Thermal Engineer Intern — Portable Nuclear Microreactors

Radiant; El Segundo (CA); On-site; USD 28,000 - 41,000; Part time

Job summary

Radiant in El Segundo, CA is seeking a highly motivated Thermal Engineer Intern to join the team for Summer 2027. You will perform thermal analysis and CFD on Kaleidos systems, document results, and help expand CFD capabilities in a fast-paced startup environment.

This onsite internship offers hands-on experience with a pioneering nuclear microreactor program and opportunities to develop methods supporting lower-fidelity analyses.

Qualifications

• This internship is open to BS/MS students in engineering fields.
• Ability to work independently on challenging tasks is preferred.
• Strong communication to document and convey results clearly.
• Interest in nuclear energy and rapid deployment missions.
• Prior internship experience is helpful but not required.

Responsibilities

• Develop and execute thermal analysis and CFD to evaluate Kaleidos designs.
• Document analysis results to communicate actionable outputs.
• Expand CFD capabilities and workflow efficiencies via projects.
• Own pipeline for producing analysis geometry from CAD.
• Develop methods to support lower-fidelity thermal analysis.

Skills

Independent problem solving

Proactive communication

Collaborative mindset

Adaptability

Education

BS or MS in Chemical Engineering, Mechanical Engineering, Aerospace Engineering, or related discipline

Tools

CFD software

CAD

Job description

Radiant in El Segundo, CA is seeking a highly motivated Thermal Engineer Intern to join the team for Summer 2027. You will perform thermal analysis and CFD on Kaleidos systems, document results, and help expand CFD capabilities in a fast-paced startup environment.

This onsite internship offers hands-on experience with a pioneering nuclear microreactor program and opportunities to develop methods supporting lower-fidelity analyses.