TerraPower
Principal Engineer, Nuclear Analysis
$154K–$205K
Bellevue, Washington, United States +1 · Principal · Full-time · Posted Oct 15, 2026
- Location
- Bellevue, Washington, United States
Bellevue, WA - Experience
- 7+ years of direct experience; higher education will count toward years of experience.
- Education
- B.S. or higher in Nuclear Engineering or a related discipline from an accredited university.
- Visa sponsorship
- Applicants who are foreign nationals (other than asylees, refugees, or lawful permanent residents) are evaluated under U.S. Government export control requirements. Applicants are asked to identify whether they are a U.S. Citizen or national, asylee, refugee, or lawful permanent resident; the company may not consider a foreign national from a country if timely export approval is impracticable.
About the job
Performs core design and nuclear analysis for advanced reactors, including fuel management optimization, modeling studies, and development and documentation of nuclear design solutions.
What you'll do
- Perform reactor core design and analysis, including fuel management, power distributions, reactivity coefficients, control rod worth, and shutdown margin.
- Design systems and conduct sensitivity studies of modeling assumptions; develop corrected methods when needed.
- Document analysis results and nuclear design solutions, and help maintain nuclear application software.
What they ask for
- B.S. or higher in Nuclear Engineering or a related discipline from an accredited university; higher education counts toward experience.
- 7+ years of direct experience with proven nuclear engineering skills.
- Strong MCNP experience.
- Experience in core design and analysis, including fuel management optimization, reactivity coefficients, shielding and activation, control rod worth, and uncertainty analysis.
Nice to have
- Experience with other nuclear engineering software such as DIF3D, MC2, PARTISN, RELAP, SCALE, PARCS, APA, CASMO/SIMULATE, or DRAGON.
- Professional-quality software development for nuclear applications; fast reactor experience, NQA-1 environments, and transient analysis, thermal hydraulics, or fuel performance are also desired.
Pay
$153,862 – $205,149 USD base salary
Tools
MCNP, DIF3D, MC2, PARTISN, RELAP, SCALE, PARCS, CASMO/SIMULATE
Model-written summary · the original posting is authoritative