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Permanent Reactor Physics Jobs (NOW HIRING)

Valar Atomics

Health Physicist

Orangeville, UT · On-site

You know that in Health Physics, accuracy is everything. You take pride in precise calculations and ... DOE/Reactor Experience: Experience at a DOE or NRC-licensed reactor facility or in the Naval ...

Valar Atomics

Health Physicist

Orangeville, UT

You know that in Health Physics, accuracy is everything. You take pride in precise calculations and ... DOE/Reactor Experience: Experience at a DOE or NRC-licensed reactor facility or in the Naval ...

Protingent

Senior Safety Analysis Engineer

Bellevue, WA · On-site

$69 - $115/hr

Knowledgeable of nuclear reactor core physics such as neutron transport theory and reactivity ... Citizen, U.S. Legal Permanent Resident, or of a protected person status Benefits Package:

Radiant

Senior Controls Systems Engineer

El Segundo, CA · On-site

$158K - $219K/yr

The company's first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be ... Experience with permanent magnet synchronous motor control, including FOC, VSM, and sensorless ...

Protingent

Senior Safety Analysis Engineer

Bellevue, WA · On-site

$69 - $115/hr

Knowledgeable of nuclear reactor core physics such as neutron transport theory and reactivity ... Legal Permanent Resident, or a protected person status Benefits Package: Protingent offers ...

Protingent

Senior Safety Methods Engineer

Bellevue, WA · On-site

$37 - $74/hr

... level physics) into existing analysis frameworks. * Identify modeling gaps and support method ... Strong foundation in thermal fluids and reactor system behavior, including complex thermal ...

Valar Atomics

CFD Analyst

Hawthorne, NV

In this role, you will develop high-fidelity CFD models that support reactor design optimization ... S. citizen or lawful permanent resident (green card holder)

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Permanent Reactor Physics information

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$46.9K

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How much do permanent reactor physics jobs pay per year?

As of Jul 8, 2026, the average yearly pay for permanent reactor physics in the United States is $46,902.00, according to ZipRecruiter salary data. Most workers in this role earn between $43,500.00 and $50,500.00 per year, depending on experience, location, and employer.

Can you work at a nuclear power plant with a physics degree?

A physics degree can qualify you for roles such as reactor physicist at a nuclear power plant, especially when combined with specialized training or certifications in nuclear engineering or reactor operations. Relevant skills include understanding nuclear reactions, radiation safety, and using simulation tools, and some positions may require security clearances or licensing. Practical experience or additional education in nuclear engineering can enhance employment prospects in this field.

What is the difference between Permanent Reactor Physics vs Reactor Operations?

AspectPermanent Reactor PhysicsReactor Operations
CredentialsDegree in nuclear engineering or physics, certifications in reactor physicsTraining in reactor operation, certifications like NRC licenses
Work EnvironmentResearch labs, design facilities, regulatory agenciesPower plants, operational control rooms
Industry UsageDesign, safety analysis, researchDay-to-day plant operation, safety monitoring

Permanent Reactor Physics focuses on reactor design, safety analysis, and research, requiring specialized knowledge in physics and engineering. Reactor Operations involves managing the daily functions of running a nuclear reactor, emphasizing operational procedures and safety protocols. Both roles are essential in the nuclear industry but differ in focus and responsibilities.

What jobs can I get with a nuclear physics degree?

A nuclear physics degree can lead to careers such as reactor physicist, nuclear engineer, health physicist, or research scientist. These roles often involve working in nuclear power plants, research laboratories, or government agencies, and may require knowledge of radiation safety, computational modeling, and specialized software tools.

What is the highest paying physics job?

In the field of physics, roles such as nuclear reactor physicists, especially those working in high-level research, energy, or defense sectors, tend to have the highest salaries. These positions often require advanced degrees, specialized skills in reactor modeling and simulation, and security clearances, leading to compensation that surpasses many other physics-related jobs.

What is the salary of a nuclear physicist?

