Senior CFD Engineer

• Build and run CFD models for heat exchanger components and flow paths (headers/manifolds, distributors, tube/fin passages, shell-side features, compact HX geometries, etc.) • Drive pressure drop and heat transfer performance predictions and trade studies (ΔP vs UA/effectiveness, temperature approach, flow distribution, hot spots) • Develop a repeatable CFD workflow: geometry → mesh → solve → post-process → standardized report package • Execute parametric sweeps and sensitivity analyses to support rapid iteration and design decisions • Improve throughput by reducing model failure modes and cycle time through automation, templates, and best practices • Translate CFD outputs into actionable design changes in collaboration with mechanical design and systems engineering • Create or refine engineering correlations / reduced-order models (Nu, f, HTC) to feed sizing and system tools where appropriate • Support vendor and partner alignment by clearly defining assumptions, boundary conditions, acceptance criteria, and evidence packages

• B.S. in Mechanical, Aerospace, or a related engineering field (M.S./PhD a plus) • Strong fundamentals in heat transfer and fluid mechanics; comfort reasoning from first principles and sanity-checking results • 4+ years of hands-on CFD experience in thermal-fluids applications (more experience welcomed; we can level this role) • Experience with heat exchangers or closely related mass/heat transfer hardware (compact HX, manifolds, internal flows, finned passages, etc.) • Proficiency in at least one major CFD solver: ANSYS Fluent/CFX, STAR-CCM+, OpenFOAM, or COMSOL • Practical meshing and modeling judgment: boundary layers, y+, turbulence model selection, convergence criteria, grid independence • Ability to communicate results clearly to non-CFD stakeholders and defend assumptions under schedule pressure • Multi-phase or boiling/condensing modeling experience is a plus • Experience with flow distribution challenges and mitigation (distributors, baffles, headers) is a plus • Experience with flow-induced vibration considerations or coupling CFD insights to structural risk is a plus • Python-based automation of meshing/runs/post-processing; comfort on HPC environments (Slurm/PBS) is a plus • Experience producing decision-grade analysis packages in high-reliability industries is a plus