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Senior Computational Fluid Dynamics Engineer

Oklo - Santa Clara, CA or Remote

Posted May 15, 2026

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About this role

Senior Computational Fluid Dynamics Engineer Santa Clara, CA or Remote Thanks for your interest in Oklo! We are searching for a Senior Computational Fluid Dynamics (CFD) Thermal-Hydraulics Engineer to join our team. Position Description The thermal-hydraulics group at Oklo is responsible for analyzing fluid flow and heat transfer within a reactor and associated systems. This work includes engineering analyses of thermal-fluid dynamics, clear and thorough documentation of the analyses, as well as interfacing with design teams. A CFD Engineer in this group will be responsible for conducting high-fidelity thermal fluid simulations using commercial CFD tools. Level (Engineer III/Senior) will be determined by experience. Specific responsibilities may include: - Developing and conducting high-fidelity analyses using CFD to analyze thermal-hydraulic behavior through the reactor core, reactor vessel, heat exchangers, power conversion, and balance of plant systems - Proactively designing, modeling, and analyzing thermal hydraulic systemsDeveloping and utilizing analysis methods that efficiently and effectively build confidence in a design - Performing engineering analyses, which can include thermal, fluid, safety, manufacturability, and cost - Collaborating cross-functionally to define design requirements, and providing technical feedback to quick-iterating design teams - Documenting work using modern tools and techniques, and writing well-written, thoughtful technical reports - Providing technical feedback to quick-iterating design teams Minimum Qualifications - Bachelors, Masters, or PhD in a technical field, such as nuclear, mechanical, or aerospace engineering - Proficiency with STAR-CCM+, ANSYS Fluent, OpenFOAM, Nek-5000, or equivalent - Core competencies in heat transfer, fluid dynamics, and thermodynamics first principles - Experience with data

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