Senior Test Engineer at Helion | Everett, WA

Join Helion’s Mission for Clean EnergyHelion Energy, based in Everett, WA, is pioneering the development of the world’s first fusion power plant, aimed at providing unlimited clean electricity for a sustainable future. Our vision is to create a world where energy is clean, reliable, and affordable for all.Since our inception in 2013, we have successfully raised over $1 billion from esteemed investors including Sam Altman, Mithril, Capricorn Investment Group, SoftBank, and Lightspeed, driving our innovative journey forward. Our latest prototype, Trenta, has achieved remarkable milestones with 10,000 high-power pulses and plasma temperatures reaching 100 million degrees Celsius. Currently, we are advancing with Polaris, our next prototype, which will bring us closer to realizing the first fusion power plant.This is an exciting opportunity to join Helion during a transformative period. You will confront significant challenges alongside a team that values urgency, rigor, accountability, and a commitment to transparency—attributes essential for achieving groundbreaking advancements in energy solutions. Together, we can shape the future of energy, because the world cannot afford to wait.Your Role as a Test Engineer:As a Senior Test Engineer, you will play a crucial role in designing, building, and maintaining electrical test systems that validate PCBAs, power electronics, and high-voltage assemblies integral to our fusion generators. You will collaborate closely with design engineers and technicians to ensure that our test infrastructure is robust, repeatable, and safe for hands-on execution.Your contributions will directly facilitate faster hardware iterations, enhance first-pass yield, and ensure the dependable delivery of mission-critical electrical systems that underpin Helion’s fusion generators and pulsed-power architecture. This position is hands-on, lab-based, and will report directly to the Production Manager.Your Responsibilities Include:Design and implement electrical test systems for PCBA and high-voltage assemblies, encompassing test rack architecture, fixture design, instrumentation selection, and automation support.Develop test fixture PCBAs for use in test racks, managing schematic capture, layout, review, and bring-up for functional validation of production hardware.Construct, wire, debug, and maintain complete test racks and fixtures, ensuring power distribution, safety interlocks, signal routing, and data acquisition integration are effective.Enhance data acquisition and control tools to streamline testing processes.

About HelionHelion is an innovative fusion power company located in Everett, WA, dedicated to constructing the world’s first fusion power plant to usher in a future of limitless clean energy. We envision a world powered by clean, reliable, and affordable energy accessible to all.Since our inception in 2013, we have successfully raised over $1 billion from esteemed investors including Sam Altman, Mithril, and Capricorn Investment Group, along with new partners such as SoftBank and Lightspeed, to accelerate our advancements. Our latest prototype, Trenta, has already achieved remarkable milestones with 10,000 high-power pulses and plasma temperatures soaring to 100 million degrees Celsius (9 keV). Currently, we are advancing with Polaris, our next prototype on our journey to the first fusion power plant.Now is a crucial moment to join Helion. You will engage in real-world challenges alongside a team that values urgency, precision, accountability, and a commitment to transparency — principles that are vital to accomplishing what has never been achieved before. Together, we will transform the future of energy because the world cannot afford to wait.Responsibilities:Lead the integration sequence and oversee daily assembly operations across generator subsystems, including vacuum systems, electromagnets, high-voltage capacitor systems, controls, diagnostics, and radiation safety.Develop and maintain a multidisciplinary schedule on a daily and weekly basis to ensure the full completion of builds.Define, plan, and execute integrated subsystem tests in collaboration with various subsystem owners.Conduct build completion reviews to ensure operational readiness and testing preparedness.Collaborate with production, testing, and engineering teams to enhance integration and build processes.Draft work instructions for technician teams to facilitate both standard builds and the resolution of non-conformances.Lead root cause analyses and implement corrective actions during the integration and build phases.Develop strategies for hardware upgrades, replacements, and integration improvements to maximize operational uptime.

