Nuclear Engineer

About the Company

Radiant is an El Segundo, CA-based startup building the world’s first mass-produced, portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor designed to provide critical power to hospitals, data centers, and remote sites.

Responsibilities

• Lead nuclear design and analysis including shielding, neutronics, and transient analysis
• Perform operational dose and shutdown activation analysis
• Conduct criticality safety and verification and validation (V&V) of reactor models
• Analyze radiological dose consequences from accident scenarios
• Run coupled neutronics and thermal calculations to understand reactor dynamics
• Provide technical expertise and feedback to other functional engineering teams

Requirements

• Bachelor’s degree in nuclear engineering or equivalent
• 1-2+ years of nuclear engineering industry experience (MS equivalent to 2 years)
• Experience with radiation transport methods (MCNP, OpenMC, or Serpent)
• Proficiency in Python, C++, C#, FORTRAN, or another scientific computing language
• Basic knowledge of thermal hydraulic principles
• Ability to work 100% onsite in El Segundo, CA

Preferred Qualifications

• Experience with variance reduction techniques (Attila4MC, ADVANTG)
• Proficiency with nuclear software packages like MOOSE, RELAP, Pronghorn, or GRIFFIN
• Competency in high-performance computing environments
• Familiarity with CAD design software (NX, SolidWorks, or SpaceClaim)
• Experience with dose consequence software such as MAACS or NRC-RADTRAN
• Hands-on experience designing hardware or performing tests