System Thermal-Hydraulics Analyst

Aalo Atomics

$110K — $120K *
Energy & Utilities
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • MSc in Nuclear Engineering or a closely related field.
  • 5+ years of proven experience with thermal-hydraulic codes like RELAP5 / RELAP5-3D or TRACE.
  • Strong understanding of single and two-phase flow, heat transfer, and nuclear reactor thermal-hydraulics.
  • Ability to work independently on complex analysis tasks.

Responsibilities

  • Develop, execute, and maintain thermal-hydraulic models using RELAP5-3D.
  • Perform steady-state and transient analyses for nuclear systems.
  • Interpret and document analytical results for licensing and safety assessments.
  • Collaborate with teams to support integrated system evaluations.
  • Participate in code verification and validation activities.
  • Prepare technical reports and presentations for stakeholders.

Benefits

  • Health, Dental, Vision Insurance
  • Paid Time Off
  • Corporate Gym Membership
Full Job Description
About the role

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.

What you'll do

  • 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.


Qualifications

Required:

  • 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.


Preferred Qualifications

  • 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.

Requirements:

  • Based in the United States
  • Willing to work on-site in Idaho Falls, Idaho

What We Offer:

  • Competitive salary starting at $110,000
  • Health, Dental, Vision Insurance
  • Paid Time Off
  • Corporate Gym Membership

Additional Information:

Aalo Atomics provides a collaborative and supportive work environment, opportunities for professional growth, intellectually challenging careers, and competitive compensation. Direct applicants only. No recruiters or staffing agencies, please.

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