Oklo Inc. is developing fast fission power plants to deliver clean, reliable, affordable energy at scale, establishing a domestic supply chain for…. Backed by Y Combinator.
About the role
Develop, maintain, and execute systems-level thermal-hydraulic models of reactor and plant behavior using RELAP5 or comparable analysis codes. Analyze normal operating conditions, anticipated operational occurrences, design-basis events, and selected beyond-design-basis conditions relevant to the thermal-hydraulic safety case.
What they're looking for
- Bachelor's, master's, or doctoral degree in nuclear, mechanical, chemical, or aerospace engineering, or a closely related technical field
- Five or more years of relevant experience in reactor thermal-hydraulics, nuclear safety analysis, reactor transient analysis, or a closely related field. A relevant advanced degree may substitute for a portion of the professional experience
- Demonstrated experience developing and executing systems-level transient models using RELAP5
- Strong foundation in heat transfer, fluid mechanics, thermodynamics, and reactor thermal-hydraulics
- Experience defining and analyzing reactor transients or accident scenarios, including initial conditions, boundary conditions, equipment response, operator or control actions, and acceptance criteria
- Experience evaluating the reasonableness and applicability of models, correlations, assumptions, and results rather than treating analysis software as a black box
More about this role
Thanks for your interest in Oklo! We are searching for a Thermal-Hydraulics and Safety Analysis Engineer to join our isotope engineering team to own the thermal hydraulic safety case for the next generation of domestic isotope production facilities.
The Thermal-Hydraulics and Safety Analysis Engineer is responsible for developing and executing systems-level thermal-hydraulic analyses that support the safety case, design basis, and licensing of Oklo's reactor systems. This engineer will evaluate reactor and plant response during normal operation, anticipated operational occurrences, and postulated accident conditions using codes such as RELAP5 and other systems-analysis tools.
This role combines hands-on transient modeling with safety-methodology development. The engineer will establish modeling approaches, assess code and model applicability, quantify uncertainty, and produce clear, auditable technical documentation suitable for licensing applications and regulatory review. The engineer will work closely with safety, licensing, reactor physics, thermal-hydraulics, controls, and system-design teams to connect analysis assumptions and acceptance criteria to an evolving reactor...
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