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Senior Radiant Nuclear Jobs (NOW HIRING)

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 Controls Systems 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 Senior Controls Systems Engineer to lead the design ...

Radiant

Senior Mechanisms Engineer

El Segundo, CA · On-site

$133K - $184K/yr

Radiant's unique, practical approach to nuclear development leverages modern software engineering ... About the Role Radiant is seeking a highly motivated Senior Mechanisms Engineer to design and ...

Radiant Industries

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

Senior Equipment Engineer

El Segundo, CA · On-site

$133K - $184K/yr

Radiant's unique, practical approach to nuclear development leverages modern software engineering ... About the Role Radiant is seeking a highly motivated Senior Equipment Engineer who will be working ...

Radiant

Senior Structures Engineer

El Segundo, CA · On-site

$133K - $184K/yr

Radiant's unique, practical approach to nuclear development leverages modern software engineering ... About the Role Radiant is seeking a highly motivated Senior Structures Engineer to design and ...

Radiant Industries

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 Structural Engineer

El Segundo, CA · On-site

$133K - $184K/yr

Radiant's unique, practical approach to nuclear development leverages modern software engineering ... About the Role Radiant is seeking a highly motivated Senior Structural Engineer to design and ...

Radiant

Senior Manufacturing Engineer

El Segundo, CA · On-site

$133K - $184K/yr

Radiant's unique, practical approach to nuclear development leverages modern software engineering ... About the Role Radiant is seeking a highly motivated Senior Manufacturing Engineer who will be ...

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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 27, 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, 84% Full Time, 7% Part Time, and 8% 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 Thermal Modeling Engineer

Senior Thermal Modeling Engineer

Radiant

El Segundo, CA • On-site

$139K - $224K/yr

Full-time

Medical, Dental, Vision, Life, PTO

Posted 19 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 Thermal Modeling Engineer with expertise in CFD and thermal FEA modeling. You will design, develop and implement simulations for the Kaleidos microreactor to ensure high fidelity, reliability, and safety of our systems. You'll work on cutting edge technical problems for a high temperature gas reactor that inform decisions across reactor systems, cooling systems, shielding, and more. You will have an opportunity to work in an interdisciplinary environment and drive milestones forward to unlock commercialization of the first mass-produced nuclear reactor.
Responsibilities & Duties:
  • Own and execute thermal CFD analysis to evaluate design and performance of Kaleidos reactor systems.
  • Develop and implement solutions to model turbulent flow, heat transfer, and multi-physics interactions.
  • Identify and implement CFD simulation best practices.
  • Build automated workflows to expand simulation capabilities, accuracy, and efficiencies
  • Collaborate across teams and disciplines to support design of reduced order analysis methods.

Required Qualifications & Skills:
  • Bachelor's degree in engineering, physics, or similar field from an accredited institution.
  • 5+ years of relevant industry experience.
  • 5+ years experience with STAR-CCM+, Ansys Fluent, or other commercial CFD code.
  • Proficiency with CAD software (Siemens NX).
  • Mastery of finite element and computational fluid dynamics modeling principles and methods.
  • Experience communicating and distilling information with cross-functional teams.

Desired Qualifications & Skills:
  • Experience with radiation heat transport modeling.
  • Knowledge of nuclear reactor design.
  • 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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