Radiant
Backed by
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.
Hardware-in-the-Loop (HIL) Engineer
El Segundo, California, United States · Posted on Sep 14, 2025
Summer 2026 Internship - Nuclear Engineer
El Segundo, California, United States · Posted on Sep 8, 2025
Mechanical Engineer - 2026 New Grad (Fluid Systems, Mechanisms, or Structures)
El Segundo, California, United States · Posted on Sep 8, 2025
Summer 2026 Internship - Electrical Engineering
El Segundo, California, United States · Posted on Sep 8, 2025
Summer 2026 Internship - Materials Engineer
El Segundo, California, United States · Posted on Sep 8, 2025
Summer 2026 Internship - Mechanical Engineer (Fluid Systems, Mechanisms, or Structures)
El Segundo, California, United States · Posted on Sep 8, 2025
Summer 2026 Internship - Software Engineering
El Segundo, California, United States · Posted on Sep 8, 2025
Embedded Electrical Test Engineer
El Segundo, California, United States · Posted on Sep 8, 2025
Nuclear Engineer - 2026 New Graduate
El Segundo, California, United States · Posted on Sep 8, 2025
Electrical Engineer - 2026 New Graduate
El Segundo, California, United States · Posted on Sep 8, 2025
Materials Engineer - 2026 New Graduate
El Segundo, California, United States · Posted on Sep 8, 2025
Software Engineer - 2026 New Graduate
El Segundo, California, United States · Posted on Sep 8, 2025
Explore similar companies to Radiant
Avalanche
Micro-fusion reactors.
Torus
Modern energy storage.
Euclid
Accelerating renewable energy projects.
Antares
Nuclear microreactors.
Fever Energy
Launch modern energy services - fast.
Hades Mining
Unlocking geothermal energy at scale.
Enode
One integration, 1000+ energy devices.
Arbor Energy
Carbon-negative power.
Airloom
The next era of wind power.