Join Helion as a Materials EngineerHelion is at the forefront of fusion power innovation, located in Everett, WA. Our mission is to construct the first fusion power plant, paving the way for a future filled with limitless clean energy. We envision a world where energy is clean, dependable, and affordable for everyone.Since our inception in 2013, we have successfully secured over $1 billion in funding from esteemed investors including Sam Altman, Mithril, and Capricorn Investment Group, along with new partners like SoftBank and Lightspeed. Our latest prototype, Trenta, has achieved 10,000 high-power pulses and reached an impressive plasma temperature of 100 million degrees Celsius (9 keV). We are currently advancing with Polaris, our next prototype on the mission to realize the world's first fusion power plant.This is an exciting moment to become part of Helion. You will face real-world challenges alongside a team that values urgency, thoroughness, accountability, and the courage to confront difficult truths—principles crucial for accomplishing unprecedented feats. Together, we can transform the energy landscape, because the world cannot afford to wait.Your Responsibilities:As a Materials Engineer, you will oversee defined workstreams in our laboratory: designing and conducting experiments, enhancing testing setups and procedures, and translating data into actionable insights. You will collaborate closely with senior engineers and cross-functional teams to implement results into design and process enhancements, while also receiving direction on priorities and overarching strategies. This position is based onsite at our Everett, WA office, reporting to the Materials Manager.Key Responsibilities:Plan and execute materials testing campaigns.Lead investigations into failures of structural and polymer-based insulation systems and related components (including insulators, capacitor dielectrics, foils, oils, seals, and HV/electrical interfaces) as they relate to your area of work.Develop and adhere to lab protocols and checklists for your designated testing areas.Provide materials expertise for designs within your area of responsibility.Act as a valuable team member within cross-functional teams and maintain regular communication.Support and mentor lab technologists on specific testing methods and setups under your purview, while collaborating with peers to troubleshoot experiments and fixtures.

About HelionHelion is at the forefront of the fusion power revolution, headquartered in Everett, WA. Our mission is to construct the world's inaugural fusion power plant, paving the way for a future with limitless clean electricity. We envision a world where energy is clean, dependable, and affordable for all.Since our inception in 2013, Helion has successfully raised over $1 billion from esteemed investors including Sam Altman, Mithril, Capricorn Investment Group, SoftBank, and Lightspeed, driving our ambitious goals forward. Our latest prototype, Trenta, achieved an impressive 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). Currently, we are advancing with Polaris, our next prototype, on our journey towards establishing the world’s first fusion power plant.This is a critical moment to join Helion. You'll engage with real-world challenges within a team that values urgency, rigor, ownership, and a commitment to transparency—principles essential for accomplishing unprecedented feats. Together, we can transform the energy landscape, as the world cannot afford to wait.

About HelionHelion is at the forefront of the fusion power revolution, headquartered in Everett, WA. Our mission is to pioneer the world's first fusion power plant, which will facilitate a future powered by limitless clean electricity. We envision a sustainable world where energy is both reliable and accessible for all.Since our inception in 2013, we have successfully raised over $1 billion from esteemed investors, including Sam Altman, Mithril, and Capricorn Investment Group, along with new partnerships from SoftBank and Lightspeed. Our latest prototype, Trenta, achieved remarkable milestones, completing 10,000 high-power pulses and reaching plasma temperatures of 100 million degrees Celsius (9 keV). Presently, we are advancing with Polaris, our next prototype, steering us closer to the realization of the world's first fusion power plant.Joining Helion now means becoming part of a critical mission to reshape the future of energy. You will engage with a dedicated team that values urgency, accountability, and transparency – qualities essential to achieving unprecedented success. Together, we will redefine the energy landscape, as the world cannot afford to wait.

