Senior Nuclear Engineer
Job in
El Segundo, Los Angeles County, California, 90245, USA
Listed on 2026-07-01
Listing for:
Radiant
Full Time
position Listed on 2026-07-01
Job specializations:
-
Engineering
Systems Engineer, Electrical Engineering, Mechanical Engineer, Energy Engineer
Job Description & How to Apply Below
Senior Nuclear Engineer
Radiant is seeking a driven Senior Nuclear Engineer to join our team! You will own modeling methods and reactor physics calculations of neutronics parameters such as reactivity, kinetics parameters, and energy deposition distributions used within our cutting-edge custom-made Digital Twin simulation software. You'll be responsible for assessing conservatism and verifying assumptions within the modeling methods and documenting all results. Because these methods are pivotal in the safety analysis, you will play a key role in the commercialization of the first mass-produced nuclear reactor.
Responsibilities & Duties:
- Own modeling methods of core neutronics and reactor physics calculations supporting Radiant's transient safety analyses.
- Perform calculations of energy deposition distributions, reactivity coefficients, kinetics parameters, and control blade worths to input into Digital Twin models.
- Verify assumptions and assess conservatism of neutronics models.
- Document methods for both technical and non-technical audiences.
- Assist in Verification & Validation (V&V) efforts for the Digital Twin.
- Review and support other nuclear analyses across the company in reactor physics, shielding, and radiation detection.
Required
Qualifications & Skills:
- Bachelor's degree in nuclear engineering or a similar field from an accredited institution.
- 4+ years of experience with Monte Carlo nuclear engineering software such as OpenMC, MCNP, Serpent, SCALE, etc.
- Experience documenting analysis methods and assumptions.
- Strong programming skills in any language, preferably Python.
Desired
Qualifications & Skills:
- Knowledge and experience in reactor kinetics.
- Basic knowledge of thermal hydraulic principles.
- Experience communicating and distilling information with cross-functional teams.
- Driven, self-motivated, and takes ownership of work end to end.
Additional Requirements:
- Must be willing to work extended hours and weekends as necessary to accomplish our mission.
- Must work 100% onsite at El Segundo HQ.
Position Requirements
10+ Years
work experience
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