Computational Plasma Scientist - MHD

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, Light Speed Venture Capital, Soft Bank, and others.

Our current prototype, Polaris, has reached record‑breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and move toward the world's first fusion power plant, Orion.

• Run Helion’s internal MHD code to simulate FRC dynamics across defined simulation conditions, from initial setup through post‑processing and analysis of results.
• Support calculations of FRC dynamics, circuit response, and magnetic loads to inform the development of Helion’s fusion generators.
• Perform simulation analysis to help interpret experimental measurements by reproducing relevant experimental conditions with Helion’s internal MHD code.
• Collaborate with and learn from experts to expand your technical skillset and domain knowledge.
• Communicate simulation results and findings with accuracy and rigor through reports, presentations, graphics, and technical discussions.

• Ph.D. in Plasma Physics, Applied Physics, Computational Physics, Nuclear Engineering, Aerospace Engineering, or a related technical field.
• Relevant experience running, analyzing, or interpreting MHD simulations in academic, national lab, or industry settings.
• Knowledge of magnetic field diffusion and eddy currents.
• Ability to understand FRC physics.
• Experience writing scripts to analyze output, parse files, and create plots in a common coding language (e.g., MATLAB, Fortran, C, Python).
• Experience supporting simulation studies, including model setup, assumptions, parameter scans, validation checks, sensitivity studies, or interpretation of results.
• Experience using computer simulation tools for circuit dynamics, fluid dynamics, transient magnetics, or plasma dynamics.

• 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 values 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.