High Voltage Test Technician

Helion · Everett, WA

Posted Sep 24, 2026 · full time

Est. total comp~$110K–$157K

Apply on Helion's site ↗

From the posting

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. …

Excerpt from Helion's public job board. Read the full posting.

Job inventory

This posting has no clear required and preferred sections in the text we have, so these are the items it names.

Named in the posting 2 items

Experience: 3+ years of experience

Skills and tools: Data acquisition

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Get ready for this role

Crew department: Processing

Skills this kind of role usually asks for:

Mass and energy balances
Process control
Materials testing
Thermal systems
Root-cause analysis

Train for it: the Processing Track: Mineral Processing, Refining and Recycling. 4 short modules, a quiz after each one and a final test. Pass it and you get the Mars Mining Certificate in Processing Fundamentals, with its own public page you can link from your resume.

Join the crew and train for this role About Processing

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I can do Mass and energy balances on the job, or have used it in a class or project I can do Process control on the job, or have used it in a class or project I can do Materials testing on the job, or have used it in a class or project I can do Thermal systems on the job, or have used it in a class or project I can do Root-cause analysis on the job, or have used it in a class or project I have a project or work sample I could show an interviewer My resume is tailored to this kind of role I've practiced answering interview questions for this kind of job

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About this listing. Pulled automatically from Helion's public job board and refreshed daily; closed roles are removed. Mars Mining Co. is not the employer, does not take applications and does not screen candidates. Field and level labels come from the job title and can be wrong.

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