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Senior Radiant Nuclear Jobs (NOW HIRING)

Radiant

Senior Nuclear Engineer

El Segundo, CA · On-site

$133K - $184K/yr

About Radiant Radiant is an El Segundo, CA-based startup building the world's first mass-produced ... About the Role Radiant is seeking a driven Senior Nuclear Engineer to join our team! You will own ...

Radiant Industries

Senior Nuclear Engineer

El Segundo, CA · On-site

$133K - $184K/yr

About Radiant Radiant is an El Segundo, CA-based startup building the world's first mass-produced ... About the Role Radiant is seeking a driven Senior Nuclear Engineer to join our team! You will own ...

Radiant

Senior Technical Recruiter

El Segundo, CA · On-site

$115K - $168K/yr

Radiant's unique, practical approach to nuclear development leverages modern software engineering ... Senior Technical Recruiter Radiant is seeking a bold, driven, and hands-on Senior Technical ...

Radiant

Senior Reactor Operations Engineer

El Segundo, CA · On-site

$133K - $184K/yr

Radiant's unique, practical approach to nuclear development leverages modern software engineering ... About the Role We are seeking a Senior Reactor Operations Engineer to design and implement mission ...

Radiant

Senior Reactor Systems Engineer

El Segundo, CA · On-site

$133K - $184K/yr

Radiant's unique, practical approach to nuclear development leverages modern software engineering ... About the Role We are seeking a Senior Reactor Systems Engineer to design and implement mission ...

Radiant

Senior Test Engineer

El Segundo, CA · On-site

$133K - $184K/yr

Radiant's unique, practical approach to nuclear development leverages modern software engineering ... About the Role We are seeking a Senior Test Engineer to design and implement mission-critical ...

Radiant

Senior Electrical Engineer

El Segundo, CA · On-site

$158K - $219K/yr

Radiant's unique, practical approach to nuclear development leverages modern software engineering ... About the Role Radiant is seeking a talented Senior Electrical Engineer to own designs from ...

Radiant

Senior Motor Design Engineer

El Segundo, CA · On-site

$158K - $247K/yr

Radiant's unique, practical approach to nuclear development leverages modern software engineering ... About the Role Radiant is seeking a talented Senior Motor Design Engineer to design and develop an ...

Radiant

Senior Thermal Engineer

El Segundo, CA · On-site

$139K - $224K/yr

Radiant's unique, practical approach to nuclear development leverages modern software engineering ... About the Role Radiant is seeking a driven Senior Thermal Engineer with expertise in CFD and ...

Radiant Industries

Senior Test Engineer

El Segundo, CA · On-site

$133K - $184K/yr

Radiant's unique, practical approach to nuclear development leverages modern software engineering ... About the Role We are seeking a Senior Test Engineer to design and implement mission-critical ...

Radiant

Senior Thermal-Hydraulics Engineer

El Segundo, CA · On-site

$139K - $224K/yr

Radiant's unique, practical approach to nuclear development leverages modern software engineering ... About the Role Radiant is seeking a driven Senior Thermal-Hydraulics Enginee r with expertise in ...

Radiant

Senior Thermal Analyst

El Segundo, CA · On-site

$139K - $224K/yr

Radiant's unique, practical approach to nuclear development leverages modern software engineering ... About the Role Radiant is seeking a driven Senior Thermal Analyst with expertise in CFD and thermal ...

Radiant

Senior Thermal Modeling Analyst

El Segundo, CA · On-site

$139K - $224K/yr

Radiant's unique, practical approach to nuclear development leverages modern software engineering ... About the Role Radiant is seeking a driven Senior Thermal Modeling Analyst with expertise in CFD ...

Radiant

Senior Thermal Modeling Engineer

El Segundo, CA · On-site

$139K - $224K/yr

Radiant's unique, practical approach to nuclear development leverages modern software engineering ... About the Role Radiant is seeking a driven Senior Thermal Modeling Engineer with expertise in CFD ...

Radiant

Senior Power Electronics Engineer

El Segundo, CA · On-site

$158K - $219K/yr

Radiant's unique, practical approach to nuclear development leverages modern software engineering ... About the Role The Senior Power Electronics Engineer will play a pivotal role in the design and ...

Radiant

Senior Manager, Power Systems

El Segundo, CA · On-site

$208K - $284K/yr

Radiant's unique, practical approach to nuclear development leverages modern software engineering ... About the Role Radiant is seeking a talented Senior Manager, Power Systems, to build and lead the ...

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Senior Radiant Nuclear information

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$25K

$80.3K

$163.5K

How much do senior radiant nuclear jobs pay per year?

As of Jul 17, 2026, the average yearly pay for senior radiant nuclear in the United States is $80,287.00, according to ZipRecruiter salary data. Most workers in this role earn between $41,500.00 and $103,000.00 per year, depending on experience, location, and employer.

What does a Senior Radiant Nuclear do?

A Senior Radiant Nuclear is typically a highly experienced professional who specializes in the operation, management, and safety of nuclear reactor systems, particularly those utilizing radiant energy for power generation or research purposes. Their responsibilities include overseeing nuclear facility operations, ensuring compliance with safety protocols, leading technical teams, and troubleshooting complex nuclear systems. They often contribute to the development and implementation of new technologies and procedures to optimize performance and safety. Additionally, they play a key role in training junior staff and supporting regulatory inspections and audits.

What are the key skills and qualifications needed to thrive as a Senior Radiant Nuclear, and why are they important?

