Radiant builds Kaleidos, a portable, factory-built nuclear microreactor that delivers a megawatt of clean power anywhere it is needed. Backed by a16z, Felicis and USV.
About the role
Radiant is seeking a Senior Reactor Engineer to lead the testing and verification of critical components, mechanisms, and subsystems within the Kaleidos microreactor. You will work closely with nuclear, mechanical, thermal, controls, and test engineering teams to ensure reactor hardware meets its functional, performance, and safety requirements. Found on 1752vc Careers, the job board for startup and VC roles.
What they're looking 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
- Understanding of reactor operating principles, safety functions, and component-level performance requirements
- Experience developing technical procedures, establishing acceptance criteria, and evaluating results against engineering requirements
More about this role
Radiant is an El Segundo, CA-based startup building the world’s first mass-produced, portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be transported anywhere power is needed and run for up to 5 years without refueling. Portable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases. Radiant’s unique, practical approach to nuclear development leverages modern software engineering to rapidly deliver safe, factory-built microreactors that use existing, well-qualified materials. Founded in 2020, Radiant is on track to test its first reactor at the Idaho National Laboratory this summer, with initial customer deliveries beginning in 2028.
Radiant is seeking a Senior Reactor Engineer to lead the testing and verification of critical components, mechanisms, and subsystems within the Kaleidos microreactor. You will work closely with nuclear, mechanical, thermal, controls, and test engineering teams to ensure reactor hardware meets its functional, performance, and safety requirements.
This role...
Browse similar: Startup jobs