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Full Time Reactor Physics Jobs (NOW HIRING)

Radiant

Senior Thermal Modeling Analyst

El Segundo, CA · On-site

$139K - $224K/yr

The company's first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be ... Bachelor's degree in engineering, physics, or similar field from an accredited institution. * 5+ ...

Radiant

Senior Thermal Modeling Engineer

El Segundo, CA · On-site

$139K - $224K/yr

The company's first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be ... Bachelor's degree in engineering, physics, or similar field from an accredited institution. * 5+ ...

Radiant

Senior Thermal-Hydraulics Engineer

El Segundo, CA · On-site

$139K - $224K/yr

The company's first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be ... Bachelor's degree in engineering, physics, or similar field from an accredited institution. * 5+ ...

Radiant

Director, Nuclear Engineering

El Segundo, CA · On-site

$173K - $237K/yr

... physics from an accredited institution * Minimum 10 years of experience managing a team in reactor ... Substantial incentive stock plan for all full-time employees. * Medical: 100% up to base silver ...

Radiant

Engineering Manager, Electronics

El Segundo, CA · On-site

$208K - $284K/yr

The company's first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be ... Master's degree in electrical engineering, physics, aerospace, mechanical, nuclear engineering, or ...

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Full Time Reactor Physics information

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How much do full time reactor physics jobs pay per hour?

As of Sep 9, 2026, the average hourly pay for full time reactor physics in the United States is $20.06, according to ZipRecruiter salary data. Most workers in this role earn between $12.50 and $25.48 per hour, depending on experience, location, and employer.

What is the difference between Full Time Reactor Physics vs Reactor Operations Technician?

AspectFull Time Reactor PhysicsReactor Operations Technician
Required CredentialsAdvanced degrees in nuclear engineering or physics, certifications in reactor safetyTechnical diploma or associate degree, on-the-job training
Work EnvironmentResearch facilities, nuclear power plants, analytical labsControl rooms, plant floors, operational settings
Employer & Industry UsageResearch institutions, nuclear power industry, government agenciesNuclear power plants, operational support teams

Full Time Reactor Physics roles focus on analyzing reactor behavior, safety analysis, and core design, often requiring advanced degrees. Reactor Operations Technicians handle day-to-day plant operations, monitoring systems, and safety procedures. While both work within the nuclear industry, their responsibilities, credentials, and work environments differ significantly.

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Full Time Reactor Physics jobs near you
Infographic showing various Full Time Reactor Physics job openings in the United States as of September 2026, with employment types broken down into 1% As Needed, 76% Full Time, 21% Part Time, 1% Contract, and 1% Nights. Highlights an 76% Physical, 2% Hybrid, and 22% Remote job distribution, with an average salary of $41,731 per year, or $20.1 per hour.

Nuclear Engineer

Idaho Falls, ID • On-site

Boston Government Services, LLC
Business Management Consulting • 51 - 200 employees
Learn more about Boston Government Services, LLCexternal

$94K - $113K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 21 days ago

Key responsibilities

  • Perform criticality safety assessments by designing, evaluating, and reviewing systems and processes to ensure safety standards are met.

  • Utilize criticality safety codes and software tools, such as MCNP, SCALE, and KENO, for radiation transport and safety analysis.

  • Conduct safety evaluations and risk assessments related to nuclear processes like fuel fabrication, enrichment, transportation, and storage.

Job description

Boston Government Services, LLC. (BGS) has created this Evergreen Talent Pool post for gathering qualified candidates for a position relating to Nuclear Engineer to support our clients in Oak Ridge, TN, and Idaho Falls, ID. 


BGS is an engineering, technology, and security firm helping to advance missions of national importance for government programs, national laboratories, national security facilities, nuclear operations, and complex projects. We support clients at every stage, from strategic planning and program management to the execution of engineering and technical activities. We work to attract and retain the best talent because the best talent delivers the best results for our clients. Our capabilities are based on our experience in complex, secure, and highly regulated environments. We leverage our experience and capabilities to provide mission-driven solutions tuned to our client's mission needs and strategic direction.


Work that Matters. People that Matter More. At BGS, we believe meaningful work starts with great people. We foster a culture built on respect, collaboration, and accountability—where employees are empowered to contribute ideas, grow professionally, and make an impact. We care about our employees’ well-being through competitive benefits, clear expectations, and an environment that values both excellence and connection.


If you align with BGS’ company values and culture, we would love for you to explore opportunities to join our growing team by checking out the job description below!


Responsibilities:

  • Proficiency with criticality safety codes and software tools, such as MCNP (Monte Carlo N-Particle), SCALE, KENO, or similar computational tools used for radiation transport and criticality safety analysis.
  • Hands-on experience with criticality safety assessments, including designing, evaluating, and reviewing systems and processes to ensure they meet safety standards
  • Experience in performing safety evaluations and risk assessments related to nuclear processes, such as fuel fabrication, enrichment, transportation, and storage.


Requirements:

  • Bachelor’s Degree in Nuclear Engineering, Mechanical Engineering, Chemical Engineering, or a related field plus 5-10 years of direct experience required, or an MS with 3-7 years' experience.
  • Successful drug screening.
  • Must be eligible to obtain and maintain a security or clearance badge.
  • Must be a U.S. Citizen.


Preferred Qualifications: 

  • BA/BS Degree in Nuclear Engineering, Mechanical Engineering, Chemical Engineering, or a related field, plus 18 years of direct experience required, or an MS with 15 years' experience.
  • Master’s degree or Ph.D. in Nuclear Engineering or a related discipline, especially with a focus in reactor physics, neutron transport, or criticality safety.
  • Familiarity with nuclear fuel cycle operations, such as enrichment, reprocessing, or fuel fabrication.


Location/Work Arrangement:

  • This position is available in Oak Ridge, TN, Idaho Falls, ID, and remote.
  • Schedule is full-time, Monday - Friday 40 hours per week.


Benefits:

BGS offers a competitive total compensation package to eligible employees. Benefits include Health, Dental, Vision, Life Insurance, Paid Vacation, 401K, Long and Short-Term Disability.


EEO:

BGS is an Equal Opportunity/Affirmative Action employer. All qualified applicants are encouraged to apply and will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, or protected veteran status.


Exclusive Agreement Disclaimer:

BGS has standing contracts with federal agencies throughout the United States. We require an affirmative exclusive agreement to represent all candidates to our clients. By submitting this application, you are consenting to allow BGS to represent you as a candidate for the role in which you are applying.


This position is available in Oak Ridge, TN, Idaho Falls, ID, and remote.
Schedule is full-time, Monday - Friday 40 hours per week.

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