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Helion

Full-time|On-site|Everett, WA

Join Helion as a Principal RF Electrical Engineer and play a pivotal role in designing and developing innovative RF solutions. In this exciting position, you will lead projects from conception through execution, collaborating with a talented team of engineers to deliver cutting-edge technology. Your expertise will help shape the future of wireless communicat…

Mar 2, 2026

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Principal Electrical Engineer at Helion | Everett, WA

Helion

Full-time|On-site|Everett, WA

About HelionHelion is at the forefront of fusion energy innovation, headquartered in Everett, WA, dedicated to constructing the world’s inaugural fusion power plant. Our goal is to unlock a future where clean, reliable, and affordable electricity is accessible to all.Since our inception in 2013, we've successfully secured over $1 billion in funding from esteemed investors such as Sam Altman, Mithril, Capricorn Investment Group, as well as fresh capital from SoftBank and Lightspeed. Our most recent prototype, Trenta, achieved a remarkable milestone 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-generation prototype, steering us toward the realization of the world’s first fusion power plant.This is a critical juncture to join Helion, where you will confront tangible challenges alongside a team that values urgency, rigor, accountability, and the courage to face hard truths—values essential for accomplishing unprecedented feats. Together, we will revolutionize the future of energy because the world cannot afford to wait.

Dec 19, 2025

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Electrical Engineering Manager

Helion

Full-time|On-site|Everett, WA

About HelionAt Helion, we are pioneering the future of energy as a leading fusion power company headquartered in Everett, WA. Our mission is to construct the world's first fusion power plant, paving the way for a future with limitless clean electricity. We envision a world where energy is not only clean but also reliable and 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, alongside new partners like SoftBank and Lightspeed. Our latest prototype, Trenta, achieved an impressive milestone with 10,000 high-power pulses and plasma temperatures reaching 100 million degrees Celsius (9 keV). Currently, we are advancing our next prototype, Polaris, as we strive towards realizing our vision of the first fusion power plant.Joining Helion at this critical juncture means engaging with real-world challenges while collaborating with a team that values urgency, rigorous problem-solving, ownership, and the courage to confront difficult truths. Together, we are committed to transforming the future of energy because the world cannot afford to wait.Your Role:As the Electrical Engineering Manager, you will spearhead the design and development of high-voltage circuit designs and hardware systems crucial for our fusion devices. Your leadership will be instrumental in nurturing and guiding a high-performing team of electrical engineers, fostering a culture of technical excellence, and enhancing execution speed. You will tackle intricate engineering challenges that have a direct impact on machine performance, ultimately contributing to the delivery of sustainable and affordable electricity globally. This position reports to the Senior Manager of Electrical Engineering and is based onsite at our Everett, WA office.Key Responsibilities:Lead and mentor a multidisciplinary team of electrical engineersSupervise the design of machine architecture, pulsed power circuits, grid-interfacing systems, and circuit modeling, including plasma couplingEnhance project timelines and optimize workflow within the team to expedite milestone completionDrive design, analysis, and process improvements to boost engineering productivityCollaborate extensively with Research, Mechanical, and Production teams to establish system requirements and achieve program objectives

Dec 19, 2025

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Supplier Development Engineer, Electrical

Helion Energy Inc.

Full-time|On-site|Everett, WA

About Helion Energy Inc.At Helion, we are at the forefront of the fusion energy revolution, based in Everett, WA. Our ambitious 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, reliable, and accessible to everyone.Since our inception in 2013, Helion has 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 drive our progress. Our latest prototype, Trenta, achieved 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are currently advancing with Polaris, our next prototype on the journey to realizing the first fusion power plant.Joining Helion now means becoming part of a pivotal team dedicated to solving real-world challenges. We are a collective that values urgency, rigor, ownership, and a commitment to transparency—qualities that are essential in pioneering a new era in energy. Together, we can transform the future of energy because the world cannot afford to wait.Key Responsibilities:As a Supplier Development Engineer, you will collaborate closely with suppliers to optimize the production of components for our fusion generators. Your role will involve addressing technical challenges, enhancing our suppliers’ quality systems, and facilitating Helion's transition from rapid prototyping to large-scale generator manufacturing, thus furthering our mission to deliver clean energy to the globe. This position requires you to be onsite and will report directly to the Senior Manager of Electrical Engineering at our Everett, WA facility.Your Contributions Will Include:Collaborating with design engineers to fully understand the design intent of parts, assemblies, and subsystems.Evaluating suppliers’ manufacturing processes and quality systems to source components in conjunction with the procurement team.Supporting the product ramp from new product introduction to high-volume manufacturing.Defining technical and quality specifications for suppliers based on engineering and program requirements.Implementing and overseeing the Production Part Approval Process (PPAP) with selected suppliers to promote efficient production.Ensuring suppliers comprehend submission requirements for documentation (e.g., first article inspection reports, quality documentation).Developing and approving process controls for critical characteristics.Recommending technical product enhancements to mitigate risks and minimize potential defects.Contributing to continuous improvement initiatives by identifying areas for process optimization and innovation.

