Senior Thermal Engineer - CFD for Nuclear Microreactors

Gigascale Capital; El Segundo (CA); On-site; USD 140,000 - 225,000; Full time

Benefits offered by this job

Stock options

Comprehensive medical coverage

One Medical memberships

Vision coverage

Dental coverage

Voluntary benefits

Job summary

Radiant is seeking a Senior Thermal Engineer with CFD/thermal FEA expertise to design and implement high-fidelity simulations for the Kaleidos microreactor. You will influence reactor systems, cooling, shielding, and more in a cutting-edge, safety‑driven program.

You will work across disciplines in an interdisciplinary environment to advance milestones toward commercialization of a mass-produced nuclear reactor, reporting to the Mechanical Engineering team at our El Segundo HQ.

Qualifications

• Bachelor’s degree in engineering, physics, or 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).
• Mastery of finite element and computational fluid dynamics modeling principles and methods.
• Experience communicating and distilling information with cross-functional teams.

Responsibilities

• Own and execute thermal CFD analysis to evaluate design and performance of Kaleidos reactor systems.
• Develop and implement solutions to model turbulent flow, heat transfer, and multi-physics interactions.
• Identify and implement CFD simulation best practices.
• Build automated workflows to expand simulation capabilities, accuracy, and efficiencies.
• Collaborate across teams and disciplines to support design of reduced order analysis methods.

Skills

Cross-functional collaboration

Communication

Self-motivated

Education

Bachelor's degree in engineering/physics

Master's degree preferred

Tools

STAR-CCM+

Ansys Fluent

Siemens NX

Job description

Radiant is seeking a Senior Thermal Engineer with CFD/thermal FEA expertise to design and implement high-fidelity simulations for the Kaleidos microreactor. You will influence reactor systems, cooling, shielding, and more in a cutting-edge, safety‑driven program.

You will work across disciplines in an interdisciplinary environment to advance milestones toward commercialization of a mass-produced nuclear reactor, reporting to the Mechanical Engineering team at our El Segundo HQ.