About HelionHelion is at the forefront of energy innovation, striving to create the world's first fusion power plant based in Everett, WA. Our mission is to provide limitless clean electricity, contributing to a future where energy is both reliable and affordable for all.Founded in 2013, Helion has successfully garnered over $1 billion in investments from notable investors such as Sam Altman, Mithril, and Capricorn Investment Group, along with newer partnerships from SoftBank and Lightspeed, to advance our initiatives. Our latest prototype, Trenta, has already achieved 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are currently advancing our Polaris prototype, stepping closer to realizing our vision of the first fusion power plant.Joining Helion at this critical juncture means engaging in meaningful challenges alongside a team committed to urgency, rigor, and transparency—values that are fundamental to our mission. We are dedicated to transforming the future of energy, as the world cannot afford to wait.Your Role:As a Cybersecurity Software Engineer focused on product security, you will be instrumental in ensuring that the firmware, software, and server infrastructure supporting our fusion technology are fortified against potential threats. Collaborating with firmware, software, and infrastructure engineers, you'll integrate security into all phases of the development lifecycle—reviewing designs, auditing code and dependencies, and embedding security checks within CI/CD pipelines. You will spearhead initiatives in encryption, secrets management, and secure authentication to safeguard sensitive operations. This role is perfect for a professional eager to combine extensive cybersecurity knowledge with practical engineering to protect cutting-edge energy technology. This position is based on-site and reports directly to the Lead Electrical Engineer at our Everett, WA office.Your Responsibilities:Evaluate firmware, software, and infrastructure designs to pinpoint and mitigate security vulnerabilities prior to implementation.Promote and apply security best practices across engineering including encryption, key rotation, and secure authentication methods.Deploy and oversee application security tools (e.g., Snyk, Trivy, Docker image scanners) to assess dependencies, supply chain vulnerabilities, and security risks.Define and uphold product-level security standards and practices throughout the organization.

About HelionHelion is pushing the boundaries of energy production as a pioneering fusion power company located in Everett, WA. Our mission is to create the world's first fusion power plant, ushering in an era of limitless clean electricity. We envision a future where energy is not only clean and reliable but also affordable for all.Since our inception in 2013, we have successfully secured over $1 billion in funding from esteemed investors including Sam Altman, Mithril, and Capricorn Investment Group, along with new partners such as SoftBank and Lightspeed. Our latest prototype, Trenta, achieved remarkable milestones, completing 10,000 high-power pulses and attaining plasma temperatures of 100 million degrees Celsius (9 keV). Currently, we are operating Polaris, the next step towards realizing the world’s first fusion power plant.Joining Helion at this critical juncture means confronting real-world challenges alongside a team that values urgency, rigor, ownership, and the courage to face hard truths. Together, we are committed to reshaping the future of energy; the world simply cannot wait.

Join Helion's Mission to Transform EnergyHelion is at the forefront of the fusion power revolution, located in Everett, WA. Our goal is to construct the world's first fusion power plant, paving the way for a future filled with boundless clean electricity. We envision a global landscape where energy is clean, dependable, and affordable for all.Since our inception in 2013, we have successfully raised over $1 billion from esteemed investors, including Sam Altman, Mithril, and Capricorn Investment Group, along with new partners such as SoftBank and Lightspeed. Our latest prototype, Trenta, achieved an impressive milestone of 10,000 high-power pulses while reaching plasma temperatures of 100 million degrees Celsius (9 keV). Currently, we are advancing with Polaris, our next prototype, as we strive towards the realization of the world’s first fusion power plant.This is an ideal moment to become a part of Helion. You will face real-world challenges alongside a team that values urgency, rigor, ownership, and the courage to confront hard truths. These principles are vital to achieving unprecedented success. Together, we will redefine the future of energy because time is of the essence.Your Role and Responsibilities:As a Senior Manufacturing Engineer, you will be pivotal in designing, implementing, and optimizing the production processes for our in-house capacitors. This position offers a rare chance to collaborate with various teams (Supply Chain, Production, Engineering, Test Operations), significantly impacting the commissioning timeline for Helion's inaugural power plant, and laying the foundation for our transition to mass generator manufacturing. This role is based onsite at our Everett, WA office, and you will report directly to the Senior Manager of Capacitor Manufacturing.Key Responsibilities Include:Design and implement rate-based assembly processes with collaborative support from Production and Engineering teams.Lead and oversee interdisciplinary projects aimed at enhancing the rate and throughput of the capacitor line, including aspects such as floor layout, tooling, build cells, and large-scale equipment.Assist in developing new business processes related to non-conformance management, process control, process safety, and asset maintenance to expand production capabilities and establish a robust foundation for high-volume production.Collect and analyze data (labor hours, cycle times, fallout) to identify production bottlenecks, and propose and implement effective solutions (design changes, process adjustments, equipment upgrades, automation).Spot high return-on-investment opportunities, including essential capital equipment and software capabilities that enhance manufacturing processes, in partnership with Production, Finance, Operations, and Facilities teams.Collaborate on the development of future processes while supporting and executing on existing projects.

