Senior Computational Fluid Dynamics Engineer
About this role
Oklo seeks a Senior Computational Fluid Dynamics Engineer to conduct high-fidelity thermal-hydraulic simulations for advanced fission reactor systems, including reactor cores, vessels, heat exchangers, and balance-of-plant equipment. You will develop and validate analysis methods, collaborate with design teams on reactor design decisions, and produce rigorous technical documentation to support licensing and engineering confidence.
Responsibilities
- —Develop and conduct high-fidelity CFD analyses to evaluate thermal-hydraulic behavior in reactor cores, vessels, heat exchangers, power conversion, and balance-of-plant systems
- —Design, model, and analyze thermal-hydraulic systems using first-principles approaches
- —Develop and utilize analysis methods to build engineering confidence in design decisions
- —Perform multi-disciplinary engineering analyses including thermal, fluid, safety, manufacturability, and cost assessments
- —Collaborate cross-functionally with design teams to define thermal-hydraulic requirements and provide technical feedback
- —Document work using modern tools and produce clear, thorough technical reports for internal and regulatory stakeholders
Qualifications
- —Bachelor's, Master's, or PhD in nuclear, mechanical, or aerospace engineering or related technical field
- —Proficiency with STAR-CCM+, ANSYS Fluent, OpenFOAM, Nek-5000, or equivalent CFD software
- —Strong competency in heat transfer, fluid dynamics, and thermodynamics first principles
- —Experience with data processing including pre-processing, post-processing, and scripting
Desired
- —5+ years of CFD experience in an industrial or power generation setting
- —Experience with thermal-hydraulic engineering principles and multi-physics analysis for power systems
- —Knowledge of nuclear engineering principles, advanced reactor designs, or small modular reactors (SMRs)
- —Experience analyzing heat exchangers, turbomachinery, and fluid control systems
- —Proficiency with Python and modern software engineering practices
- —Experience with reactor transient analysis methods
- —Familiarity with systems or reactor safety codes such as GOTHIC, RELAP, TRACE, SAM, or SAS4A/SASSYS-1
Location
Remote with required travel to Santa Clara, CA headquarters twice quarterly; the first two weeks of onboarding must be completed in-person at headquarters.
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Job details
About the company
Oklo →An advanced fission company developing the Aurora powerhouse, a fast-reactor microreactor designed to deliver clean baseload power.
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Senior Computational Fluid Dynamics Engineer
Oklo