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Radiant
77 open27 filled
El Segundo, California, United StatesFounded 2019207+ employeesGrowth raisedGrowthPrivate
Last round: series d · Feb 2026(6 rounds total)
Founded by Bob Urberger, Doug Bernauer“Radiant develops a portable and zero-emissions power source that works anywhere. Its patented portable nuclear microreactor is the brainchild of former SpaceX engineers who have experience quickly bringing real products and innovations to the market. Radiant can offer a low-cost, portable renewable power source that can be an alternative to fossil fuels for both military and commercial applications.”
Backed by(41 investors)
Lockheed Martin VenturesAndreessen HorowitzBoost VCDCVCDraper AssociatesUnion Square VenturesChevron Technology VenturesFriends & Family CapitalWashington Harbour PartnersARK Venture FundIQTManhattan Venture Partners (MVP)Sahin BoydasFounders FundAlumni Ventures
Radiant is a clean energy startup building a nuclear microreactor. A climate-friendly alternative to diesel generators, Radiant's Kaleidos 1MW microreactor will be the world's first portable, zero-emissions power source that works anywhere. We plan to test our development reactor by 2026 and if successful, it will be the first new commercial reactor design to achieve a fueled test in over 50 years. Our microreactor can bring power to remote parts of the world and provide backup power for life-saving applications in hospitals or disaster-relief scenarios.
Open Positions at Radiant (77 Jobs)
FILLED
Radiant
Sales & Marketing
Senior Business Development Manager, Space
Washington, D.C. Contract
3 months ago
Sales & Marketing
3 months agoFILLED
Radiant
Supply Chain
Supplier Development Engineer
El Segundo, CA Full Time
4 months ago
Supply Chain
4 months agoFILLED
Radiant
Software
Senior Software Engineer - Simulation
El Segundo, CA Full Time
4 months ago
Software
4 months agoFILLED
Radiant
Software
Software Engineering Leader - Simulation
El Segundo, CA Full Time
5 months ago
Software
5 months agoFILLED
Radiant
Manufacturing
CNC Machinist
El Segundo, CA Full Time
5 months ago
Manufacturing
5 months agoFILLED
Radiant
Software
Software Engineering Leader - Infrastructure and Computing
El Segundo, CA Full Time
6 months ago
Software
6 months agoFILLED
Radiant
Mechanical
Mechanical Engineer - Turbomachinery
El Segundo, CA Internship
7 months ago
Mechanical
7 months agoFILLED
Radiant
Aerospace Engineering
Summer 2026 Internship - Nuclear Engineer
El Segundo, CA Internship
7 months ago
Aerospace Engineering
7 months agoFILLED
Radiant
Supply Chain
Indirect Procurement Manager
El Segundo, CA Contract
9 months ago
Supply Chain
9 months agoFILLED
Radiant
Supply Chain
Strategic Sourcing Manager
El Segundo, CA Contract
11 months ago
Supply Chain
11 months agoFILLED
Radiant
Supply Chain
Procurement Manager
El Segundo, CA Contract
11 months ago
Supply Chain
11 months agoFILLED
Radiant
Supply Chain
Supply Chain Manager
El Segundo, CA Contract
0 years ago
Supply Chain
0 years agoReady to start your space career at Radiant?
