Radiant is building the world’s first mass-produced portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1 MW failsafe microreactor that can be transported anywhere power is needed. Founded in 2020, Radiant plans to test its first reactor in 2026, with initial customer deployments beginning in 2028.

Lead Nuclear Engineer
El Segundo HQ · Posted on Feb 25, 2026

Construction Manager
Oak Ridge, TN · Posted on Feb 24, 2026

Senior Engineering Test Technician
El Segundo HQ · Posted on Feb 23, 2026

Staff Facilities Engineer
El Segundo HQ · Posted on Feb 20, 2026

Senior Facilities Engineer
El Segundo HQ · Posted on Feb 20, 2026

Lead Electrical Motor Design Engineer
El Segundo HQ · Posted on Feb 19, 2026

Senior Power Systems Engineer
El Segundo HQ · Posted on Feb 19, 2026

Senior FPGA Engineer
El Segundo HQ · Posted on Feb 18, 2026

Principal FPGA Engineer
El Segundo HQ · Posted on Feb 18, 2026

Control Systems Test Engineer
El Segundo HQ · Posted on Feb 17, 2026

Structural & Thermal Analyst, Turbomachinery
El Segundo HQ · Posted on Feb 17, 2026

Build Engineer, Turbomachinery
El Segundo HQ · Posted on Feb 17, 2026
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