Join Helion as an Electrical Systems EngineerAt Helion, located in Everett, WA, we are pioneering the future of energy by developing the world's first fusion power plant, aiming to provide limitless clean electricity. Our vision is to create a sustainable world with reliable and affordable energy accessible to everyone.Founded in 2013, we have successfully raised over $1 billion from renowned investors including Sam Altman, Mithril, Capricorn Investment Group, SoftBank, and Lightspeed. Our latest prototype, Trenta, completed an impressive 10,000 high-power pulses and achieved plasma temperatures of 100 million degrees Celsius. We are currently advancing our Polaris prototype, which plays a crucial role in our journey towards establishing the first fusion power plant.This is an exciting opportunity to join Helion at a transformative moment. You will be part of a dedicated team that values urgency, precision, accountability, and a commitment to transparency—principles that are vital for achieving unprecedented milestones in energy production.Your Role and Responsibilities:As the Electrical Systems Engineer, you will lead the integration of advanced electrical subsystems into our next-generation fusion machinery. Your responsibilities will include:Integrating electrical components and subsystems into cohesive systems.Defining, maintaining, and enforcing system-level requirements and interface control documents (ICDs) across interdisciplinary teams.Designing, documenting, and validating electrical harnesses to ensure manufacturability and compliance with industry standards.Collaborating with harness suppliers to manage production deliveries and prototype reviews.Engaging in hands-on work in the lab to troubleshoot integration issues and validate system functionality.

Join Helion as a Senior Mechanical EngineerAt Helion, we are pioneering the future of energy as a fusion power company based in Everett, WA. Our mission is to construct the world’s first fusion power plant, creating a path toward unlimited clean electricity. We envision a future where energy is clean, reliable, and affordable for everyone.Founded in 2013, Helion has successfully secured over $1 billion from esteemed investors, including Sam Altman, Mithril, Capricorn Investment Group, SoftBank, and Lightspeed. Our latest prototype, Trenta, has achieved remarkable milestones, including 10,000 high-power pulses and plasma temperatures of 100 million degrees Celsius (9 keV). We are currently advancing with Polaris, our next-generation prototype, on our journey to realize the first fusion power plant.This is an exciting opportunity to join our team at Helion. You will engage in solving significant engineering challenges in an environment that emphasizes urgency, rigor, accountability, and the pursuit of hard truths—values that are crucial for achieving unprecedented goals. Together, we can transform the energy landscape, as the world is counting on us.

As a Senior Multiphysics Modeling Engineer at Helion, you will be at the forefront of innovation, developing advanced modeling solutions to tackle complex engineering challenges. Your expertise in multiphysics simulations will drive the design and optimization of our cutting-edge technologies aimed at revolutionizing the energy sector.

About HelionHelion is a pioneering fusion power company located in Everett, WA, dedicated to creating the world's first fusion power plant. Our goal is to facilitate a future with limitless clean electricity, ensuring that energy is clean, reliable, and affordable for all.Founded in 2013, we have successfully raised over $1 billion from esteemed investors including Sam Altman, Mithril, and Capricorn Investment Group, as well as newer partners like SoftBank and Lightspeed. Our latest prototype, Trenta, achieved remarkable milestones with 10,000 high-power pulses and plasma temperatures soaring to 100 million degrees Celsius (9 keV). Currently, we are advancing our next prototype, Polaris, on our journey towards the first operational fusion power plant.Joining Helion at this crucial stage provides a unique opportunity to tackle significant challenges alongside a team that values urgency, rigor, accountability, and transparency—qualities essential to achieving unprecedented breakthroughs in energy. Together, we will redefine the future of energy, because time is of the essence.

