Oklo Inc · 1 day ago
Core Thermal-Hydraulics Methods Engineer
Santa Clara, CA
Full-time
Hybrid
Mid Level
$73K/yr - $157K/yrOklo Inc. is developing fast fission power plants to deliver clean, reliable, and affordable energy at scale. The Core Thermal-Hydraulics Methods Engineer will analyze fluid flow and heat transfer within reactors and contribute to the development and validation of modeling methods for coolant flow within reactor cores.
EnergyRenewable EnergyManufacturingClean EnergyNuclear
Responsibilities
Modeling core thermal-hydraulic behavior using subchannel codes such as DASSH, or MOOSE-Subchannel
One-dimensional systems codes such as SAS4A/SASSYS-1 or SAM
First principles approaches and in-house flow network models
Developing methods to analyze core thermal-hydraulic behavior at steady-state and during transients
Developing and utilizing analysis methods that efficiently and effectively build confidence in a design
Automation, verification, and validation of modeling and simulation tools in support of analyses
Collaborating cross-functionally to define design requirements, and providing technical feedback to quick-iterating design teams
Document work using modern tools and techniques, and write well-written, thoughtful technical reports
Qualification
Required
Bachelors, Masters, or PhD in a technical field, such as nuclear, mechanical, or aerospace engineering
Proficiency with thermal-hydraulics (thermal fluids) analysis methods
Core competencies in heat transfer, fluid dynamics, and thermodynamics first principles
Experience with low-fidelity and intermediate-fidelity (e.g., porous body and correlation-based) models for heat transfer and fluid flow
Experience with numerical methods and software development for heat transfer and fluid flow problems
Experience with data processing (e.g., pre-processing, post-processing, scripting)
Preferred
Fluency with Python
Experience with CI/CD computing environments
Experience with reactor systems codes, such as SAS4A/SASSYS-1, SAM, RELAP, TRACE, or GOTHIC
Experience with qualification and validation of analyses
Experience with subchannel analysis codes, such as DASSH, MOOSE-Subchannel, COBRA-TF, or similar
Experience with high-fidelity computational fluid dynamics analysis
Benefits
Flexible time off
Equity
Competitive pay
401k
Health insurance
FSA
Flexible work hours
Other benefits
Company
Oklo Inc
Oklo's mission is to provide clean, reliable, affordable energy through the deployment of next-generation fast fission technology and recycling nuclear waste.
Founded in 2013
51-200 employees
Funding
Current Stage
Public CompanyTotal Funding
$440.6M2025-06-12Post Ipo Equity· $440.6M
2024-05-09IPO
2021-11-15Series Unknown
Leadership Team
Jacob DeWitte
CEO and Co-Founder
Craig Bealmear
Chief Financial Officer
Recent News
2026-02-12
The Motley Fool
2026-02-10
2026-02-09
Company data provided by crunchbase