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Oklo Inc · 3 weeks ago

Core Thermal-Hydraulics Methods Engineer

United States

Full-time

Remote

Mid Level

$73K/yr - $157K/yr

Oklo Inc. is developing fast fission power plants to deliver clean, reliable, and affordable energy at scale. The Core Thermal-Hydraulics Methods Engineer will be responsible for analyzing fluid flow and heat transfer within a reactor and associated systems, contributing to the development and validation of methods for modeling coolant flow within reactor cores.

Clean EnergyEnergyManufacturingNuclearRenewable Energy

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

Thermal-hydraulics analysisHeat transferFluid dynamicsNumerical methodsPythonCI/CD environmentsReactor systems codesSubchannel analysis codesTechnical writingTeam collaborationCreative problem solvingDetail-oriented

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