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 over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant.

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 thermo-mechanical hardware design efforts for Helion's fusion devices. Your role will focus on solving complex, high-impact problems that influence system performance, while also growing a high-performing engineering team. You will establish technical standards, drive execution, and shape design processes to increase the speed and quality of innovation. You will report to the Senior Manager of Mechanical Engineering and this is an onsite role located at our Everett, WA office.

You Will:

Grow and mentor a team of multidisciplinary thermo-mechanical engineers
Oversee the design, development, and optimization of thermal management strategies across the machine
Drive high-level architectural decisions on thermal processes, energy recovery, and plant design schemes
Lead validation of thermal models through subscale testing, instrumentation design, and correlation of experimental data
Drive integration of thermal subsystems within vacuum environments, cryogenic systems, and high-heat-flux components

Required Skills:

Bachelor's degree in Engineering

Mechanical Engineering Manager, Thermal

Job Description

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