System Thermal-Hydraulics Analyst

Aalo Atomics•Idaho Falls, ID

1d•Onsite

About The Position

We are seeking an experienced System Thermal-Hydraulics Analyst to support advanced nuclear system analysis and safety evaluations. The successful candidate will perform detailed system-level thermal-hydraulic modeling and contribute to analysis supporting reactor design, safety margins, and transient/accident behavior.

Requirements

MSc in Nuclear Engineering or a closely related field.
5+ years of proven experience performing analyses with system thermal-hydraulic codes such as RELAP5 / RELAP5-3D, and/or TRACE.
Strong understanding of single and two-phase flow, heat transfer, and nuclear reactor thermal-hydraulics.
Demonstrated ability to work independently on complex analysis tasks.
Based in the United States
Willing to work on-site in Idaho Falls, Idaho
Applicants must be U.S. Citizens or U.S. Persons in compliance with 10 CFR Part 810 and may not hold non-compliant foreign citizenships.

Nice To Haves

Experience supporting DOE, NRC, or national laboratory projects.
Familiarity with model development best practices and QA requirements for safety-related analysis.
Experience mentoring junior analysts.

Responsibilities

Develop, execute, and maintain system thermal-hydraulic models using RELAP5-3D code.
Perform steady-state and transient analyses for nuclear systems, including normal operation, off-normal events, and accident scenarios.
Interpret and document analytical results to support licensing, design decisions, and safety assessments.
Collaborate with reactor designers, safety analysts, and experimental teams to support integrated system evaluations.
Participate in code verification, validation, and benchmarking activities against experiments or operating data.
Prepare high-quality technical reports, analysis documentation, and presentations for internal and external stakeholders.