✦ Luna Orbit — Engineering (Non-Software)

Thermal Hydraulics Engineer 3 (R&D)

at NuScale Power

📍 Remote, US Remote 💰 $97K – $152K USD / year Posted March 30, 2026
Salary $97K – $152K USD / year
Type Full-Time
Experience mid
Exp. Years Minimum of 5 years of full-time experience in thermal hydraulic modeling and analysis
Education Bachelor's degree in Nuclear, Mechanical, or Chemical Engineering; MS or PhD preferred.
Category Engineering (Non-Software)

The Thermal Hydraulics Engineer 3 will develop thermal hydraulics analysis capability for NuScale’s microreactor design, performing sizing, modeling, and steady-state/transient analyses while supporting software selection and collaboration with core physics models.

  • ['Support thermal systems analysis software selection', 'Perform sizing calculations for single phase fluid and heat exchange components', 'Thermal systems model development', 'Perform steady state and transient analysis', 'Automate analysis updates to accommodate design changes']

Focus on thermal hydraulics analysis and CFD for microreactor; includes coupling with core physics; regulatory compliance with 10 CFR parts; uses thermal systems analysis tools; automation

The ideal candidate is a mid-level to senior thermal hydraulics engineer with 5+ years of nuclear-related thermal modeling, CFD, heat-pipe modeling, and regulatory familiarity; comfortable with R&D and cross-functional coupling with core physics models.

5 years of thermal hydraulic modeling experienceEligibility to work under 10 CFR Part 810Bachelor's degree in NuclearMechanicalor Chemical Engineering
MS or PhD in NuclearMechanicalor Chemical Engineeringexperience with core physics couplinguniversity collaboration experienceautomation scripting
thermal hydraulicsthermal hydraulics modelingcomputational fluid dynamicsCFDheat pipe modelingsteady state analysistransient analysisautomationmodel developmentbenchmarkscore physics couplinguniversity collaborationsoftware selectionregulatory standards (10 CFR Part 81010 CFR 50 Appendix BNQA-1)
thermal hydraulics modelingthermal hydraulics analysiscomputational fluid dynamicsCFDheat pipe modelingsteady state analysistransient analysisthermal systems analysis softwaremodel developmentbenchmarks for model verificationautomationuniversity collaborationcoupled analysis with core physics modelsregulatory standards (10 CFR Part 81010 CFR 50 Appendix B10 CFR 21NQA-1)
problem solvingoral/written communicationplanning/organizingadaptabilitydependabilityteam buildingsafety culturequality assurance
Industry Energy
Job Function Develop and implement thermal hydraulics analysis for NuScale's microreactor design
Role Subtype Thermal hydraulics engineer
thermal hydraulics engineerthermal hydraulics modelingcomputational fluid dynamicsCFDheat pipe modelingsteady state analysistransient analysisthermal systems analysis softwaremodel developmentbenchmarks for model verificationautomationuniversity collaborationcoupled analysis with core physics models10 CFR Part 81010 CFR 50 Appendix BNQA-1NuScale Powermicroreactorremotetravelthermal hydraulicsnuclear engineeringheat pipesteady statecore physics

Less than 5 years experience, Not eligible to work under 10 CFR Part 810, Not in Nuclear/Mechanical/Chemical Engineering, Unable to travel up to 30%

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