Nuclear Safety Analysis Engineer

Deep Fission is a public nuclear technology company developing a deep borehole pressurized water reactor and advancing its Gravity Nuclear Reactor toward commercial deployment. The Nuclear Safety Analysis Engineer will perform accident analyses, radiological consequence evaluations, safety calculations, and licensing documentation to support the reactor safety case and regulatory engagement with the NRC and DOE.

Responsibilities:

• Perform and document accident analyses, including design basis accident (DBA) and beyond-design-basis event evaluations, to support the reactor's safety case
• Develop and apply nuclear safety analysis methods and codes to evaluate reactivity control, core response, and system behavior under off-normal conditions
• Evaluate radiological consequences of accident scenarios in coordination with health physics, incorporating dose assessment inputs into safety documentation
• Contribute to probabilistic and deterministic safety analyses supporting design decisions and regulatory submittals
• Support development of safety analysis reports (SAR/PSAR), technical specifications, and licensing basis documentation
• Support preparation of licensing submittals and responses to NRC and DOE requests for additional information related to safety analysis
• Interpret regulatory requirements (e.g., 10 CFR Part 50/52) and translate them into safety analysis inputs and design recommendations
• Maintain traceability between safety analysis assumptions, design inputs, and licensing commitments
• Coordinate with reactor design, health physics, and licensing teams to ensure safety analysis assumptions remain consistent with evolving design
• Coordinate with external consultants and national laboratory partners on safety analysis methodology and validation work
• Promote a proactive nuclear safety culture across engineering, licensing, and field-based activities

Requirements:

• 7–10 years of relevant experience in nuclear safety analysis or accident analysis within a regulated nuclear environment (commercial nuclear, DOE, national laboratory, or naval nuclear); commercial nuclear background preferred
• Demonstrated, hands-on experience performing accident analysis, including design basis accident evaluation
• Experience with nuclear safety analysis codes and methods (e.g., MELCOR, RADTRAD, SCALE, ORIGEN, or comparable tools)
• Bachelor's degree in Nuclear Engineering or a related technical field, with a solid understanding of reactor physics and safety analysis principles
• Working knowledge of radiological consequence assessment as it relates to accident analysis (close coordination with health physics expected; CHP credential not required for this role)
• Strong technical writing skills, with the ability to produce clear, defensible documentation suitable for regulatory review
• Must be a U.S. person eligible to meet DOE Export Control requirements under 10 CFR 810
• Ability to work independently in a remote-first, cross-functional environment with senior stakeholders
• Willingness to travel domestically for team offsites, training sessions, and site visits as required. Approximately 20% travel
• Direct experience at a commercial nuclear power plant, in a Reactor/Nuclear Safety Analysis or Licensing group
• Advanced degree (MS) in Nuclear Engineering or a related field
• Direct experience with SMRs, Gen IV technologies, or first-of-a-kind nuclear reactor development
• Demonstrated experience navigating NRC or DOE licensing processes, including SAR development and RAI responses
• Familiarity with nuclear QA programs (e.g., NQA-1) and compliance documentation
• Experience with probabilistic risk assessment (PRA) tools and methods (e.g., SAPHIRE)
• Proficiency with engineering software tools and AI-enabled platforms
• Experience in startup or innovation-driven organizations where scope and process are actively evolving