Radiant
Lead Nuclear Engineer
$161K–$224K
El Segundo, CA · On-site · Full-time · Posted Sep 11, 2026
- Experience
- 5+ years of relevant nuclear engineering experience and 1+ year managing direct reports.
- Education
- Bachelor’s degree in nuclear engineering or a related technical discipline from an accredited institution.
- Visa sponsorship
- Any job offer is contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.
About the job
Leads the nuclear design and analysis team for Radiant’s Kaleidos microreactor, guiding technical work, project execution, and engineering staff from design through testing and regulatory documentation.
What you'll do
- Lead and develop an interdisciplinary nuclear engineering team; set priorities, plans, schedules, and resource needs.
- Own nuclear engineering projects and analyses, translating results into design decisions and technical requirements.
- Coordinate with engineering, testing, operations, safety, and regulatory teams; support verification, testing, and regulatory documentation.
What they ask for
- Bachelor’s degree in nuclear engineering or a related technical discipline from an accredited institution.
- 5+ years of relevant nuclear engineering experience; 1+ year managing direct reports.
- Demonstrated leadership of complex, multidisciplinary nuclear engineering projects.
- Deep knowledge of neutron transport theory, Monte Carlo methods, nuclear data, and statistical convergence; professional experience with MCNP, OpenMC, or comparable transport models.
Nice to have
- Master’s degree or Ph.D. in nuclear engineering or a related technical discipline; relevant subject-matter expertise.
- Experience with advanced reactors or microreactors, nuclear analysis tools such as SCALE or Serpent, simulation programming, multiphysics analysis, regulatory work, or reactor testing.
Pay
$161,288 – $223,650 USD base salary
Tools
MCNP, OpenMC, SCALE, Serpent, Shift, Griffin, MOOSE, Python
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