# Thermal-Hydraulics and Safety Analysis Engineer - Isotopes at Oklo

- Company: Oklo
- What the company does: 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.
- Company website: http://oklo.com
- Type: Startups
- Level: Mid level
- Location: Santa Clara, CA or Remote
- Work setup: Remote
- Pay: $150K to $200K base salary per year (USD)
- Posted: 2026-09-25
- Apply by: 2026-11-09
- Apply: https://job-boards.greenhouse.io/oklo/jobs/6208066004
- Page: https://www.1752.vc/careers/jobs/oklo-thermal-hydraulics-and-safety-analysis-engineer-isotopes/

## 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

Tags: Isotopes