Radiant
Nuclear Engineer, Core Physics
$106K–$146K
El Segundo, CA · On-site · Full-time · Posted Aug 7, 2026
- Experience
- 2+ years of reactor operations experience required; 4+ years desired.
- Education
- Bachelor’s degree in nuclear engineering or equivalent degree from an accredited institution.
- Visa sponsorship
- The position involves access to technology subject to U.S. export controls; any job offer is contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.
About the job
Designs and implements nuclear-specific testing for Radiant’s 2026 demonstration, verifying test procedures and sequences against safety requirements and objectives.
What you'll do
- Gather test requirements, objectives, and success criteria; develop procedures within Kaleidos’ operational bounds.
- Perform neutronic and transient reactor physics analyses to verify proposed testing sequences.
- Document procedures and support operator training and control-room GUI development.
What they ask for
- Bachelor’s degree in nuclear engineering or equivalent degree from an accredited institution.
- 2+ years of experience with reactor operations.
- Experience with radiation transport methods, including codes such as MCNP/OpenMC/Serpent.
- Knowledge of thermal hydraulic fundamentals.
Nice to have
- 4+ years of experience with reactor operations, or direct experience as a reactor operator of an existing nuclear reactor.
- Hands-on experience developing technical procedures, human factors engineering, or operational interface design.
Pay
$106,500 – $146,475 USD base salary
Tools
MCNP, OpenMC, Serpent
Model-written summary · the original posting is authoritative