Helion Energy
Senior Multiphysics Modeling Engineer
Everett, WA · Senior
Sponsorship not specifiedDetected 220 days ago
PythonC++ANSYSMechanical DesignCOMSOL
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Entry-level history0
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Lottery odds40
Fits your clock70
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About the role
- Our vision is a world with clean, reliable, and affordable energy for everyone.
- 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.
Responsibilities
- Develop and maintain multiphysics models (primarily in MOOSE) for high-temperature ceramic and metallic components, plasma- and power-facing structures, and pulsed-load systems.
- Simulate coupled thermal, structural, and electromagnetic behavior under rapid cyclic loading, high heat flux, and large temperature gradients, and implement and calibrate constitutive models for fatigue-dominated damage, fracture, and other relevant degradation mechanisms in extreme environments.
- Apply uncertainty quantification and sensitivity analysis to support life predictions, design margins, and operating envelope definition.
- Translate modeling results into actionable design guidance for materials, joints, components, and inspection strategies.
- Run large-scale simulations in HPC environments and build reproducible, version-controlled modeling workflows.
Requirements
- PhD (or MS with significant experience) in Mechanical Engineering, Nuclear Engineering, Materials Science, Applied Physics, or related field with a computational focus.
- Proficiency with at least one advanced multiphysics platform (e.g., MOOSE, Abaqus, COMSOL, ANSYS, BISON, OpenMC, MCNP), with willingness to work in MOOSE.
- Demonstrated ability to clearly communicate model assumptions, limitations, and uncertainties to non-modelers and to work effectively with cross-functional teams.
Skills
- Demonstrated experience with verification and validation against experimental data.
- Experience running simulations in HPC environments (parallel computing, job scheduling).
- Programming/scripting skills (e.g., Python, C++).
- 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
- Annual wellness stipend
- Helion is an equal opportunity employer and value diversity at our company.
Compensation
- Our total compensation package includes benefits, including but not limited to:
Benefits
- Paid parental leave and support (up to 16 weeks)
- We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
Equal opportunity
- equal opportunity employer and value diversity at our company.
- If you need assistance or an accommodation during the interview process, please let us know.
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