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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)
Radiant
Mechanical
Lead Electrical Motor Design Engineer
El Segundo, CA$171K - $284K Full Time
2 months ago
Mechanical
2 months agoRadiant
Electrical
Principal Power Systems Engineer
El Segundo, CA$201K - $314K Full Time
2 months ago
Electrical
2 months agoRadiant
Software
Senior FPGA Engineer
El Segundo, CA$158K - $219K Full Time
2 months ago
Software
2 months agoRadiant
Software
Control Systems Engineer
El Segundo, CA$125K - $173K Full Time
2 months ago
Software
2 months agoRadiant
Aerospace Engineering
Director of Test Engineering
El Segundo, CA$141K - $237K Full Time
2 months ago
Aerospace Engineering
2 months agoRadiant
Mechanical
Senior Engineering Technician
El Segundo, CA$41 - $56/hour Full Time
2 months ago
Mechanical
2 months agoRadiant
Mechanical
Lead Test Engineer, Power Generation
El Segundo, CA$158K - $247K Full Time
2 months ago
Mechanical
2 months agoRadiant
Electrical
Senior Electrical Engineer
El Segundo, CA$158K - $219K Full Time
2 months ago
Electrical
2 months agoRadiant
Supply Chain
Enterprise Systems Implementation Specialist
El Segundo, CA$86K - $122K Full Time
2 months ago
Supply Chain
2 months agoRadiant
Mechanical
Loads & Dynamics Engineer
El Segundo, CA$107K - $146K Full Time
2 months ago
Mechanical
2 months agoRadiant
Mechanical
Mechanical Engineer, Electrical Systems
El Segundo, CA$74K - $130K Internship
2 months ago
Mechanical
2 months agoRadiant
Aerospace Engineering
Quality Systems Engineer
El Segundo, CA$115K - $168K Full Time
3 months ago
Aerospace Engineering
3 months agoRadiant
Sales & Marketing
Federal Business Development Associate
Washington, D.C.$74K - $122K Internship
3 months ago
Sales & Marketing
3 months agoRadiant
Business & Finance
FP&A Director
El Segundo, CA$123K - $236K Full Time
3 months ago
Business & Finance
3 months agoRadiant
Business & Finance
Technical Lead, Enterprise Data (Director)
El Segundo, CA$171K - $284K Full Time
4 months ago
Business & Finance
4 months agoReady to start your space career at Radiant?
