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.

Integration and Test Engineer

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