Dec 19, 2025

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Senior Electrical Systems Engineer

Helion Energy

Full-time|On-site|Everett, WA

About Helion EnergyHelion Energy is at the forefront of the fusion power revolution, located in Everett, WA. Our ambitious mission is to construct the world’s first fusion power plant, paving the way for a future where clean, unlimited electricity is accessible to all. We envision a world powered by reliable, sustainable, and affordable energy.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 like SoftBank and Lightspeed, all fueling our journey 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). We are currently advancing our Polaris prototype, which is crucial in our quest for the first operational fusion power plant.Joining Helion Energy at this critical juncture means you will face significant real-world challenges alongside a team that values urgency, ownership, integrity, and transparency—qualities essential for achieving groundbreaking advancements in energy. Together, we are poised to redefine the future of power generation, as the world cannot afford to wait.Your Role:As our Senior Electrical Systems Engineer, you will play a pivotal role in bringing our next-generation fusion power systems to fruition. You will take charge of integrating electrical subsystems into a unified, dependable system, ensuring seamless functionality across power, control, and communication networks. Your responsibilities will include designing and producing electrical harnesses that interconnect our machines, managing cross-disciplinary interfaces through precise requirements and Interface Control Documents (ICDs), and collaborating directly with suppliers to facilitate the production of essential hardware. This position requires a blend of in-depth hands-on engineering skills and system-level oversight, perfectly suited for engineers who excel in both detailed and broad perspectives. You will be reporting directly to the Electrical Engineering Lead in this onsite position at our Everett, WA office.Key Responsibilities:Oversee the integration of electrical components and subsystems into comprehensive systems.Establish, uphold, and enforce system-level requirements and interface control documents (ICDs) across electrical, mechanical, and software teams.Lead the design, documentation, and validation of electrical harnesses, ensuring manufacturability, reliability, and compliance with industry standards.Collaborate with and manage harness suppliers—delivering build packages, reviewing prototypes, and qualifying production deliveries.Engage in hands-on lab work during system bring-up, troubleshooting integration issues, and validating end-to-end functionality.

Dec 19, 2025

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Senior Electrical Engineer - Hardware-in-the-Loop

Helion Energy

Full-time|On-site|Everett, WA

About Helion EnergyHelion Energy is at the forefront of the fusion power revolution. Based in Everett, WA, our mission is to create the world’s first fusion power plant, paving the way for a future where clean, limitless electricity is available to all. Our vision encompasses a world powered by reliable, sustainable energy sources, ensuring affordability for everyone.Since our inception in 2013, we have attracted over $1 billion in investments from notable figures and firms like Sam Altman, Mithril, Capricorn Investment Group, SoftBank, and Lightspeed. Our recent prototype, Trenta, has successfully completed 10,000 high-power pulses, achieving plasma temperatures of 100 million degrees Celsius (9 keV). We are currently advancing with Polaris, our next prototype, on the journey toward establishing the first-ever fusion power plant.Joining Helion now is a unique opportunity to engage with real-world challenges alongside a team that values urgency, rigor, accountability, and a commitment to transparency. These principles are critical as we strive to achieve breakthroughs in energy technology that will transform the future.

Feb 25, 2026

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Senior Manager of Electrical Engineering

Helion Energy

Full-time|On-site|Everett, WA

About Helion EnergyHelion Energy is at the forefront of the fusion power revolution, 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. Our vision encompasses a world where energy is not only clean and reliable but also affordable for all.Since our inception in 2013, we have secured over $1 billion in funding from esteemed investors including Sam Altman, Mithril, and Capricorn Investment Group, along with recent investments from SoftBank and Lightspeed. Our latest prototype, Trenta, achieved 10,000 high-power pulses, reaching plasma temperatures of 100 million degrees Celsius (9 keV). Currently, we are operating Polaris, our next prototype on the journey towards the world’s first fusion power plant.This is an exciting moment to join Helion Energy. You will address real-world challenges alongside a team that values urgency, diligence, accountability, and a commitment to transparency – values that are crucial for achieving unprecedented milestones. Together, we will reshape the future of energy, as the world cannot afford to wait.

