Thermal-Hydraulic Software Analysis Engineer

Company: System One
Location: Bellevue
Posted on: June 3, 2025

Job Description:

Job Title: Thermal-Hydraulic Software Analysis Engineer

Please make an application promptly if you are a good match for this role due to high levels of interest.
Location: Bellevue, WA

Type: Contract
Compensation: $72 - $90 hourly
Contractor Work Model: hybrid (local to Bellevue, WA), or remote



System One is hiring a Thermal Hydraulic Software Analysis Engineer for a long-term hybrid (local to Bellevue, WA), or remote role to support the computational thermal-hydraulic analysis of the reactor core for our client's sodium-cooled reactor program. You will be reporting to the Manager of Core Thermal Hydraulics Methods & Analysis for System Thermal Hydraulics and will refine core assembly designs and evaluate their thermal-hydraulic behavior under various conditions in advanced nuclear reactor systems.

Tasks Perform thermal hydraulic analysis and engineering calculation/assessment of nuclear reactor core components and structures in exploration of reactor architecture options including component selections, configurations, and sizing in support of the design of our client's demonstration reactor system using in-house thermal-hydraulic software, computational fluid dynamic software, and hand calculations
Work with cross-disciplinary teams to analyze the thermal and mechanical design considerations for the reactor and its components
Provide technical presentations on analyses performed to the broader team.
Prepare informal and formal reports to document findings and make reasoned recommendations, and report to core thermal hydraulic team manager/lead


Key Qualifications and Skills B.S., M.S., or Ph.D in Mechanical, Nuclear, or other relevant technical Engineering area from an accredited university
Minimum of 6+ years of experience in the relevant industry with a B.S. degree, or 3+ years with an M.S or Ph.D. degree with demonstrated ability to perform the thermal-hydraulic analysis of nuclear reactor core components for simulation-based design
Strong background in nuclear thermal-hydraulics analysis, with demonstrated expertise in evaluating and performing engineering calculations related to heat and mass transfer in nuclear reactor cores, as proven through university research, publications, and/or work experience




System One, and its subsidiaries including Joul--, ALTA IT Services, and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

#M-
#LI-
#DI-

Ref: #161-Managed Staffing Charlotte

Keywords: System One, Olympia , Thermal-Hydraulic Software Analysis Engineer, IT / Software / Systems , Bellevue, Washington