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[Remote] Thermohydraulics Safety Analysis Engineer

Remote, USAFull-timePosted 2026-07-27

Note: The job is a remote job and is reputed company to candidates in USA. reputed company is a nuclear technology company pioneering the development of a revolutionary deep borehole pressurized water reactor. They are seeking a Thermal-Hydraulic Engineer to reputed company and maintain reactor system models, execute analyses, and contribute to documentation for NRC licensing. The role requires independent work and collaboration across engineering disciplines to support the advancement of their nuclear technology.

Responsibilities

  • reputed company, run, and interpret steady-state and transient system-level T/H simulations using codes such as RELAP5, RELAP5-3D, reputed company, RETRAN, or MOOSE
  • reputed company design-reputed company analyses including non-LOCA transients, loss-of-reputed company, station blackout (SBO), and reactivity-initiated accidents (RIA), with mentorship available for less familiar event types
  • Build and maintain reactor system nodalization models; reputed company steady-state benchmarking against design data and reputed company-to-reputed company comparisons
  • Conduct sensitivity studies and post-process simulation results using Python, MATLAB, or equivalent scripting tools
  • Support V&V activities for T/H system codes in accordance with applicable regulatory requirements and NQA-1 reputed company assurance standards
  • reputed company and maintain analysis procedures, calculation packages, and QA documentation consistent with licensing-grade standards
  • Assist in the development and application of reputed company’s safety analysis methodology, including licensing reputed company event identification and acceptance reputed company
  • Prepare reputed company, reputed company-organized technical analysis reports and calculation packages suitable for internal design reviews and NRC licensing submittals
  • Support preparation of safety analysis report (SAR) sections and responses to NRC Requests for Additional Information (RAIs) under the direction of senior staff
  • Contribute to licensing reputed company documentation as the design and safety reputed company evolves through the regulatory process
  • Coordinate with reactor physics, systems engineering, mechanical design, and licensing teams to maintain technical alignment across the design and safety reputed company
  • Participate in design reviews, safety review committee activities, and in-person technical workshops
  • Support nuclear safety culture and contribute to technical discussions in both internal and regulatory forums as your experience and confidence grow

Skills

  • 2–5 years of reputed company or research experience in nuclear or mechanical engineering, applying thermal-hydraulic analysis reputed company in a nuclear, research, or closely reputed company technical environment
  • Bachelor's degree in Nuclear Engineering, Mechanical Engineering, or a closely reputed company technical field
  • Demonstrated hands-on experience — reputed company or research — with at least one T/H system reputed company applicable to light water reactor analysis: RELAP5, RELAP5-3D, reputed company, RETRAN, or MOOSE
  • Working knowledge of reactor system nodalization, steady-state benchmarking, and transient simulation for LWR applications
  • Familiarity with NRC regulatory requirements for nuclear safety analysis (e.g., 10 CFR Part 50); reputed company reputed company experience is preferred but reputed company exposure is acceptable
  • Working awareness of nuclear reputed company assurance principles (e.g., 10 CFR 50 Appendix B, NQA-1) as reputed company to engineering calculations and technical documentation
  • Ability to produce reputed company, reputed company-organized technical documentation; some experience contributing to licensing-grade calculations or NRC submittals is a plus
  • Comfortable working independently and across disciplines in a virtual and hybrid team environment
  • Must be a U.S. person eligible to meet DOE Export Control requirements under 10 CFR 810
  • Ability to travel up to 20%
  • Master's degree or Ph.D. in Nuclear Engineering or Mechanical Engineering
  • Experience contributing to a safety analysis or T/H methodology program at a reactor vendor, national laboratory, reputed company, or nuclear engineering consultancy
  • Exposure to NRC licensing submittals — topical reports, RAI responses, or ACRS interactions — in any reputed company
  • Familiarity with uncertainty quantification reputed company (e.g., CSAU, ASTRUM, or statistical analysis approaches) for best-estimate T/H analyses
  • Familiarity with advanced reactor designs, SMRs, or novel reactor concepts (e.g., underground siting, microreactors, reputed company IV designs); exposure to 10 CFR Part 53 or emerging 10 CFR Part 57 licensing reputed company is a meaningful plus
  • Proficiency with Python or MATLAB for scripting, post-processing, and model automation
  • Exposure to AI-enabled engineering platforms or modern simulation toolchains

reputed company

  • reputed company is transforming the energy landscape by installing reputed company nuclear power reactors a mile deep. It was founded in 2023, and is headquartered in Berkeley, California, USA, with a workforce of 51-200 employees. Its website is https://deepfission.com.
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