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Hudson Manpower

Nuclear Controls Engineer

Wilmington, NC · On-site

$77K - $100K/yr

Experience with small modular reactor (SMR) control systems such as BWRX-300. * Knowledge of nuclear industry standards and regulatory requirements. * Familiarity with software tools used for system ...

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What is a Small Modular Reactor (SMR) job?

A Small Modular Reactor (SMR) job involves working with advanced nuclear reactor technology that is designed to be smaller, more flexible, and more efficient than traditional nuclear power plants. Professionals in this field may be responsible for reactor design, safety analysis, licensing, construction, operation, or maintenance. Jobs can range from engineering and project management to regulatory compliance and research. SMR roles are crucial for advancing nuclear energy as a clean and reliable power source.

What are the typical daily responsibilities for professionals working with Small Modular Reactors (SMRs)?

Professionals in SMR roles often oversee reactor operations, monitor safety systems, conduct technical analyses, and engage in regular maintenance and troubleshooting of nuclear systems. Daily responsibilities may also include coordinating with regulatory bodies, preparing technical reports, and participating in safety drills or emergency preparedness exercises. Many SMR professionals work closely with engineers, technicians, and project managers to ensure projects stay on track and comply with all safety and regulatory standards. This collaborative environment emphasizes ongoing communication, continuous learning, and strict adherence to industry protocols to support the safe and efficient operation of SMR facilities.

What are the key skills and qualifications needed to thrive in the Small Modular Reactor Smr position, and why are they important?

To thrive in Small Modular Reactor (SMR) roles, professionals need strong backgrounds in nuclear engineering, reactor operations, and safety protocols, usually backed by a relevant engineering degree and nuclear certification. Familiarity with advanced reactor control systems, nuclear regulatory compliance tools, and simulation software is important for daily tasks. Excellent problem-solving, teamwork, and effective communication skills help in managing complex projects and collaborating with multidisciplinary teams. These skills and qualifications are critical for ensuring safe reactor operation, regulatory adherence, and the advancement of innovative nuclear technologies.

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Infographic showing various Small Modular Reactor Smr job openings in the United States as of May 2026, with employment types broken down into 1% Locum Tenens, 1% Internship, 78% Part Time, 3% Temporary, and 17% Contract. Highlights an 85% Physical, 4% Hybrid, and 11% Remote job distribution.

Lead Reactor Physicist / Core Design Lead (SMR / MMR Programs)

Barupon LLC

Irvine, CA • On-site

Full-time

Posted 15 days ago

Job description

Role Summary
BaRupOn LLC is seeking a highly experienced Lead Reactor Physicist / Core Design Lead to own the reactor physics and core design program for its Small Modular Reactor (SMR) and Micro Modular Reactor (MMR) initiatives in the United States.
This is a technical leadership role at the heart of BaRupOn's nuclear engineering organization. The Lead Reactor Physicist will be responsible for the full lifecycle of reactor core design - from initial neutronics modeling and fuel assembly optimization through safety analysis integration and NRC regulatory submissions. This person will work in close partnership with licensing, engineering, and operations teams to ensure every core design is safe, efficient, and fully compliant with applicable U.S. Nuclear Regulatory Commission (NRC) requirements.
The ideal candidate brings deep hands-on experience in reactor physics and core design for advanced or non-light water reactors, a strong command of U.S. nuclear regulatory frameworks, and the technical leadership ability to guide a growing team of physicists and engineers in a fast-paced, mission-driven environment.
Key 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.
  • Evaluate reactor core performance across the full range of operating and accident conditions, ensuring all safety margins are met.

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.

Technical Leadership & Team Development
  • Guide, mentor, and develop a team of junior and mid-level reactor physicists and core design engineers.
  • Establish and maintain core design standards, calculation methodologies, and code validation protocols across the team.
  • Prepare and review technical reports, design certifications, and white papers for internal and regulatory audiences.
  • Represent BaRupOn in technical forums, industry working groups, and national laboratory collaborations related to advanced reactor physics.

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.
  • 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.
  • Demonstrated proficiency with industry-standard neutronics codes (e.g., MCNP, SCALE, CASMO, SIMULATE, or equivalent) and thermal-hydraulic modeling tools.
  • Experience developing and validating computational methods and core simulation models for NRC licensing purposes.
  • Strong technical communication skills, including the ability to author and defend regulatory documents and safety reports.

Preferred Skills & Certifications
  • Licensed Professional Engineer (PE) in the U.S. - preferred.
  • Experience with NRC pre-application engagement and formal licensing interactions.
  • Active membership in recognized nuclear professional organizations, such as the American Nuclear Society (ANS).
  • Experience with advanced fuel cycle design, digital twin modeling, and integrated safety analysis software platforms.
  • Familiarity with NEPA environmental review processes and modular construction design constraints.
  • Strong mentoring, leadership, and cross-functional collaboration capabilities.

Why Join BaRupOn LLC
  • Take technical ownership of core design for one of the most ambitious SMR/MMR programs in the U.S. - from the ground up.
  • Work directly alongside the CNO, CTO, and licensing leadership team with real authority over physics methodology and core design direction.
  • Competitive compensation and benefits, including potential equity participation tied to program milestones.
  • Collaborate with top-tier engineers, national laboratory partners, and federal program stakeholders at the frontier of advanced nuclear energy.
  • A mission-driven company where technical excellence and safety culture are foundational, not aspirational.

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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