Helion
Senior Multiphysics Modeling Engineer
$200K–$236K
Everett, WA · On-site · Senior · Full-time · Posted Mar 11, 2026
- Experience
- 5+ years; PhD or MS with significant experience.
- Education
- PhD (or MS with significant experience) in Mechanical Engineering, Nuclear Engineering, Materials Science, Applied Physics, or related field with a computational focus.
About the job
Develops and validates coupled multiphysics models for fusion hardware, connecting simulations with experiments to guide materials, component design, and operating limits.
What you'll do
- Build and run thermal, structural, and electromagnetic models; validate them against experimental data and quantify uncertainty.
- Translate modeling results into guidance on materials, component design, life predictions, and operating limits.
- Run large-scale HPC simulations and establish reproducible modeling workflows and standards.
What they ask for
- PhD, or MS with significant experience, in a relevant field with a computational focus.
- 5+ years modeling coupled thermal–mechanical systems, including irradiated materials or materials in severely degrading environments.
- Experience with verification and validation against experimental data and simulations in HPC environments.
- Proficiency in an advanced multiphysics platform; programming or scripting skills such as Python or C++.
Pay
$200K – $236K (base salary; currency not stated)
Tools
MOOSE, Abaqus, COMSOL, ANSYS, BISON, OpenMC, MCNP, Python
Model-written summary · the original posting is authoritative