Radiant
Senior Thermal Modeling Engineer
$140K–$225K
El Segundo, CA · On-site · Senior · Full-time · Posted Aug 7, 2026
- Experience
- 5+ years of relevant industry experience; 5+ years experience with STAR-CCM+, Ansys Fluent, or other commercial CFD code.
- Education
- Bachelor’s degree in engineering, physics, or similar field from an accredited institution.
- Visa sponsorship
- Position involves access to technology subject to U.S. export controls; any job offer is contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.
About the job
Designs and executes thermal CFD and FEA simulations for the Kaleidos microreactor to evaluate system performance, reliability, and safety.
What you'll do
- Own thermal CFD analyses and model turbulent flow, heat transfer, and multiphysics interactions.
- Establish CFD best practices and build automated simulation workflows.
- Collaborate across disciplines on design and reduced-order analysis methods.
What they ask for
- Bachelor’s degree in engineering, physics, or a similar field from an accredited institution.
- 5+ years of relevant industry experience.
- 5+ years experience with STAR-CCM+, Ansys Fluent, or other commercial CFD code.
- Proficiency with CAD software (Siemens NX) and mastery of finite element and computational fluid dynamics modeling principles and methods.
Nice to have
- Experience with radiation heat transport modeling.
- Knowledge of nuclear reactor design.
Pay
$139.5K – $224.7K USD base salary
Tools
STAR-CCM+, Ansys Fluent, Siemens NX
Model-written summary · the original posting is authoritative