Nuclear Methods Engineer

If you think of computers as the universe at your fingertips rather than a burden, and reactor physics gets you genuinely excited, we want to talk. Join a team building the methods and software behind a next-generation fast reactor.

What This Role Offers

Location: Bellevue, WA

Remote, Full-Time, 12-month contract – high likelihood of extension based on performance/job needs

Schedule: Monday-Friday

Salary Range: $52-$85/hour

Benefits: Healthcare (Medical, Dental, Vision), PTO, Some Paid Holidays, and Unmatched 401k

Responsibilities

• Create formal documentation of nuclear methods software requirements, design, and testing to support reactor licensing

• Update, improve, or create software to satisfy licensing requirements through the V&V process

• Incorporate third-party simulation tools into the design software ecosystem

• Design and execute sensitivity studies on modeling assumptions (meshing, physics coupling, cross sections, kinetics)

• Train and support reactor designers in use of the design software suite

• Build and apply methods to assess uncertainty propagation and safety margin impacts

• Improve the team’s ability to build models and draw conclusions through tooling, visualization, and reporting

Qualifications

• B.S. in Nuclear Engineering with 5-20 years of experience (or equivalent M.S./Ph.D. experience bands)

• Fast reactor physics and design intuition

• Experience with nuclear design/analysis methodologies: criticality, flux/power distributions, fuel management, reactivity coefficients, shielding, kinetics

• Strong “under-the-hood” knowledge of deterministic and stochastic particle transport, depletion, and perturbation theory

• Experience with reactor physics codes such as DIF3D, MC2, PARTISN, MCNP, Serpent, SCALE, PARCS, CASMO, or DRAGON preferred

• Strong programming skills required; Python, C++, or Fortran a bonus

• Strong technical documentation skills required

Thomas-Thor provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws.