Senior Nuclear Engineer — Neutronics & Digital Twin Lead

Radiant; El Segundo (CA); On-site; USD 134,000 - 185,000; Full time

Benefits offered by this job

Stock options

Medical plan

One Medical

Vision plan

Dental plan

Life insurance

Paid parental leave

Lunch & snacks

Flexible PTO

Team events

Job summary

Radiant, an El Segundo, CA-based startup, seeks a Senior Nuclear Engineer to own modeling methods and reactor physics calculations for neutronics parameters used in our Digital Twin software. You will assess conservatism, verify assumptions, and document results, playing a key role in safety analysis and commercialization of the first mass-produced reactor.

The role requires a Bachelor's in nuclear engineering, 4+ years with Monte Carlo tools (OpenMC, MCNP, Serpent, SCALE), and strong Python

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, preferably Python.

Responsibilities

• 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.

Skills

Monte Carlo sims

Nuclear reactor physics

Python programming

Education

Bachelors in Nuclear Eng

Tools

OpenMC

MCNP

Serpent

SCALE

Job description

Radiant, an El Segundo, CA-based startup, seeks a Senior Nuclear Engineer to own modeling methods and reactor physics calculations for neutronics parameters used in our Digital Twin software. You will assess conservatism, verify assumptions, and document results, playing a key role in safety analysis and commercialization of the first mass-produced reactor.

The role requires a Bachelor's in nuclear engineering, 4+ years with Monte Carlo tools (OpenMC, MCNP, Serpent, SCALE), and strong Python