Dec 19, 2025

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Senior Electrical Simulation Engineer

Helion

Full-time|On-site|Everett, WA

Join Helion: Pioneering Clean EnergyAt Helion, based in Everett, WA, our mission is to create the world’s first fusion power plant, revolutionizing energy production with limitless clean electricity. We envision a world where everyone has access to reliable and affordable energy.Since our inception in 2013, we have secured over $1 billion in funding from esteemed investors, including Sam Altman, Mithril, and Capricorn Investment Group, alongside new partners like SoftBank and Lightspeed. Our latest prototype, Trenta, successfully completed 10,000 high-power pulses, achieving plasma temperatures of 100 million degrees Celsius (9 keV). We are now advancing with Polaris, our next prototype on the journey to realizing the world's first fusion power facility.This is a critical moment to become part of Helion. You will confront real-world engineering challenges with a team that values urgency, rigor, accountability, and an unwavering commitment to transparency – all crucial to achieving unprecedented milestones. Together, we will reshape the future of energy, as the world cannot afford to wait.Your Role:As a Senior Electrical Simulation Engineer, you will spearhead the development and validation of intricate circuit and system models that inform design choices and ensure the safe, stable functioning of our fusion systems. You will construct plant-level models to evaluate performance, analyze subsystem interactions, and confirm adherence to relevant standards and regulations. Collaborating with interdisciplinary teams, you will model and simulate the pulsed power devices, circuits, and physics essential for fusion machine operation. By merging hands-on laboratory work with advanced simulation techniques, you will enhance our capability to accurately depict complex electrical systems with confidence, thereby ensuring the scalability of our fusion machines.Your Responsibilities Include:Leading the development and validation of electrical simulation models at both circuit and system levels.Integrating electrical models with mechanical, thermal, and control simulations to assess multidisciplinary interactions and optimize overall system performance.Creating automation scripts to facilitate repeatable, automated simulation processes.Collaborating with hardware, firmware, and software engineers to support system integration and root-cause analysis.Evaluating and implementing new simulation tools and methodologies to enhance model accuracy, efficiency, and scalability.

Dec 19, 2025

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Electrical Systems Engineer at Helion | Everett, WA

Helion

Full-time|On-site|Everett, WA

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.

Dec 19, 2025

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Senior Electrical Supplier Development Engineer

Helion Energy

Full-time|On-site|Everett, WA

About Helion EnergyHelion Energy is a pioneering fusion power company located in Everett, WA, dedicated to realizing a vision of a world where clean, reliable, and affordable energy is accessible to all. Our mission is to construct the world's first fusion power plant, heralding a future powered by limitless clean electricity.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, alongside newer partners like SoftBank and Lightspeed. Our latest prototype, Trenta, has impressively completed 10,000 high-power pulses, achieving plasma temperatures of 100 million degrees Celsius (9 keV). We are currently working on Polaris, our next prototype, as we progress toward our goal of establishing the first fusion power plant worldwide.Now is a critical moment to join our team at Helion Energy. You will engage in solving significant challenges alongside a dedicated team that values urgency, rigor, accountability, and a commitment to facing hard truths—principles essential for accomplishing unprecedented achievements in energy innovation.Your Responsibilities:We are seeking a Senior Supplier Development Engineer to collaborate closely with suppliers in the production of components for fusion generators. You will address technical challenges, enhance our suppliers' quality systems, and facilitate Helion's transition from rapid prototyping to large-scale generator manufacturing, driving our mission of delivering clean energy to the globe. This position is based on-site and reports directly to the Senior Manager of Electrical Engineering at our Everett, WA office.Work collaboratively with design engineers to thoroughly understand part, assembly, and sub-system design intents.Evaluate suppliers' manufacturing processes and quality systems to source parts, in conjunction with the procurement team.Assist in product ramping from new product introduction to high-volume manufacturing.Establish technical and quality specifications for suppliers based on engineering and program requirements.Implement and track the Production Part Approval Process (PPAP) with selected suppliers to enhance production rates.Ensure suppliers are equipped to meet documentation submission requirements (e.g., first article inspection reports, quality documentation).Develop and validate process controls for critical characteristics.Propose technical product enhancements to mitigate risks and reduce potential defect opportunities.

Dec 19, 2025

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Electrical Engineer at Helion | Everett, WA

Helion

Full-time|On-site|Everett, WA

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.