Join Helion as a Senior Firmware EngineerAt Helion, we are at the forefront of fusion energy innovation, headquartered in Everett, WA. Our mission is to construct the world's first fusion power plant, paving the way for a future filled with limitless clean electricity. We envision a world where energy is clean, dependable, and affordable for all.Since our inception in 2013, we have successfully secured over $1 billion in funding from esteemed investors, including Sam Altman, Mithril, Capricorn Investment Group, SoftBank, and Lightspeed. Our latest prototype, Trenta, has achieved remarkable milestones, including 10,000 high-power pulses and plasma temperatures reaching 100 million degrees Celsius (9 keV). Currently, we are advancing with Polaris, our next prototype, as we progress towards realizing the world's first fusion power plant.This is an exciting time to become part of Helion. You will confront real-world challenges alongside a team that values urgency, diligence, accountability, and a commitment to honesty—qualities essential for achieving unprecedented breakthroughs in energy. Join us as we revolutionize the future of energy, because time is of the essence.Your Role and Responsibilities:As a Senior Firmware Engineer, you will be instrumental in developing the embedded systems that drive the control, diagnostics, and protection mechanisms of our fusion machines. Your responsibilities will include writing and maintaining firmware for thousands of distributed embedded devices that will manage and monitor tens of thousands of sensors, actuators, and data channels. This role serves as a critical junction between hardware and software, requiring close collaboration with electrical and software engineers to design robust, scalable, and high-performance control and data acquisition systems. You will be responsible for defining communication protocols, enhancing time synchronization across embedded networks, and automating hardware bring-up and testing. This position is tailored for engineers who relish working directly with hardware, debugging intricate systems, and rapidly iterating on real-world hardware to make fusion power a tangible reality. This role necessitates onsite presence, reporting directly to our Lead Electrical Engineer at our Everett, WA office.Key Responsibilities:Develop, test, and maintain firmware for real-time embedded systems used in machine control and diagnostics.Collaborate closely with hardware and software engineers to translate system requirements into embedded designs.Bring up new boards, sensors, and actuators, utilizing debugging tools such as oscilloscopes, logic analyzers, and JTAG interfaces.Implement and maintain low-level communication protocols (UART, SPI, I²C, CAN, EtherCAT, etc.).Design and refine embedded command interfaces, ensuring optimal functionality and performance.

Join Helion as a High Voltage Test TechnicianAt Helion, we are at the forefront of the fusion energy revolution, headquartered in Everett, WA. Our mission is to construct the world's first fusion power plant, paving the way for a future with boundless clean electricity. We envision a world where energy is clean, dependable, and accessible to everyone.Founded in 2013, Helion has successfully secured over $1 billion from esteemed investors including Sam Altman, Mithril, Capricorn Investment Group, and newer partners like SoftBank and Lightspeed to fuel our progress. Our latest prototype, Trenta, accomplished 10,000 high-power pulses and achieved plasma temperatures of 100 million degrees Celsius (9 keV). Currently, we are advancing with Polaris, our next prototype, as we strive towards our ambitious goal of launching the first fusion power plant.This is an exciting moment to become part of Helion's mission. You will address real-world challenges alongside a team that values urgency, precision, accountability, and the courage to deliver candid insights – all essential attributes for making history in energy innovation. Together, we aim to transform the future of energy, as the world cannot afford to wait.Your Responsibilities:Configure and execute high-voltage tests on production assemblies and prototypes.Diagnose electrical and mechanical challenges during testing and document results.Operate testing machinery, control panels, and data collection systems as per established protocols.Adhere to high-voltage safety guidelines and maintain compliance with standards for handling and grounding.Work collaboratively with Design and Test Engineers to analyze test outcomes and report any discrepancies.Assist in the repair, development, maintenance, and calibration of testing fixtures and related equipment.Accurately record and report testing data, engaging in post-test evaluations and process enhancements.Occasionally support prototype or experimental testing as needed.

