Fusion Neutronics & Multiphysics Simulation Engineer

Thea Energy Inc.; Kearny (NJ); Hybrid; USD 120,000 - 180,000; Full time

Benefits offered by this job

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

Comprehensive health benefits

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 work with minimal supervision on cutting-edge research to ensure safety and performance of Thea Energy’s stellarator designs.

Ideal candidates hold a PhD or MS with several years of experience in Monte Carlo transport codes, Python and C++, and multiphysics coupling frameworks.

Qualifications

• PhD or MS with extensive experience in neutronics, multiphysics simulations, and stellarator design.
• Strong background in Monte Carlo radiation transport methods and reactor design.
• Proficiency in Python and C++, with experience in scientific software development practices (Git, GitHub, CI).

Responsibilities

• Develop high-fidelity neutronics and multiphysics simulations in 3D stellarator geometries.
• Simulate fusion blanket performance, including TBR, energy deposition, activation, and shielding.
• Collaborate to couple neutronics with thermal-hydraulics or structural analysis.
• Perform dose rate calculations and optimize shielding for personnel and equipment.
• Prepare technical reports and publications based on simulation results.

Skills

Python

C++

Monte Carlo codes

OpenMC

MCNP

Serpent

Git/GitHub/CI

MPI/OpenMP

MOOSE/CARDINAL/NekRS

multiphysics coupling

high-performance computing

Education

PhD in Nuclear Engineering or related field

MS in Nuclear/Computational Physics or related field with 4+ years experience

Tools

NJOY

MOOSE

Cardinal

NekRS

OpenMC

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 work with minimal supervision on cutting-edge research to ensure safety and performance of Thea Energy’s stellarator designs.

Ideal candidates hold a PhD or MS with several years of experience in Monte Carlo transport codes, Python and C++, and multiphysics coupling frameworks.