Feb 26, 2026

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Senior Electrical Engineer at Helion | Everett, WA

Helion Energy, Inc.

Full-time|On-site|Everett, WA

About Helion Energy, Inc.Helion Energy is pioneering the future of sustainable energy by developing the world’s first fusion power plant, located in Everett, WA. Our commitment is to provide clean, reliable, and affordable electricity, ensuring a brighter future for all.Since our inception in 2013, we have successfully raised over $1 billion from notable investors, including Sam Altman, Mithril, and Capricorn Investment Group, along with new contributors like 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). Currently, we are advancing our next prototype, Polaris, as we move closer to realizing our vision of a fusion power plant.Joining Helion now means becoming part of a dynamic team dedicated to solving real-world energy challenges. We uphold core values of urgency, rigor, and transparency, all crucial to achieving unprecedented breakthroughs in energy technology.Your Role:As a Senior Electrical Engineer, you will play a vital role in supporting the energy management systems that power our fusion generators. Your primary focus will be on high-power electrical systems, including energy delivery for pulsed magnetics, energy recovery systems, internal redistribution networks, and grid-tie infrastructure. This position involves designing, commissioning, and optimizing systems integral to providing clean, cost-effective electricity globally. You will be reporting directly to the Senior Manager of Electrical Engineering and will be working onsite at our Everett, WA office.Key Responsibilities:Design, test, troubleshoot, and provide support for high-voltage power systems related to pulsed magnetic coils.Oversee the design, procurement, construction, and commissioning of systems delivering pulses less than 1 ms at up to 5 MA and 40 kV.Develop comprehensive system architectures and collaborate with designers to create schematics and installation drawings.Lead design reviews to ensure cost-effective, scalable, and reliable engineering solutions.Support the commissioning and ongoing operation of generator power systems, identifying opportunities for optimizing future builds.Implement rigorous engineering practices, managing cost, schedule, and resource planning for assigned projects.Mentor junior electrical engineers while collaborating with cross-functional teams to enhance technical capabilities across Helion.

Dec 19, 2024

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Principal Materials Design Scientist

Helion

Full-time|On-site|Everett, WA

Join Helion as a Principal Materials Design Scientist, where you will spearhead cutting-edge materials research and development initiatives. Your expertise will play a critical role in advancing our innovative technologies. You will collaborate with a dynamic team of scientists and engineers to enhance material properties and performance for various applications.

Mar 6, 2026

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Principal Capacitor Engineer

Helion Energy

Full-time|On-site|Everett, WA

About HelionHelion Energy is at the forefront of fusion power technology, headquartered in Everett, WA. Our ambitious mission is to pioneer the world's first fusion power plant, thereby creating a future characterized by limitless clean electricity. We envision a world where energy is not only clean but also reliable and affordable for all.Founded in 2013, we have successfully secured over $1 billion in funding from esteemed investors, including Sam Altman, Mithril, Capricorn Investment Group, as well as new partners like SoftBank and Lightspeed, to accelerate our advancements. Our latest prototype, Trenta, 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-generation prototype, in our mission to develop the world's first fusion power plant.This is an exciting time to join Helion. You will be addressing significant global challenges alongside a passionate team that values urgency, rigor, ownership, and a dedication to transparency — principles that are crucial for achieving unprecedented energy solutions. Together, we can redefine the future of energy, as the world cannot afford to wait.

Dec 19, 2025

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Principal Fuel Cycle Engineer

Helion

Full-time|On-site|Everett, WA

Helion seeks a Principal Fuel Cycle Engineer based in Everett, WA. This position plays a key part in designing and refining fuel cycles for the company’s energy systems. The work closely aligns with Helion’s mission to advance sustainable energy technologies. Role overview This role focuses on shaping fuel cycle strategies and improving system performance. The Principal Fuel Cycle Engineer will contribute technical expertise to support the development of Helion’s energy solutions. Key responsibilities Design and optimize fuel cycles for Helion’s energy systems Collaborate with engineering teams to ensure alignment with sustainability goals Support ongoing efforts to develop advanced energy technologies Location This position is based in Everett, WA.

Apr 27, 2026

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Principal Nuclear Materials Engineer

Helion Energy Inc.

