TerraPower
Principal Engineer, Core Thermal Hydraulics Methods and Analysis
$143K–$186K
Bellevue, Washington, United States +1 · Principal · Full-time · Posted Aug 18, 2026
- Location
- Bellevue, Washington, United States
Bellevue, WA - Experience
- 6 years with a Bachelor’s degree, or 3 years with a Master’s degree; PhD without commercial experience may be acceptable with relevant research or expertise.
- Visa sponsorship
- Applicants who are foreign nationals (other than asylees, refugees, or lawful permanent residents) are evaluated under U.S. Government export control requirements; the company may not consider candidates from a country if timely export approval is impracticable.
About the job
Develops and applies thermal-hydraulic analysis methods for reactor cores, validates analytical codes, and supports reactor design and testing through multidisciplinary technical leadership.
What you'll do
- Develop and validate thermal-hydraulic analysis methods, including steady-state and transient analyses, benchmarking, and first-principles calculations.
- Coordinate with engineering groups and support reactor core and component testing programs.
- Lead technical problem-solving, guide engineers, and communicate findings through reports, presentations, and project planning.
What they ask for
- Bachelor’s degree with at least 6 years of related experience, or a Master’s degree with at least 3 years; a PhD without commercial experience may be acceptable with relevant research or expertise.
- Demonstrated ability to work on multidisciplinary engineering teams.
- Strong analytical and problem-solving skills, ability to manage concurrent tasks, and excellent writing and communication skills.
Nice to have
- Programming proficiency in Python or C++.
- Experience with nuclear systems or subchannel analysis codes, reactor-core subchannel analysis, low-Prandtl-number heat transfer, or high-temperature thermal-fluid systems.
Pay
$143,101.00 - $185,846.00 USD base salary
Tools
Python, C++, RELAP, SASSYS, GOTHIC, VIPRE-01
Model-written summary · the original posting is authoritative