Senior Nuclear Engineer

The role

The Senior Nuclear Engineer will own modeling methods and reactor physics calculations for Digital Twin simulation software. This role involves assessing conservatism, verifying assumptions, and documenting results to support safety analysis.

What you will do

• Own modeling methods of core neutronics and reactor physics calculations supporting transient safety analyses
• Perform calculations of energy deposition distributions, reactivity coefficients, kinetics parameters, and control blade worths
• 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 in reactor physics, shielding, and radiation detection

Required qualifications

• 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
• Must work 100% onsite at El Segundo HQ

Nice to have

• Python
• 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

Benefits

• Substantial incentive stock plan for all full-time employees
• Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans
• One Medical: Sponsored memberships for employees and their dependents
• Vision: 100% top tier plan coverage + 50% for dependents
• Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents
• Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits
• 8-weeks of paid parental leave for all parents
• Additional paid pregnancy leave for CA employees
• Nuclear Engineering Certificate Program: 100% covered educational program with Penn State University for eligible employees
• Daily catered lunch
• Free snacks and drinks
• Flexible PTO policy

Before you apply

• Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls

About the company

Radiant is an El Segundo, CA-based company building the world's only mass-produced, transportable nuclear microreactors. Founded in 2020, Radiant is under contract to deliver power to the U.S. Army, Navy and Air Force.