A nuclear physicist's salary typically ranges from $70,000 to $130,000 annually, depending on experience, education, and location. Those working in research or industry may earn higher salaries, especially with advanced degrees and specialized skills in reactor physics or radiation safety.
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Permanent Reactor Physics jobs near you

Nuclear Engineer I/II (Reactor Design)

Fissionaire

Madison, WI

$99K - $118K/yr

Full-time

Posted 22 days ago

Job description

As an emerging leader in nuclear engineering, our startup is developing revolutionary reactor technology to secure safe and abundant energy for future generations.  We are seeking a highly skilled entry-level Nuclear Engineer I/II to join our dynamic team and contribute to the design and development of next-generation nuclear reactors.


The Nuclear Engineer I/II will contribute to the design, analysis, and optimization of advanced nuclear reactor systems. The ideal candidate will have a strong background in nuclear engineering, proficiency with industry-standard design software, and a proactive, self-starting attitude. This role requires innovative thinking, technical expertise, and a commitment to advancing safe and sustainable nuclear energy solutions.

Key responsibilities
  • Design and develop nuclear reactor systems, including core design, thermal-hydraulics, and safety systems, ensuring compliance with regulatory standards.
  • Perform simulations and analyses to optimize reactor performance, safety, and efficiency using industry-standard software tools.
  • Collaborate with multidisciplinary teams, including mechanical engineers, materials scientists, and safety analysts, to integrate reactor designs into broader systems.
  • Conduct risk assessments and safety analyses to ensure designs meet stringent nuclear safety requirements.
  • Prepare technical reports, design documentation, and presentations for internal stakeholders and regulatory bodies.
  • Stay updated on advancements in nuclear technology, materials, and regulations to incorporate cutting-edge solutions into designs.
  • Participate in project planning and scheduling to ensure timely delivery of design milestones.
  • Contribute to research and development initiatives for innovative reactor concepts.  
qualifications
  • Master’s degree in Nuclear Engineering or a related field. Ph.D. preferred but not required.
  • Minimum of 1-2 years of experience in nuclear reactor design, analysis, or related fields within industry or in academic work.
  • Proficiency with nuclear design and analysis software, such as MCNP, SCALE, RELAP5, COMSOL, MOOSE, GOTHIC etc.
  • Familiarity with CAD software for reactor component design.
  • Proficiency in programming languages for data analysis, scripting, or automation of design processes.
  • Knowledge of nuclear physics, neutronics, thermal-hydraulics, and reactor safety principles.
  • Experience with Molten Salt Reactor design preferred.
  • Demonstrated ability to work independently, take initiative, and drive projects to completion with minimal supervision.
  • Excellent written and verbal communication skills for technical documentation and cross-functional collaboration.
  • Familiarity with nuclear regulatory frameworks and safety standards.
  • Knowledge of materials science, particularly related to radiation-resistant materials and high-temperature applications.
  • Familiarity with risk assessments and analysis (PRA, FMEA, PIRT etc.) preferred
  • Familiarity with computational fluid dynamics (CFD) for thermal-hydraulic analysis preferred.
  • U.S. citizenship or permanent residency required.
What we offer
  • Competitive salary with equity options
  • Comprehensive benefits, holiday and PTO schedule
  • Opportunity to shape foundational operations in a groundbreaking nuclear startup.

Fissionaire’s technology is subject to U.S. export control regulations, which require the company to review applicants’ eligibility based on their citizenship or residency status. As part of the application process, candidates will be asked to indicate whether they are a U.S. citizen, green card, lawful permanent resident, asylee, or refugee resident to support this review. Because government authorization timelines can vary, Fissionaire is unable to consider alternate resident statuses where required approvals may not be obtainable within a timeframe that meets business needs.

Fissionaire is an Equal Opportunity Employer that does not discriminate on the basis of actual or perceived race, colour, creed, religion, national origin, ancestry, citizenship status, age, sex or gender (including pregnancy, childbirth, pregnancy-related conditions, and lactation), gender identity or expression (including transgender status), sexual orientation, marital status, family or relationship structure, military service and veteran status, physical or mental disability, genetic information, gender identity, or any other characteristic protected by applicable federal, state, or local laws and ordinances. Fissionaire’s management team is dedicated to this policy with respect to recruitment, hiring, placement, promotion, transfer, training, compensation, benefits, employee activities, access to facilities and programs, and general treatment during employment.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.