BaRupOn LLC
Lead Reactor Physicist / Core Design Lead (SMR / MMR Programs)
Irvine, CA
Sponsorship not specifiedDetected 121 days ago
ComplianceProject ManagementFDA RegulatoryLeadershipCommunicationCollaborationMentoringPE LicenseRegulatory Affairs
About the role
- This is a technical leadership role at the heart of BaRupOn's nuclear engineering organization.
- Evaluate reactor core performance across the full range of operating and accident conditions, ensuring all safety margins are met.
Responsibilities
- Reactor Core Design & Physics Analysis Lead the design, analysis, and optimization of SMR/MMR reactor cores, including fuel assembly configurations, control rod systems, and core loading strategies.
- Perform comprehensive reactor physics calculations: neutronics analysis, burnup and depletion modeling, reactivity control, flux distribution, and thermal-hydraulic integration.
- Develop, validate, and maintain core simulation models and analytical methods using industry-standard neutronics and thermal-hydraulic codes.
- Safety Analysis & Regulatory Compliance Ensure all core designs comply with NRC regulations, safety limits, and licensing requirements, including 10 CFR Part 50, Part 52, and the emerging Part 53 framework for advanced reactors.
- Support the development of Safety Analysis Reports (SAR/FSAR), technical specifications, and other regulatory documentation related to core design and reactor physics.
- Perform or oversee probabilistic risk assessments (PRA) and deterministic safety analyses in support of licensing submissions.
- Respond to NRC requests for additional information (RAIs) on core design and physics matters.
- Cross-Functional Collaboration Collaborate closely with the Director of Licensing & Regulatory Affairs, mechanical and structural engineers, and operations teams to integrate physics requirements into overall reactor system design.
- Provide physics input to thermal-hydraulic, structural, and materials engineering teams throughout the design process.
- Support project management on physics-related milestone planning, schedule dependencies, and technical risk identification.
Requirements
- Deep working knowledge of U.S. nuclear regulatory frameworks, including 10 CFR Part 50, Part 52, and the emerging Part 53 framework for advanced reactors.
- Required Experience & Qualifications Master's or PhD in Nuclear Engineering, Reactor Physics, or a closely related field.
- 10+ years of experience in reactor physics, core design, or nuclear engineering within the U.S. nuclear industry.
- Proven, hands-on experience with reactor core design for SMR, advanced reactor, or Generation IV systems.
- Demonstrated proficiency with industry-standard neutronics codes (e.g., MCNP, SCALE, CASMO, SIMULATE, or equivalent) and thermal-hydraulic modeling tools.
- Experience with NRC pre-application engagement and formal licensing interactions.
- Experience with advanced fuel cycle design, digital twin modeling, and integrated safety analysis software platforms.
Nice to have
- Preferred Skills & Certifications Licensed Professional Engineer (PE) in the U.S. - preferred.
Benefits
- Competitive compensation and benefits, including potential equity participation tied to program milestones.
Equal opportunity
- Statement BaRupOn LLC is an equal opportunity employer.
- All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veteran status, sexual orientation, gender identity, or any other characteristic protected by applicable federal, state, or local law.
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