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Reactor Core Thermal Fluids Engineer

Oklo - Santa Clara, CA or remote

Posted Jun 6, 2026

Benefits

Parental leave
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Non-birth-parent leave
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Family-building benefits
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  • Surrogacy assistance: Not verified
Mental health support
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Relocation assistance
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Childcare support
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Market context

U.S. role benchmark (BLS OEWS)
$116,543 U.S. median for this role
Projected growth (BLS Employment Projections)
+9.8% - Much faster than average

Matched to SOC 15-1252 - Software Engineering aggregate by role bucket.

Source: U.S. Bureau of Labor Statistics, OEWS, May 2024 and Employment Projections, 2024-2034.

Role

Role function
Engineering From the posting source
Seniority
Mid From the posting source
Work mode
Remote From the posting source
In-office days
0 days From the posting source

Schedule

Shift type
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Weekend work
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Company

Equity
Offered Verified - SEC 10-K source

Application

Cover letter
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Assessment
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Deadline
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Where they hire

State eligibility is not yet verified.

About this role

Reactor Core Thermal Fluids Engineer Santa Clara, CA or remote Thanks for your interest in Oklo! We are searching for a Thermal Fluids Engineer to join our Core Thermal-Hydraulics team. Position Description The Core Thermal-Hydraulics team at Oklo is responsible for analyzing fluid flow and heat transfer within a reactor core. The work includes engineering analyses of thermal-fluid dynamics, clear and thorough documentation of the analyses, as well as interfacing with design teams. A engineer on the team will contribute to the development, qualification, and validation of methods for modeling coolant flow within reactor cores using one-dimensional models, intermediate-fidelity subchannel models, and high-fidelity computational fluid dynamics models. Specific responsibilities may include: - Modeling core thermal-hydraulic behavior using - subchannel codes such as DASSH, MOOSE-Subchannel, or COBRA-TF - one-dimensional systems codes such as SAS4A/SASSYS-1 or RELAP - first principles approaches and in-house flow network models - 3-D computational fluid dynamics - Developing and documenting methods to analyze core thermal-hydraulic behavior at steady-state and during transients - 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 Minimum Qualifications - Bachelors, Masters, or PhD in a technical field, such as nuclear, mechanical, or aerospace engineering - Proficiency with thermal fluids (thermal-hydraulics) analysis methods and first principles - Able to write clear and concise documentation - Experience with - low-fidelity and intermediate-fidelity (e.g., porous body and correlation-based) models for heat transfer and fluid flow -

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