Radiant
Senior Reactor Engineer
$150K–$212K
El Segundo, CA · On-site · Senior · Full-time · Posted Oct 15, 2026
- Experience
- 5+ years of relevant experience in reactor engineering, hardware testing, design verification, or complex hardware development.
- Education
- Bachelor's degree in nuclear engineering, mechanical engineering, or a related technical discipline from an accredited institution.
- Visa sponsorship
- Any job offer is contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.
About the job
Leads testing and verification of Kaleidos microreactor hardware, using test results and engineering analysis to assess performance, support operations, and guide design improvements.
What you'll do
- Own testing from requirements definition and planning through execution, analysis, and documentation.
- Develop test procedures, instrumentation requirements, and acceptance criteria; investigate anomalies and implement corrective actions with design teams.
- Collaborate on design and test strategies, and support reactor operations, commissioning, and integrated testing.
What they ask for
- Bachelor's degree in nuclear engineering, mechanical engineering, or a related technical discipline from an accredited institution.
- 5+ years of relevant experience in reactor engineering, hardware testing, design verification, or complex hardware development.
- Demonstrated experience developing and executing component or subsystem tests, including planning, instrumentation, data analysis, and performance evaluation.
- Strong engineering fundamentals in mechanical systems, heat transfer, materials, instrumentation, and component performance.
Nice to have
- Master's degree or Ph.D. in nuclear engineering, mechanical engineering, or a related technical discipline.
- Experience with reactor components or safety-critical hardware; advanced reactor systems; reactor testing or operations; or engineering tools such as Python or MATLAB.
Pay
$150,025 – $211,838 USD base salary
Tools
Python, MATLAB
Model-written summary · the original posting is authoritative