manager and work onsite at our Everett, WA office.\n\nYou Will:\n\n - Lead the Controls Engineering team in the timely delivery of reliable control and data acquisition systems supporting R&D operations\n\n - Set technical direction, priorities, ownership, and engineering standards across controls development, testing, deployment, configuration management, and documentation\n\n - Balance rapid delivery for near-term experimental needs with building scalable, maintainable control systems for future growth\n\n - Partner closely with scientists, engineers, machine operators, production teams, and other stakeholders to translate operational needs into effective controls solutions\n\n - Develop a high-performing engineering team through coaching, feedback, and technical rigor\n\n - Anticipate and address technical, organizational, and staffing constraints, including scaling and growing the team as needed\n\nRequired Skills:\n\n - Demonstrated ability to lead, coach, and mentor engineers, including setting clear expectations, providing actionable feedback, and building accountability\n\n - Technical proficiency with LabVIEW and NI hardware in control system applications, including PXI, cRIO, real-time systems, and FPGA\n\n - Ability to set technical direction, prioritize competing needs, and lead a team through ambiguous or rapidly changing requirements\n\n - Experience developing control and data acquisition systems for large-scale, complex hardware\n\n - Strong cross-functional communication and collaboration skills\n\n - Experience integrating PLCs with LabVIEW- and NI-based control systems\n\n - Experience integrating text-based code, such as C or MATLAB, with LabVIEW- and NI-based control systems\n\n\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"0acf3d81-bc5d-46df-a7d1-a998061a337e","title":"Senior Engineering Technologist","department":"Material Science","team":"Material Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-10-08T22:13:05.760+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/0acf3d81-bc5d-46df-a7d1-a998061a337e","applyUrl":"https://jobs.ashbyhq.com/helion/0acf3d81-bc5d-46df-a7d1-a998061a337e/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
#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\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\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"c1c99ec1-3297-494f-8ac4-7039192f74cc","title":"Senior Systems Administrator ","department":"Technology","team":"Technology","employmentType":"FullTime","location":"Seattle, WA","secondaryLocations":[],"publishedAt":"2026-10-07T22:59:01.947+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"Washington","addressCountry":"United States","addressLocality":"Seattle"}},"jobUrl":"https://jobs.ashbyhq.com/helion/c1c99ec1-3297-494f-8ac4-7039192f74cc","applyUrl":"https://jobs.ashbyhq.com/helion/c1c99ec1-3297-494f-8ac4-7039192f74cc/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
Be part of the team who keeps Helion's team securely connected as we build toward commercial fusion power. This is a hands-on, builder role for someone who would rather automate a problem away than ticket it twice. You'll support the identity, security, and application systems that everyone here depends on, including automation, integration, onboarding, migrations, and decommissioning.
Your week splits roughly evenly between support and project work, including both responding to real-time requests and performing planned and break-fix deployments. You'll join a small, tight-knit team, take on a meaningful share of its load, and bring the scripting depth to reduce manual work. You'll be a trusted technical partner to HR, Legal, GSOC, and business teams, with a seat at the table on access, governance, and risk, and you'll be on the front line when security events happen.
This role reports to the Manager, Identity and Access Management and Enterprise Applications and is based onsite in Seattle, WA, with one remote day per week.