About HelionHelion is at the forefront of the fusion power revolution, headquartered in Everett, WA. Our mission is to develop the world's first fusion power plant, paving the way for a future filled with limitless clean electricity. We envision a world where energy is not only clean and reliable but also affordable for all.Since our inception in 2013, Helion has secured over $1 billion in funding from prominent investors including Sam Altman, Mithril, and Capricorn Investment Group, alongside new partners like SoftBank and Lightspeed. Recently, our prototype Trenta achieved 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now advancing with Polaris, our next generation prototype, on our journey to create the first-ever fusion power plant.This is an exciting time to join Helion. You will engage in solving real-world challenges as part of a team that values urgency, rigor, accountability, and a commitment to transparency—qualities essential for accomplishing what has never been achieved before. Together, we will redefine the energy landscape, because the world cannot afford to wait.What You Will Be Doing:In this vital role, you will enhance Helion's internal communication strategies, taking charge of key storytelling initiatives and communication channels that ensure our expanding team remains aligned and motivated across all sites and shifts. You will collaborate closely with Production and Manufacturing leaders to highlight impactful stories, support team events, and craft announcements and updates. Each day will present new challenges, but your guiding principle will be to foster clarity and connection among our dedicated team of innovators. This position is onsite, reporting directly to the Internal Communications Lead at our Everett, WA office.Your Responsibilities Will Include:Designing, developing, and delivering recurring internal communications such as newsletters, team presentations, digital signage, and leadership announcements.Strategizing and facilitating high-priority internal campaigns and events, including critical topics at company-wide Town Halls.Partnering with Production and Manufacturing leaders to enhance team engagement and alignment through existing channels (e.g., Technician All Hands) and identifying new or improved methods to keep technicians connected across shifts.Overseeing intranet content and company wiki pages, collaborating with documentation owners and subject matter experts to ensure that published information remains the authoritative source.Working with IS&T and People Operations to optimize the company’s user groups (levels, teams, site locations) across communication platforms (distribution lists, Slack) to ensure appropriate messaging reaches the right audiences.

About HelionHelion is at the forefront of fusion energy technology, based in Everett, WA. Our mission is to create the world’s first fusion power plant, paving the way for a future filled with limitless clean electricity. We envision a world where energy is not only clean and reliable but also affordable for everyone.Founded in 2013, Helion has successfully secured over $1 billion in funding from esteemed investors, including Sam Altman, Mithril, and Capricorn Investment Group, along with new backers like SoftBank and Lightspeed. Our latest prototype, Trenta, has completed an impressive 10,000 high-power pulses, achieving plasma temperatures of 100 million degrees Celsius (9 keV). Currently, we are advancing with Polaris, our next prototype, on our journey towards the world’s first fusion power facility.Joining Helion at this pivotal moment means you will face exciting real-world challenges alongside a dedicated team that values urgency, rigor, ownership, and transparency—principles essential for achieving groundbreaking advancements in energy. Together, we are set to redefine the future of energy, as the world cannot afford to wait.Your Role:As a Manufacturing Engineer, you will play a critical role in designing, implementing, and optimizing the production process of in-house capacitors. This unique opportunity allows you to work collaboratively with teams across Supply Chain, Production, Engineering, and Test Operations. Your contributions will directly impact the commissioning timeline for Helion’s inaugural power plant and be instrumental in our transition to generator mass-manufacturing. This position is based onsite and reports directly to the Director of Capacitor Manufacturing at our Everett, WA facility.Key Responsibilities:Design and implement rate-based assembly processes with assistance from Production and Engineering.Lead interdisciplinary projects aimed at enhancing the rate and throughput of the capacitor production line (including floor layout, tooling, build cells, and large-scale equipment).Contribute to the development of new business processes such as non-conformance management, process control, process safety, and asset maintenance to support production growth and establish a foundation for high-volume manufacturing.Analyze data (labor hours, cycle times, and fallout) to identify production bottlenecks and propose solutions (design changes, process modifications, equipment upgrades, and automation).Identify high-return capabilities, including capital equipment and software enhancements that improve manufacturing processes, collaborating with Production, Finance, Operations, and Facilities teams.Work in collaboration on the development of future processes while simultaneously supporting and enabling higher output on current manufacturing lines.

About HelionHelion is a pioneering fusion power company located in Everett, WA, dedicated to constructing the world's first fusion power plant. Our mission is to provide unlimited clean electricity, paving the way for a sustainable and affordable energy future for all.Since our inception in 2013, we have successfully secured over $1 billion in funding from prominent investors such as Sam Altman, Mithril, Capricorn Investment Group, SoftBank, and Lightspeed. Our latest prototype, Trenta, has achieved remarkable milestones, including 10,000 high-power pulses and plasma temperatures reaching 100 million degrees Celsius (9 keV). Currently, we are advancing with Polaris, our next prototype, as we progress toward realizing the world’s first fusion power plant.Joining Helion at this transformative time means taking on significant real-world challenges alongside a team that values urgency, rigor, accountability, and a commitment to transparency. Together, we are poised to redefine the future of energy, because the world cannot afford to wait.

