Position Overview: We are seeking a highly motivated Computational Nuclear Engineer to join our team, focusing on neutronics and multiphysics simulations for stellarator fusion systems. The ideal candidate will possess a strong background in computational transport methods, with a particular emphasis on multiphysics reactor design, dose rate calculations, and radiation shielding optimization. You will work with minimal supervision, contributing to cutting-edge research and development to ensure the safety and performance of Thea Energy's stellarator systems.
Key Responsibility Areas:- Develop and implement advanced workflows for high-fidelity neutronics and related multiphysics simulations in complex 3D stellarator geometries.
- Conduct simulations of fusion blanket performance, including tritium breeding ratios (TBR), energy deposition, material activation, radiation shielding, and more.
- Collaborate with cross-disciplinary teams to perform multiphysics coupling (e.g., neutronics to thermal-hydraulics or structural analysis) to refine reactor designs.
- Perform dose rate calculations and design optimized shielding solutions for personnel and sensitive equipment.
- Prepare technical reports, presentations, and publications based on simulation results and optimization findings.
Ideal Experience & Skillsets:- PhD in Nuclear Engineering, Computational Physics, Applied Physics, or a related field with 2+ years of experience; or a Master's degree in a relevant field with 4+ years of experience.
- Strong knowledge of Monte Carlo radiation transport codes (e.g., OpenMC, MCNP, Serpent).
- Proficiency in programming languages commonly used in scientific computing, specifically Python and C++.
- Proficiency in modern scientific software development best-practices (e.g. git, GitHub, CI)
- Experience in multiphysics coupling frameworks (e.g., MOOSE, Cardinal, NekRS).
- Excellent analytical, problem-solving, and communication skills.
Preferred Skills:
- Experience with nuclear data processing and libraries (e.g., NJOY). Experience with deterministic neutron transport solvers (e.g. Atilla, OpenSN)
- Familiarity with High-Performance Computing (HPC) environments and parallel programming (MPI/OpenMP).
- Background in applying machine learning techniques to optimize nuclear simulation results or data handling.
- Understanding of fusion-specific nuclear challenges, such as first-wall material damage and tritium fuel cycle management.
Personal Attributes:
- Ability to work independently and manage projects with minimal supervision in a startup environment.
- Strong attention to detail and a passion for advancing the field of fusion energy research.
- Willingness to collaborate with a diverse team of scientists and engineers within the company and externally.
- Persistent optimism and a willingness to take on tough challenges.
- Excited to think creatively about solutions to difficult problems and not relying solely on what has been done before.
Company Benefits:- Salary range: $120,000-$180,000
- Comprehensive health benefits (e.g. medical/dental/vision)
- Employee equity stock options
- 20 days PTO
It's not necessary to meet all of the skillsets outlined above. Please feel free to send us a note and tell us why you would still be a great fit for this role or Thea Energy.
