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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
Software
Lead DevOps Engineer
El Segundo, CA$201K - $314K Full Time
2 weeks ago
Software
2 weeks agoRadiant
Operations
IT Help Desk Associate
El Segundo, CA$30 - $35/hour Full Time
2 weeks ago
Operations
2 weeks agoRadiant
Operations
IT Operations Manager
El Segundo, CA$123K - $173K Full Time
2 weeks ago
Operations
2 weeks agoRadiant
Mechanical
Senior Electrical Engineer - PCB Design
El Segundo, CA$158K - $219K Full Time
2 weeks ago
Mechanical
2 weeks agoRadiant
Software
Senior Embedded Engineer - DSP
El Segundo, CA$158K - $219K Full Time
3 weeks ago
Software
3 weeks agoRadiant
Business & Finance
Accounts Payable Manager
El Segundo, CA$86K - $122K Contract
3 weeks ago
Business & Finance
3 weeks agoRadiant
Electrical
Senior Electrical Technician
El Segundo, CA$45 - $61 Full Time
3 weeks ago
Electrical
3 weeks agoRadiant
Technician
Harnessing Technician
El Segundo, CA$36 - $50 Full Time
3 weeks ago
Technician
3 weeks agoRadiant
Technician
Engineering Technician
El Segundo, CA$37 - $45/hour Full Time
3 weeks ago
Technician
3 weeks agoRadiant
Electrical
Engineering Manager, Electronics
El Segundo, CA$209K - $284K Full Time
1 month ago
Electrical
1 month agoRadiant
Software
Principal FPGA Engineer
El Segundo, CA$201K - $266K Full Time
1 month ago
Software
1 month agoRadiant
People & HR
Recruiting Coordinator
El Segundo, CA$74K - $122K Full Time
1 month ago
People & HR
1 month agoRadiant
Operations
Reactor Operations Engineer
El Segundo, CA$119K - $146K Full Time
1 month ago
Operations
1 month agoRadiant
People & HR
Recruiting Coordinator (Contract)
El Segundo, CA$30 - $40/hour Contract
1 month ago
People & HR
1 month agoRadiant
Entry LevelManufacturing
Manufacturing Engineer - 2026 New Graduate
El Segundo, CA$95K - $105K Internship
1 month ago
Entry LevelManufacturing
1 month agoReady to start your space career at Radiant?
