Thermal Modeling Engineer - 2026 New Graduate

Responsibilities

• Develop and execute thermal analysis and CFD to evaluate design and performance of Kaleidos systems.
• Document analysis results to communicate clear and actionable outputs.
• Expand CFD capabilities, accuracy, and efficiencies via methods and workflow development projects.
• Produce analysis geometry from mechanical design CAD.
• Develop methods and calculations to support and build confidence in lower-fidelity thermal analysis methods.

Requirements

• Bachelor’s degree in engineering, physics, or similar field from an accredited institution.
• Experience with Star CCM+ or Ansys Fluent.
• Proficiency with CAD software (Siemens NX).
• Understanding of finite element and computational fluid dynamics modeling principles and methods.
• Ability to effectively communicate with cross-functional teams.

Qualifications

• Driven, self-motivated, and takes ownership of work end to end.

Benefits

• Stock: Substantial incentive stock plan for all full-time employees.
• Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.
• One Medical: Sponsored memberships for employees and their dependents.
• Vision: 100% top tier plan coverage + 50% for dependents.
• Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.
• Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits.
• 8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees.
• Daily catered lunch.
• Free snacks and drinks.
• Flexible PTO policy.
• Remote workday allocation.
• Company and team-bonding events, happy hours and in-person camaraderie.
• Beautiful El Segundo headquarters close to the Pacific Ocean.

Total Compensation And Benefits

• Radiant compensates people for impact and invests in those who continue to raise the bar.
• The best of today’s advanced reactor builders don’t wait for job postings. They join the winning team.
• If that’s you, contact us directly for immediate opportunities: recruiting@radiantnuclear.com.
• We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.
• This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.
• Career path: Senior Thermal Modeling Engineer, Principal Thermal Modeling Engineer.
• Compensation Range: $105K - $125K.