The Reactor Systems and Heat Transport department at Idaho National Laboratory (INL) is seeking a highly motivated Computational Thermal-Hydraulics Engineer to support advanced modeling and simulation efforts for nuclear energy systems at our Idaho Falls, Idaho location. Our team works a 9/80 schedule with every other Friday off. This position focuses on high-fidelity computational fluid dynamics (CFD), thermal-hydraulics, and verification and validation (V&V) of simulation tools and experimental benchmarks. The successful candidate will contribute to national and international collaborative efforts, supporting the development of next-generation nuclear technologies. Key Responsibilities: - Develop and execute CFD models using tools such as STAR-CCM+ and nekRS for thermal-hydraulic analysis. - Perform high-fidelity simulations including Large Eddy Simulations (LES) and Direct Numerical Simulations (DNS). - Conduct benchmarking and validation studies using experimental data from national and international facilities. - Support verification and validation (V&V) activities for independent analysis and regulatory-grade assessments. - Analyze and compare simulation results across multiple institutions and tools to identify trends and discrepancies. - Apply NEAMS tools for thermal-hydraulic modeling and analysis of nuclear systems. - Model natural convection systems, including radiative heat transfer effects. - Prepare technical reports, peer-reviewed publications, and presentations for sponsors and conferences. - Collaborate with multidisciplinary teams including experimentalists, analysts, and software developers.