Hardware-in-the-Loop (HIL) Engineer
2 days ago- Dept
- Software Engineering
- Location
- El Segundo, CA
- Comp
- -
Radiant is a Climate Tech company hiring now with 64 open roles. Explore Radiant jobs and careers, company profile, funding context, and where to apply. Founded 2019. Team size: 51-200. Radiant is pioneering mass-produced portable nuclear microreactors, with its flagship Kaleidos reactor delivering 1 MW of clean, zero-emission power in a shipping container-sized form factor. Valued at $1.8 billion, the company is building its factory in Oak Ridge, Tennessee.
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El Segundo, CA · Software Engineering · FullTime
El Segundo, CA · Supply Chain · FullTime
El Segundo, CA · Nuclear Engineering · FullTime
El Segundo, CA · Supply Chain · FullTime
El Segundo, CA · Nuclear Engineering · FullTime
El Segundo, CA · Nuclear Engineering · FullTime
El Segundo, CA · Supply Chain · FullTime
El Segundo, CA · Licensing & Reliability Engineering · FullTime
Company profile last updated on Jun 5, 2026.
Radiant jobs and careers: 64 open roles currently listed here. Review hiring details and apply via the official career page. Official careers page
Radiant is an climate tech company. Radiant is pioneering mass-produced portable nuclear microreactors, with its flagship Kaleidos reactor delivering 1 MW of clean, zero-emission power in a shipping container-sized form factor. Valued at $1.8 billion, the company is building its factory in Oak Ridge, Tennessee.
Open positions
64 jobs · Newest first
Candidate questions
Radiant is pioneering mass-produced portable nuclear microreactors, with its flagship Kaleidos reactor delivering 1 MW of clean, zero-emission power in a shipping container-sized form factor. Valued at $1.8 billion, the company is building its factory in Oak Ridge, Tennessee.
Yes. Radiant currently has 64 job listings on Fast AI Startup Jobs, with direct links to public or official application pages.
Radiant has raised $518M in total. The latest known stage is Series D.
Radiant reports an employee count of 51-200.
Radiant was founded in 2019.
Radiant is associated with Climate Tech, Infrastructure, Manufacturing, Defense Tech, Aerospace, IoT, and other related technologies.
Company context