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Physics Engineer Jobs in Riverside, CA (NOW HIRING)

US Navy

Nuclear Engineer

Crestline, CA

$89.90K - $107.80K/yr

Job Title: Nuclear Engineer (Naval Reactors Engineer) Category / Component: Officer • Active ... physics, materials development, component design for steam generators, pumps, and valves ...

US Navy

Nuclear Engineer

Glendora, CA

$100.80K - $120.70K/yr

Job Title: Nuclear Engineer (Naval Reactors Engineer) Category / Component: Officer • Active ... physics, materials development, component design for steam generators, pumps, and valves ...

US Navy

Nuclear Engineer

Chino, CA

$100.20K - $120K/yr

Job Title: Nuclear Engineer (Naval Reactors Engineer) Category / Component: Officer • Active ... physics, materials development, component design for steam generators, pumps, and valves ...

US Navy

Nuclear Engineer

Muscoy, CA

$111.30K - $133.30K/yr

Job Title: Nuclear Engineer (Naval Reactors Engineer) Category / Component: Officer • Active ... physics, materials development, component design for steam generators, pumps, and valves ...

US Navy

Nuclear Engineer

Walnut, CA

$100.40K - $120.20K/yr

Job Title: Nuclear Engineer (Naval Reactors Engineer) Category / Component: Officer • Active ... physics, materials development, component design for steam generators, pumps, and valves ...

US Navy

Nuclear Engineer

Romoland, CA

$102.10K - $122.30K/yr

Job Title: Nuclear Engineer (Naval Reactors Engineer) Category / Component: Officer • Active ... physics, materials development, component design for steam generators, pumps, and valves ...

US Navy

Nuclear Engineer

Mentone, CA

$98.70K - $118.20K/yr

Job Title: Nuclear Engineer (Naval Reactors Engineer) Category / Component: Officer • Active ... physics, materials development, component design for steam generators, pumps, and valves ...

US Navy

Nuclear Engineer

Tustin, CA

$103.20K - $123.70K/yr

Job Title: Nuclear Engineer (Naval Reactors Engineer) Category / Component: Officer • Active ... physics, materials development, component design for steam generators, pumps, and valves ...

US Navy

Nuclear Engineer

Eastvale, CA

$103.50K - $124K/yr

Job Title: Nuclear Engineer (Naval Reactors Engineer) Category / Component: Officer • Active ... physics, materials development, component design for steam generators, pumps, and valves ...

US Navy

Nuclear Engineer

Silverado, CA

$104.20K - $124.90K/yr

Job Title: Nuclear Engineer (Naval Reactors Engineer) Category / Component: Officer • Active ... physics, materials development, component design for steam generators, pumps, and valves ...

US Navy

Nuclear Engineer

Upland, CA

$100.30K - $120.20K/yr

Job Title: Nuclear Engineer (Naval Reactors Engineer) Category / Component: Officer • Active ... physics, materials development, component design for steam generators, pumps, and valves ...

US Navy

Nuclear Engineer

Menifee, CA

$104.20K - $124.90K/yr

Job Title: Nuclear Engineer (Naval Reactors Engineer) Category / Component: Officer • Active ... physics, materials development, component design for steam generators, pumps, and valves ...

US Navy

Nuclear Engineer

Beaumont, CA

$100.60K - $120.50K/yr

Job Title: Nuclear Engineer (Naval Reactors Engineer) Category / Component: Officer • Active ... physics, materials development, component design for steam generators, pumps, and valves ...

US Navy

Nuclear Engineer

Lakeview, CA

$100.60K - $120.50K/yr

Job Title: Nuclear Engineer (Naval Reactors Engineer) Category / Component: Officer • Active ... physics, materials development, component design for steam generators, pumps, and valves ...

US Navy

Nuclear Engineer

Sage, CA

$101.80K - $122K/yr

Job Title: Nuclear Engineer (Naval Reactors Engineer) Category / Component: Officer • Active ... physics, materials development, component design for steam generators, pumps, and valves ...

US Navy

Nuclear Engineer

Canyon Lake, CA

$96.80K - $115.90K/yr

Job Title: Nuclear Engineer (Naval Reactors Engineer) Category / Component: Officer • Active ... physics, materials development, component design for steam generators, pumps, and valves ...

US Navy

Nuclear Engineer

Nuevo, CA

$101K - $121K/yr

Job Title: Nuclear Engineer (Naval Reactors Engineer) Category / Component: Officer • Active ... physics, materials development, component design for steam generators, pumps, and valves ...

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All JobsPhysics Engineer JobsPhysics Engineer Jobs in Riverside, CA

Physics Engineer information

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$26

$55

$80

How much do physics engineer jobs pay per hour?

As of May 30, 2026, the average hourly pay for physics engineer in Riverside, CA is $55.95, according to ZipRecruiter salary data. Most workers in this role earn between $45.14 and $64.95 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Physics Engineer, and why are they important?

To thrive as a Physics Engineer, you need a strong background in physics, mathematics, and engineering principles, typically supported by a relevant bachelor's or master's degree. Familiarity with simulation software (such as COMSOL or ANSYS), laboratory instrumentation, and data analysis tools is commonly required in this role. Problem-solving ability, analytical thinking, and effective teamwork are standout soft skills for Physics Engineers. These skills and qualifications are crucial for designing, testing, and implementing innovative solutions to complex technical challenges in research and industry.

How does a Physics Engineer typically collaborate with multidisciplinary teams during project development?

Physics Engineers often work alongside electrical, mechanical, and software engineers, as well as researchers and project managers, to develop innovative solutions. Collaboration usually involves sharing experimental data, integrating physics-based models with engineering designs, and participating in regular team meetings to align goals and troubleshoot challenges. Effective communication and a willingness to translate complex physical concepts into practical applications are key to ensuring project success and fostering a productive team environment.

What does a Physics Engineer do?

A Physics Engineer applies principles of physics and engineering to design, develop, and improve products, processes, or technologies. They often work in industries such as aerospace, electronics, energy, and manufacturing, using their expertise to solve complex technical problems. Their responsibilities can include conducting experiments, modeling physical systems, analyzing data, and collaborating with multidisciplinary teams to bring innovative solutions from concept to reality. Physics Engineers bridge the gap between theoretical science and practical engineering applications.

What is the difference between Physics Engineer vs Mechanical Engineer?

AspectPhysics EngineerMechanical Engineer
Required CredentialsBachelor's or Master's in Physics, Engineering, or related fieldsBachelor's or Master's in Mechanical Engineering
Work EnvironmentResearch labs, R&D departments, technology firmsManufacturing, design firms, automotive, aerospace
Industry UsageHigh-tech industries, research institutions, defenseManufacturing, product design, energy sectors

Physics Engineers focus on applying physics principles to develop new technologies and conduct research, often working in labs or R&D settings. Mechanical Engineers design, analyze, and manufacture mechanical systems, working in industries like automotive, aerospace, and manufacturing. While both roles require strong engineering fundamentals, Physics Engineers tend to emphasize research and theoretical applications, whereas Mechanical Engineers focus on practical design and production.

What are the most commonly searched types of Physics Engineer jobs in Riverside, CA? The most popular types of Physics Engineer jobs in Riverside, CA are:
What job categories do people searching Physics Engineer jobs in Riverside, CA look for? The top searched job categories for Physics Engineer jobs in Riverside, CA are:
What cities near Riverside, CA are hiring for Physics Engineer jobs? Cities near Riverside, CA with the most Physics Engineer job openings:
Physics Engineer jobs near you

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

Barupon LLC

Irvine, CA • On-site

Full-time

Posted 8 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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