About the role#
Radiant is hiring a Thermal Engineer Intern for the Summer 2027 term. You will work on-site at our headquarters in El Segundo, California, to support the development of our portable nuclear microreactors.
What you'll do#
- Perform thermal analysis and CFD to evaluate the design and performance of Kaleidos systems.
- Manage the pipeline for creating analysis geometry from mechanical CAD designs.
- Document your findings to provide clear, actionable insights for the team.
- Improve our CFD workflows to increase accuracy and efficiency.
- Build and refine methods for lower-fidelity thermal analysis to support engineering confidence.
What you'll need#
- Current enrollment in a BS or MS program for Chemical, Mechanical, or Aerospace Engineering.
- Ability to work independently on complex engineering problems.
- A proactive approach to asking questions and finding resources to complete tasks.
- Interest in the mission to deploy nuclear microreactors.
- Familiarity with reactor physics is a plus, as is prior internship experience.
Location & details#
- This is a full-time, paid internship.
- The role is 100% on-site in El Segundo, California.
- This position involves technology subject to U.S. export controls. Offers are contingent upon your ability to comply with these regulations.
About Radiant
Radiant produces portable nuclear microreactors. The company is based in El Segundo, California and employs between 51 and 200 people. It was founded in 2020. The firm is currently developing a 1 MW failsafe microreactor known as Kaleidos.
How to get in at Radiant
Applying early to Radiant gives you a clear advantage because recruiters review applications as they arrive. Intern Insider sends an instant alert the moment a role is published, so you can apply among the first before the pile grows. You should aim to reach out to the recruiters behind these roles directly to ask about the position or a referral, as this approach often improves response rates. Intern Insider surfaces these specific contacts for you, helping you move past the standard queue.
