Position Title: Senior Engineer, Plant Thermal Hydraulics Methods
Position Description: Protingent Staffing has an exciting contract Senior Engineer, Plant Thermal Hydraulics Methods opportunity.
Job Responsibilities:
Develop plant-scale thermal hydraulic analysis methods, including modeling strategies, numerical approaches, and closure models.
Perform steady-state and transient system-level analyses to characterize model behavior, assess method performance, and define method fidelity requirements.
Support method qualification, including numerical verification, applicability envelopes, and performance characterization.
Formulate and integrate closure models and correlations (e.g., heat transfer, pressure drop, mixing, component-level physics) into existing analysis frameworks.
Identify modeling gaps and support method enhancement using and sensitivity studies.
Develop automated workflows and tools for model setup, execution, post processing, and repeatable method application.
Document modeling methodologies, assumptions, method applicability, and numerical performance for design processes and licensing support activities.
Work across disciplines to ensure thermal hydraulic methods integrate effectively with plant design, safety analysis, and coupled simulation workflows.
Apply and improve Company's SQA and NQA 1 modeling practices, ensuring traceability, configuration control, and reproducibility of methods.
Job Qualifications:
Degree in Mechanical, Nuclear, Chemical Engineering, or similar fields, with 5+ years of experience in system-level thermal hydraulic modeling and method development for nuclear or complex energy systems.
Demonstrated experience in developing or improving analysis methods, including numerical scheme development, closure model formulation, and stability/accuracy optimization strategies.
Experience performing system-level thermal hydraulic analyses using tools such as RELAP5 3D, GOTHIC, SAS, or equivalent, with the ability to extend or tailor modeling approaches within these frameworks.
Strong foundation in thermal fluids and reactor system behavior, including complex thermal hydraulic phenomena relevant to advanced reactor designs.
Experience in sensitivity analyses and model gap identification that support method development priorities.
Familiarity with scientific programming and workflow automation (e.g., Python, MATLAB).
Familiarity with NQA 1 quality assurance for modeling workflows, including documented methodologies, configuration control, and model traceability.
Strong analytical thinking, clear technical communication, and the ability to support multiple method development efforts in parallel.
Travel Required: 0-5%
Job Details:
Contract
Pay Rate Range: $52 - $85 *Pay rates are approved based on candidate location, education and experience*
Location: Bellevue, WA or 100% REMOTE
Export control regulations require candidates to be a U.S. Citizen, U.S. Legal Permanent Resident, or of a protected person status
Benefits Package: Protingent offers competitive salaries, insurance plan options (HDHP plan or POS plan), education/certification reimbursement, pre-tax commuter benefits, Paid Time Off (PTO), and an administered 401k plan.
About Protingent: Protingent is an Award-Winning provider of top-tier Engineering and IT talent, trusted by companies at the forefront of innovation — from Software and Aerospace to AI, Clean Tech, Medical Devices, and Connected Technologies. We’re passionate about making a positive impact by connecting exceptional talent with meaningful opportunities and helping our clients build the future. #TerraPro
Numbers & Facts
Location
Bellevue, WA (Remote)
Salary
$52–$85 Per Year
Skills
Analysis Skillsunmatched
Automationunmatched
Change Controlunmatched
Chemical Engineeringunmatched
Communication Skillsunmatched
Customer Support/Serviceunmatched
Documentation Modelsunmatched
Heat Transferunmatched
Hydraulic Engineeringunmatched
Legalunmatched
Licensingunmatched
MATLABunmatched
Nuclear Engineeringunmatched
Performance Analysisunmatched
Physicsunmatched
Plant Layout and Designunmatched
Python Programming/Scripting Languageunmatched
Quality Assuranceunmatched
Regulationsunmatched
Requirements Managementunmatched
Simulationunmatched
Software Testingunmatched
Statistical Analysis System (SAS)unmatched
Systems Analysisunmatched
Thermal Analysisunmatched
Thermal Hydraulicsunmatched
Traceabilityunmatched
United States Citizenunmatched
Willing to Travelunmatched
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