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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
Senior Structural Engineer
El Segundo, CA$134K - $185K Full Time
4 months ago
Mechanical
4 months agoRadiant
MechanicalStructures
Senior Mechanical Engineer (Structures)
El Segundo, CA$134K - $185K Full Time
4 months ago
MechanicalStructures
4 months agoRadiant
MechanicalStructures
Senior Mechanical Engineer (Sheet Metal Structures)
El Segundo, CA$134K - $185K Full Time
4 months ago
MechanicalStructures
4 months agoRadiant
MechanicalStructures
Senior Structures Engineer
El Segundo, CA$134K - $185K Full Time
5 months ago
MechanicalStructures
5 months agoRadiant
Supply Chain
Business Systems Analyst
El Segundo, CA$86K - $122K Full Time
5 months ago
Supply Chain
5 months agoRadiant
Mechanical
Senior Mechanical Engineer – Turbomachinery Rotordynamics
El Segundo, CA$158K - $247K Full Time
6 months ago
Mechanical
6 months agoRadiant
Operations
Senior Technical Talent Sourcer
El Segundo, CA$115K - $168K Full Time
6 months ago
Operations
6 months agoRadiant
Manufacturing
Senior Manufacturing Engineer
El Segundo, CA$134K - $185K Full Time
6 months ago
Manufacturing
6 months agoRadiant
Electrical
Electrical Technician
El Segundo, CA$36 - $50/hour Full Time
7 months ago
Electrical
7 months agoRadiant
Manufacturing
Senior Tooling Engineer
El Segundo, CA$134K - $185K Full Time
8 months ago
Manufacturing
8 months agoRadiant
Operations
Regulatory Engineer
El Segundo, CA$86K - $122K Full Time
8 months ago
Operations
8 months agoRadiant
Software
Senior Automation and Controls Engineer
El Segundo, CA$158K - $219K Full Time
8 months ago
Software
8 months agoRadiant
Aerospace Engineering
Nuclear Engineer, Core Physics
El Segundo, CA$107K - $146K Full Time
9 months ago
Aerospace Engineering
9 months agoRadiant
Mechanical
Senior Mechanical Engineer, Fluid Systems
El Segundo, CA$140K - $225K Full Time
10 months ago
Mechanical
10 months agoRadiant
Aerospace Engineering
Senior Nuclear Engineer
El Segundo, CA$134K - $185K Full Time
10 months ago
Aerospace Engineering
10 months agoReady to start your space career at Radiant?