Join Our Mission at HelionHelion is at the forefront of innovation, striving to create the world’s first fusion power plant based in Everett, WA. Our goal is to provide limitless clean energy to the world, ensuring a sustainable and affordable energy future for all.Since our establishment in 2013, we have attracted over $1 billion in funding from renowned investors like Sam Altman, Mithril, and Capricorn Investment Group, alongside new partnerships with SoftBank and Lightspeed. Our latest prototype, Trenta, has achieved remarkable milestones, including 10,000 high-power pulses and plasma temperatures of 100 million degrees Celsius (9 keV). Currently, we are advancing with Polaris, our next-generation prototype, as we move closer to realizing our vision.This is an exciting time to become part of Helion’s team. You will face significant challenges alongside a group that values urgency, precision, accountability, and the courage to confront difficult truths—qualities that are essential to achieving unprecedented breakthroughs in energy. Together, we can redefine the future of energy, because the world cannot afford to wait.Your Role:As a Senior Power Electronics Engineer, you will play a crucial role in designing, developing, and optimizing the core energy management systems for Helion’s fusion generators. Your responsibilities will encompass high-voltage pulsed power delivery, energy recovery, redistribution networks, and AC grid integration. You will drive design excellence, mentor fellow engineers, and directly contribute to solving one of the most significant energy challenges of our time. This position is on-site, reporting to the Senior Manager of Electrical Engineering in our Everett, WA office.Key Responsibilities:Design, test, and troubleshoot high-voltage power systems for pulsed magnetic coils.Oversee procurement, construction, and commissioning of electrical systems delivering Develop system architecture and collaborate on schematics and installation drawings.Lead design reviews, ensuring cost-effective, scalable, and reliable solutions are implemented.Support generator commissioning and operations to enhance future builds.Own engineering rigor—including cost, schedule, and resource estimates—for your scope of work.Mentor teammates and foster technical growth within electrical and cross-functional teams.

About Helion EnergyHelion Energy is a pioneering company in the field of fusion power, headquartered in Everett, WA. Our mission is to create the world's first fusion power plant, aiming to provide a future enriched with unlimited clean electricity. We envision a world where energy is clean, reliable, and affordable for all.Since our inception in 2013, we have successfully raised over $1 billion from esteemed investors including Sam Altman, Mithril, and Capricorn Investment Group, alongside new partners like SoftBank and Lightspeed, to drive our innovative projects forward. Our latest prototype, Trenta, has achieved remarkable milestones, including 10,000 high-power pulses and plasma temperatures soaring to 100 million degrees Celsius (9 keV). Currently, we are progressing with Polaris, our next prototype, on the journey towards the world's inaugural fusion power plant.Now is an exciting time to join Helion! You will face real-world challenges alongside a team that values urgency, rigor, accountability, and honesty—principles integral to accomplishing groundbreaking achievements in energy. Together, we can reshape the future of energy, as the world cannot afford to wait.

About HelionHelion Energy, based in Everett, WA, is at the forefront of the fusion power revolution, dedicated to developing the world's first fusion power plant. Our mission is to create an environment where clean, reliable, and affordable energy is accessible to all.Since our inception in 2013, we have successfully attracted over $1 billion from visionary investors including Sam Altman, Mithril, and Capricorn Investment Group, along with recent contributions from SoftBank and Lightspeed. Our latest prototype, Trenta, has achieved remarkable milestones with 10,000 high-power pulses and plasma temperatures reaching 100 million degrees Celsius. Currently, we are advancing our next prototype, Polaris, on the path to realizing our groundbreaking energy vision.This is an exciting opportunity to join Helion during a transformative phase. You will engage in tackling significant challenges alongside a team that champions urgency, rigor, ownership, and a commitment to transparency—principles critical to achieving unprecedented advancements in energy. Together, we can shape the future of energy, as the world cannot afford to wait.