You Will
Administer and support existing automation for the identity lifecycle (joiner, mover, leaver) for employees, contractors, and service accounts, using SSO, MFA, conditional access, SCIM/API-based provisioning, and PowerShell
Manage Entra ID, Active Directory, and Microsoft 365 identity services, enforcing least-privilege access and driving access reviews through remediation
Detect and respond to security events using Microsoft Sentinel, partnering with managed detection and response teams on escalations, log source tuning and remediation through to closure
Administer Microsoft 365 and Atlassian platforms, build integrations with REST APIs, webhooks, and middleware, and review new applications and AI tools for security before they enter the enterprise
Respond to end user issues and action requests captured in our Jira Service Management ticket queue that relate to identity, access, enterprise apps, and security
Produce process and procedure documentation and drive process improvement through effective analysis and collaboration with stakeholders
Required Skills
8+ years of systems administration experience spanning identity and access management, enterprise applications, and cybersecurity
Deep hands-on experience with user lifecycle management, SSO (SAML/OIDC), and SCIM provisioning in the Microsoft ecosystem; Atlassian, privileged identity management, and Purview experience a plus
Advanced PowerShell scripting, including Microsoft Graph, with Python or JavaScript for automation and API integrations
Hands-on experience with SIEM/MDR platforms, security monitoring, and incident response, plus working knowledge of PKI; audit support, AI tool governance, and networking fundamentals a plus
Self-directed communicator who balances ticket work against project deadlines without needing direction, and can support after-hours incident response when needed
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\nBe part of the team who keeps Helion's team securely connected as we build toward commercial fusion power. This is a hands-on, builder role for someone who would rather automate a problem away than ticket it twice. You'll support the identity, security, and application systems that everyone here depends on, including automation, integration, onboarding, migrations, and decommissioning.\n\nYour week splits roughly evenly between support and project work, including both responding to real-time requests and performing planned and break-fix deployments. You'll join a small, tight-knit team, take on a meaningful share of its load, and bring the scripting depth to reduce manual work. You'll be a trusted technical partner to HR, Legal, GSOC, and business teams, with a seat at the table on access, governance, and risk, and you'll be on the front line when security events happen.\n\nThis role reports to the Manager, Identity and Access Management and Enterprise Applications and is based onsite in Seattle, WA, with one remote day per week.\n\nYou Will\n\n - Administer and support existing automation for the identity lifecycle (joiner, mover, leaver) for employees, contractors, and service accounts, using SSO, MFA, conditional access, SCIM/API-based provisioning, and PowerShell\n\n - Manage Entra ID, Active Directory, and Microsoft 365 identity services, enforcing least-privilege access and driving access reviews through remediation\n\n - Detect and respond to security events using Microsoft Sentinel, partnering with managed detection and response teams on escalations, log source tuning and remediation through to closure\n\n - Administer Microsoft 365 and Atlassian platforms, build integrations with REST APIs, webhooks, and middleware, and review new applications and AI tools for security before they enter the enterprise\n\n - Respond to end user issues and action requests captured in our Jira Service Management ticket queue that relate to identity, access, enterprise apps, and security\n\n - Produce process and procedure documentation and drive process improvement through effective analysis and collaboration with stakeholders\n\nRequired Skills\n\n - 8+ years of systems administration experience spanning identity and access management, enterprise applications, and cybersecurity\n\n - Deep hands-on experience with user lifecycle management, SSO (SAML/OIDC), and SCIM provisioning in the Microsoft ecosystem; Atlassian, privileged identity management, and Purview experience a plus\n\n - Advanced PowerShell scripting, including Microsoft Graph, with Python or JavaScript for automation and API integrations\n\n - Hands-on experience with SIEM/MDR platforms, security monitoring, and incident response, plus working knowledge of PKI; audit support, AI tool governance, and networking fundamentals a plus\n\n - Self-directed communicator who balances ticket work against project deadlines without needing direction, and can support after-hours incident response when needed\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"c8049bed-0551-432a-8b81-e99e05af68bb","title":"Enterprise Applications Administrator","department":"Information Security & Technology ","team":"Information Security & Technology ","employmentType":"FullTime","location":"Seattle, WA","secondaryLocations":[],"publishedAt":"2026-10-08T18:21:19.155+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"Washington","addressCountry":"United States","addressLocality":"Seattle"}},"jobUrl":"https://jobs.ashbyhq.com/helion/c8049bed-0551-432a-8b81-e99e05af68bb","applyUrl":"https://jobs.ashbyhq.com/helion/c8049bed-0551-432a-8b81-e99e05af68bb/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 Enterprise Applications Administrator, you will play a critical role in ensuring the security, reliability, and optimization of Helion’s enterprise applications and integrations. You’ll collaborate with cross-functional teams to analyze workflows, enhance processes through technology, and ensure secure, compliant system operations. You’ll also manage cloud environments, vendor relationships, and maintain overall IT infrastructure health.
This is a hybrid role that reports directly to our Enterprise Applications Manager and is based out of our Seattle, WA office with one day remote a week.
