Fusion Neutronics Engineer — Stellarator Modeling

Thea Energy; Kearny (NJ); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Salary range: $120,000-$180,000

Health benefits (comprehensive)

Employee equity stock options

20 days PTO

Job summary

Thea Energy in the United States is seeking a Computational Nuclear Engineer to advance neutronics and multiphysics simulations for stellarator fusion systems. You will develop workflows for high-fidelity transport analyses and collaborate across disciplines to optimize shielding and dose calculations.

PhD in Nuclear Engineering or related field with 2+ years (or Master’s with 4+ years) plus strong Python/C++ skills and experience with Monte Carlo codes and HPC is preferred.

Qualifications

• PhD in Nuclear Engineering or related field is required or 4+ years with Master’s degree.
• Strong knowledge of Monte Carlo radiation transport codes (OpenMC/MCNP/Serpent).
• Proficiency in Python and C++ programming.

Responsibilities

• Develop and implement workflows for high-fidelity neutronics and multiphysics simulations.
• Conduct simulations of fusion shielding, dose rate, and energy deposition.
• Collaborate with cross-disciplinary teams for multiphysics coupling (neutronics to thermal-hydraulics or structural analysis).
• Prepare technical reports and publications based on simulation results.

Skills

Python

C++

Git / GitHub

CI/CD

Multiphysics coupling

Scientific computing

Education

PhD in Nuclear Engineering

Master’s degree in related field

Tools

OpenMC

MCNP

Serpent

MPI

OpenMP

NJOY

Job description

Thea Energy in the United States is seeking a Computational Nuclear Engineer to advance neutronics and multiphysics simulations for stellarator fusion systems. You will develop workflows for high-fidelity transport analyses and collaborate across disciplines to optimize shielding and dose calculations.

PhD in Nuclear Engineering or related field with 2+ years (or Master’s with 4+ years) plus strong Python/C++ skills and experience with Monte Carlo codes and HPC is preferred.