Full-time|On-site|Everett, WA

About Helion EnergyHelion Energy 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 brimming with limitless clean electricity. We envision a world where energy is clean, dependable, and accessible to all.Since our inception in 2013, we have successfully raised over $1 billion from esteemed investors such as Sam Altman, Mithril, Capricorn Investment Group, along with recent backing from SoftBank and Lightspeed. Our latest prototype, Trenta, has achieved remarkable milestones, completing 10,000 high-power pulses and reaching plasma temperatures of 100 million degrees Celsius (9 keV). Currently, we are advancing our Polaris prototype, a crucial step toward realizing our vision of the first fusion power plant.This is an exciting moment to join Helion. You will engage with pressing real-world challenges alongside a team that values urgency, precision, accountability, and a commitment to candidness—qualities that are vital to achieving unprecedented accomplishments in the energy sector. Together, we are poised to transform the future of energy, because the world cannot afford to wait.

Oct 1, 2025

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Lead Power Electronics Engineer

Helion

Full-time|On-site|Everett, WA

About HelionHelion is at the forefront of fusion power technology, headquartered in Everett, WA. Our mission is to create the world's first fusion power plant, paving the way for a future abundant in clean electricity. We envision a world where everyone has access to reliable, affordable, and clean energy.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. Our latest prototype, Trenta, 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 prototype on the journey towards the world's first fusion power plant.Joining Helion at this critical juncture means you will face real-world challenges alongside a team dedicated to urgency, rigor, and honesty—values crucial for achieving unprecedented feats. Together, we can transform the energy landscape, as the world needs solutions now more than ever.

Dec 19, 2025

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Senior Semiconductor Device Engineer

Helion

Full-time|On-site|Everett, WA

About HelionAt Helion, we are pioneering the future of energy as a leading fusion power company located in Everett, WA. Our mission is to create the world's first fusion power plant, which will provide limitless clean electricity. We envision a future where energy is clean, reliable, and affordable for everyone.Since our inception in 2013, we have successfully attracted over $1 billion from esteemed investors including Sam Altman, Mithril, and Capricorn Investment Group, alongside newcomers such as SoftBank and Lightspeed. Our latest prototype, Trenta, achieved an impressive milestone of 10,000 high-power pulses, reaching plasma temperatures of 100 million degrees Celsius (9 keV). Currently, we are advancing with Polaris, our next prototype on the journey towards realizing the world's first fusion power plant.This is an exciting time to join Helion. You will have the opportunity to address significant challenges as part of a team that values urgency, precision, accountability, and the courage to communicate hard truths—attributes crucial for accomplishing unprecedented feats. Together, we will redefine the future of energy because the world cannot afford to wait.

Dec 19, 2025

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Senior Test Engineer at Helion | Everett, WA

Helion Energy, Inc.

Full-time|On-site|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.

Dec 19, 2025

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Power Electronics Engineer at Helion | Everett, WA

Helion

Full-time|On-site|Everett, WA

Join Helion as a Power Electronics EngineerAt Helion, we are on the cutting edge of fusion power technology, based in Everett, WA. Our mission is to create the world’s first fusion power plant, driving us towards a future with sustainable, limitless clean energy. We envision a world where energy is reliable, affordable, and accessible for all.Founded in 2013, we've secured over $1 billion in funding from renowned investors, including Sam Altman, Mithril, and Capricorn Investment Group, as well as new partners like SoftBank and Lightspeed. Our latest prototype, Trenta, achieved impressive milestones, completing 10,000 high-power pulses and reaching plasma temperatures of 100 million degrees Celsius (9 keV). Currently, we are advancing with Polaris, our next prototype, on the journey to the first fusion power plant.This is a crucial moment to join our team. You’ll face real-world engineering challenges alongside a group that values urgency, rigor, ownership, and a commitment to transparency – essential qualities for achieving breakthroughs in energy technology. Together, we can redefine the future of energy, because the world can’t afford to wait.Your Role:As a Power Electronics Engineer, you will be instrumental in developing the electrical energy management systems that power our fusion generators. Your work will encompass pulsed power delivery, magnetic control, power electronics integration, low voltage controls, and precision sensing in complex environments.Key Responsibilities:High Voltage/Pulsed Power Systems:Design, test, and enhance high-voltage systems for pulsed magnetic coils (1<ms) operating at currents up to 5MA and voltages reaching 40kV. Evaluate and implement solid-state switching devices (IGBTs, MOSFETs, SCRs/thyristors) with a focus on efficiency and thermal performance.Power Electronics:Develop and integrate DC/DC, AC/DC, and DC/AC converters for energy transmission and recovery across a wide voltage range. Innovate switching-stage designs and ensure reliability in power distribution systems.

Feb 26, 2026

Senior Electrical Engineer at Helion | Everett, WA

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