You Will
Administer and support Jira, Confluence, and other Atlassian tools: permissions, schemes, workflows, custom fields, templates, dashboards, integrations
Manage security and compliance across business applications, including RBAC, SSO/SCIM integrations (Entra ID), audit logging, data security policies, environment strategy (dev/test/prod), and change control processes
Manage integrations and data flows between applications (via APIs, webhooks, middleware), ensuring consistency, security, and reliability
Manage the enterprise application stack: evaluate new SaaS tools, maintain vendor relationships, and manage roadmaps, contracts, upgrades, and migrations
Partner with Engineering, Operations, Product, HR, and Finance to translate business needs into system configurations, optimizations, and automations
Monitor system performance, log issues, and proactively troubleshoot application or integration failures
Support change management, releases, and onboarding/offboarding processes, and join the rotation for incident response on critical systems
Required Skills
5+ years in systems administration, systems integration, or business analysis
Hands-on expertise in integrating and automating systems through APIs and middleware
Experience with enterprise platforms such as Jira, Confluence, GitHub, NetSuite, AI platforms such as OpenAI and Anthropic, Siemens PLM, NX, CAD/CAM, HRIS, and ATS systems
Proficiency in Windows and Linux environments, PowerShell scripting, Microsoft 365, and Entra ID (Azure AD)
Strong documentation, analytical, and troubleshooting skills, with a proactive approach and the ability to prioritize multiple initiatives in a fast-paced environment
#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\nAs an Enterprise Applications Administrator, you will play a critical role in ensuring the security, reliability, and optimization of Helion’s enterprise applications and integrations. You’ll collaborate with cross-functional teams to analyze workflows, enhance processes through technology, and ensure secure, compliant system operations. You’ll also manage cloud environments, vendor relationships, and maintain overall IT infrastructure health.\n\nThis is a hybrid role that reports directly to our Enterprise Applications Manager and is based out of our Seattle, WA office with one day remote a week.\n\nYou Will\n\n - Administer and support Jira, Confluence, and other Atlassian tools: permissions, schemes, workflows, custom fields, templates, dashboards, integrations\n\n - Manage security and compliance across business applications, including RBAC, SSO/SCIM integrations (Entra ID), audit logging, data security policies, environment strategy (dev/test/prod), and change control processes\n\n - Manage integrations and data flows between applications (via APIs, webhooks, middleware), ensuring consistency, security, and reliability\n\n - Manage the enterprise application stack: evaluate new SaaS tools, maintain vendor relationships, and manage roadmaps, contracts, upgrades, and migrations\n\n - Partner with Engineering, Operations, Product, HR, and Finance to translate business needs into system configurations, optimizations, and automations\n\n - Monitor system performance, log issues, and proactively troubleshoot application or integration failures\n\n - Support change management, releases, and onboarding/offboarding processes, and join the rotation for incident response on critical systems\n\nRequired Skills\n\n - 5+ years in systems administration, systems integration, or business analysis\n\n - Hands-on expertise in integrating and automating systems through APIs and middleware\n\n - Experience with enterprise platforms such as Jira, Confluence, GitHub, NetSuite, AI platforms such as OpenAI and Anthropic, Siemens PLM, NX, CAD/CAM, HRIS, and ATS systems\n\n - Proficiency in Windows and Linux environments, PowerShell scripting, Microsoft 365, and Entra ID (Azure AD)\n\n - Strong documentation, analytical, and troubleshooting skills, with a proactive approach and the ability to prioritize multiple initiatives in a fast-paced environment\n \n \n\n#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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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":"16042b06-4aee-402a-a20d-dca78ba5864e","title":"Senior Materials Engineer, Electrical Performance","department":"Material Science","team":"Material Science","employmentType":"FullTime","location":"Everett, WA","secondaryLocations":[],"publishedAt":"2026-10-13T20:59:22.983+00:00","isListed":true,"isRemote":false,"workplaceType":"OnSite","address":{"postalAddress":{"addressRegion":"WA","addressCountry":"United States","addressLocality":"Everett"}},"jobUrl":"https://jobs.ashbyhq.com/helion/16042b06-4aee-402a-a20d-dca78ba5864e","applyUrl":"https://jobs.ashbyhq.com/helion/16042b06-4aee-402a-a20d-dca78ba5864e/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. This onsite role is based at our Everett, WA, facility and reports to the Materials Science Manager, Metals and Dielectrics.
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
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. This onsite role is based at our Everett, WA, facility and reports to the Materials Science Manager, Metals and Dielectrics.\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\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\n - 31 Days of PTO (21 vacation days and 10 sick days) \n\n - 10 Paid holidays, plus company-wide winter break \n\n - Up to 5% employer 401(k) match \n\n - Short term disability, long term disability, and life insurance \n\n - Paid parental leave and support (up to 16 weeks) \n\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"}