To excel as a Senior Radiant Nuclear professional, you typically need advanced knowledge of nuclear physics, radiation safety, and reactor operations, often supported by a relevant engineering or science degree and significant industry experience. Familiarity with nuclear instrumentation, radiation monitoring systems, and compliance with regulatory standards such as NRC or IAEA guidelines is essential. Strong analytical thinking, meticulous attention to detail, and effective leadership are valuable soft skills in this role. These competencies are crucial to ensuring safe, efficient nuclear operations and maintaining strict adherence to safety and regulatory requirements.

What is the difference between Senior Radiant Nuclear vs Radiant Nuclear Technician?

AspectSenior Radiant NuclearRadiant Nuclear Technician
CertificationsRequires advanced certifications and experienceRequires basic nuclear technician certifications
Work EnvironmentSupervisory roles in nuclear facilities, overseeing projectsHands-on technical work in nuclear plants or labs
ResponsibilitiesDesign, oversee, and optimize radiant nuclear systemsOperate and maintain nuclear radiation equipment

Senior Radiant Nuclear professionals typically hold advanced certifications and lead projects, while Radiant Nuclear Technicians focus on technical operations and maintenance. Both roles are essential in nuclear facilities but differ in scope and responsibilities.

What are some common challenges faced by Senior Radiant Nuclear Engineers in coordinating with multidisciplinary teams?

Senior Radiant Nuclear Engineers often work alongside professionals from mechanical, electrical, and safety engineering disciplines. A common challenge is ensuring clear communication of complex nuclear processes and safety protocols to colleagues who may not have specialized nuclear expertise. Additionally, balancing project timelines with strict regulatory requirements can require proactive problem-solving and collaboration. Effective teamwork and leadership skills are crucial for aligning diverse technical perspectives and achieving project goals safely and efficiently.
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Senior Radiant Nuclear jobs near you
Infographic showing various Senior Radiant Nuclear job openings in the United States as of July 2026, with employment types broken down into 1% As Needed, 85% Full Time, 7% Part Time, and 7% Contract. Highlights an 94% Physical, 2% Hybrid, and 4% Remote job distribution, with an average salary of $80,287 per year, or $38.6 per hour.
Senior Nuclear Engineer

Senior Nuclear Engineer

Radiant

El Segundo, CA • On-site

$133K - $184K/yr

Full-time

Medical, Dental, Vision, Life, PTO

Posted 5 days ago

Job description

About Radiant
Radiant is an El Segundo, CA-based startup building the world's first mass-produced, portable nuclear microreactors. The company's first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be transported anywhere power is needed and run for up to 5 years without refueling. Portable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases. Radiant's unique, practical approach to nuclear development leverages modern software engineering to rapidly deliver safe, factory-built microreactors that use existing, well-qualified materials. Founded in 2020, Radiant is on track to test its first reactor at the Idaho National Laboratory this summer, with initial customer deliveries beginning in 2028.
About the Role
Radiant is seeking a driven Senior Nuclear Engineer to join our team! You will own modeling methods and reactor physics calculations of neutronics parameters such as reactivity, kinetics parameters, and energy deposition distributions used within our cutting-edge custom-made Digital Twin simulation software. You'll be responsible for assessing conservatism and verifying assumptions within the modeling methods and documenting all results. Because these methods are pivotal in the safety analysis, you will play a key role in the commercialization of the first mass-produced nuclear reactor.
Responsibilities & Duties:
  • Own modeling methods of core neutronics and reactor physics calculations supporting Radiant's transient safety analyses.
  • Perform calculations of energy deposition distributions, reactivity coefficients, kinetics parameters, and control blade worths to input into Digital Twin models.
  • Verify assumptions and assess conservatism of neutronics models.
  • Document methods for both technical and non-technical audiences.
  • Assist in Verification & Validation (V&V) efforts for the Digital Twin.
  • Review and support other nuclear analyses across the company in reactor physics, shielding, and radiation detection.

Required Qualifications & Skills:
  • Bachelor's degree in nuclear engineering or a similar field from an accredited institution.
  • 4+ years of experience with Monte Carlo nuclear engineering software such as OpenMC, MCNP, Serpent, SCALE, etc.
  • Experience documenting analysis methods and assumptions.
  • Strong programming skills in any language, preferably Python.

Desired Qualifications & Skills:
  • Knowledge and experience in reactor kinetics.
  • Basic knowledge of thermal hydraulic principles.
  • Experience communicating and distilling information with cross-functional teams.
  • Driven, self-motivated, and takes ownership of work end to end.

Additional Requirements:
  • Must be willing to work extended hours and weekends as necessary to accomplish our mission.
  • Must work 100% onsite at El Segundo HQ.
Benefits and Perks
  • Stock: Substantial incentive stock plan for all full-time employees.
  • Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.
  • One Medical: Sponsored memberships for employees and their dependents.
  • Vision: 100% top tier plan coverage + 50% for dependents.
  • Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.
  • Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits.
  • 8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees.
  • Daily catered lunch. Free snacks and drinks.
  • Flexible PTO policy. Remote workday allocation.
  • Company and team-bonding events, happy hours and in-person camaraderie.
  • Beautiful El Segundo headquarters close to the Pacific Ocean.

Total Compensation and Benefits
Radiant compensates people for impact and invests in those who continue to raise the bar. Radiant's new hire compensation package includes base salary, substantial equity grants, and comprehensive health benefits. Total compensation and level are determined through a rigorous evaluation of interview performance, experience, education, and qualifications, and are designed to support continued growth as scope, responsibility, and impact expand at Radiant.
The best of today's advanced reactor builders don't wait for job postings. They join the winning team. If that's you, contact us directly for immediate opportunities: recruiting@radiantnuclear.com.
We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.
This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant's capacity to serve in compliance with U.S. export controls.

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