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Radiation Shielding Engineer Jobs (NOW HIRING)

Radiant

Nuclear Engineer

El Segundo, CA · On-site

$106K - $146K/yr

This may include nuclear engineering areas such as radiation shielding, criticality safety, accident dose consequence, reactor physics modeling and design, transient analysis, and radiation detection.

Actalent

Project Manager

Manhattan, NY

... engineering, and construction activities. * Oversee the integration and installation of radiation shielding systems, imaging equipment, and other specialty installations for MRI, CT, LINAC, and ...

Actalent

Project Manager

Manhattan, NY

... engineering, and construction activities. * Oversee the integration and installation of radiation shielding systems, imaging equipment, and other specialty installations for MRI, CT, LINAC, and ...

Niowave Inc.

Nuclear Engineer

Lansing, MI

$89K - $107K/yr

Nuclear Engineer Who we are... We are a team of scientists, engineers, technicians, and innovators ... Radiation shielding * Radioactive material handling * Heat transfer and fluid flow * Radiation ...

Oklo

Hot Cell Design Engineer

Santa Clara, CA · On-site +1

Position Description: As a Hot Cell Design Engineer at Oklo, you will help shape a highly ... Work with radiation modeling and safety analysis specialists to develop shielding requirements and ...

Actalent

Construction Superintendent

Manhattan, NY

Plan, coordinate, and supervise the installation of radiation shielding systems, including lead ... Exposure to design-build construction services integrating architecture, engineering, and physics ...

New

Actalent

Construction Superintendent

Manhattan, NY

Plan, coordinate, and supervise the installation of radiation shielding systems, including lead ... Exposure to design-build construction services integrating architecture, engineering, and physics ...

New

Oklo

Hot Cell Design Engineer

Santa Clara, CA · On-site +1

Position Description: As a Hot Cell Design Engineer at Oklo, you will help shape a highly ... Work with radiation modeling and safety analysis specialists to develop shielding requirements and ...

Deep Fission, Inc

Nuclear Engineer II, Core Design

Radiation shielding design and analysis. * Nuclear fuel analysis and qualification. * Criticality ... Other areas of nuclear engineering or nuclear physics relevant to the design and analysis of light ...

Antares

Senior Nuclear Engineer

Los Angeles, CA · On-site

$150K - $185K/yr

Deep understanding of reactor shielding design, radiation transport analysis, and variance ... Strong systems engineering mindset with the ability to work effectively across disciplinary ...

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All JobsRadiation Shielding Engineer Jobs

Radiation Shielding Engineer information

See salary details

$81.5K

$118.4K

$161K

How much do radiation shielding engineer jobs pay per year?

As of Jul 3, 2026, the average yearly pay for radiation shielding engineer in the United States is $118,363.00, according to ZipRecruiter salary data. Most workers in this role earn between $90,500.00 and $156,000.00 per year, depending on experience, location, and employer.

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

To thrive as a Radiation Shielding Engineer, you need a solid background in physics, mathematics, and engineering principles, usually supported by a degree in nuclear, mechanical, or health physics engineering. Familiarity with Monte Carlo simulation software, radiation transport codes (such as MCNP or FLUKA), and relevant safety regulations is typically required. Strong analytical thinking, attention to detail, and effective communication are standout soft skills in this role. These competencies are vital for designing safe environments, ensuring regulatory compliance, and effectively conveying complex technical information.

What is a Radiation Shielding Engineer?

A Radiation Shielding Engineer is a specialized professional who designs and implements protective barriers to shield people, equipment, and the environment from harmful ionizing radiation. They work in industries such as nuclear power, medical imaging, and research laboratories to ensure that radiation exposure stays within safe limits. Their responsibilities include analyzing radiation levels, selecting appropriate materials for shielding, and ensuring compliance with safety regulations. Radiation Shielding Engineers play a vital role in protecting public health and safety where radiation is present.

What are some common challenges faced by Radiation Shielding Engineers when designing protective barriers for new facilities?

Radiation Shielding Engineers often encounter challenges such as balancing strict regulatory requirements with practical construction limitations and budget constraints. They must accurately model radiation sources and interactions with various materials, which requires a strong understanding of both physics and engineering software. Collaboration with architects, health physicists, and construction teams is crucial to ensure that shielding designs are both effective and feasible. Staying updated with evolving safety standards and integrating new technologies can also present ongoing professional challenges.

What is the difference between Radiation Shielding Engineer vs Nuclear Safety Engineer?

AspectRadiation Shielding EngineerNuclear Safety Engineer
CredentialsEngineering degree, certifications in radiation safetyEngineering or science degree, nuclear safety certifications
Work EnvironmentResearch labs, nuclear power plants, medical facilitiesNuclear plants, regulatory agencies, safety analysis environments
Industry UsageDesigning shielding for radiation protectionEnsuring nuclear plant safety and compliance

Radiation Shielding Engineers focus on designing and implementing shielding solutions to protect against radiation exposure, often working in medical, research, or nuclear power settings. Nuclear Safety Engineers concentrate on maintaining safety standards, risk assessments, and regulatory compliance within nuclear facilities. While both roles require knowledge of radiation and safety protocols, their primary responsibilities and work environments differ.

More about Radiation Shielding Engineer jobs
What cities are hiring for Radiation Shielding Engineer jobs? Cities with the most Radiation Shielding Engineer job openings:
What states have the most Radiation Shielding Engineer jobs? States with the most job openings for Radiation Shielding Engineer jobs include:
What job categories do people searching Radiation Shielding Engineer jobs look for? The top searched job categories for Radiation Shielding Engineer jobs are:
Radiation Shielding Engineer jobs near you
Infographic showing various Radiation Shielding Engineer job openings in the United States as of June 2026, with employment types broken down into 100% Full Time. Highlights an 99% Physical, and 1% Remote job distribution, with an average salary of $118,363 per year, or $56.9 per hour.
Nuclear Engineer

Nuclear Engineer

Radiant

El Segundo, CA • On-site

$106K - $146K/yr

Full-time

Medical, Dental, Vision, Life, PTO

Posted 4 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 highly motivated Nuclear Engineer responsible for developing nuclear engineering solutions for our Kaleidos microreactor. This may include nuclear engineering areas such as radiation shielding, criticality safety, accident dose consequence, reactor physics modeling and design, transient analysis, and radiation detection. You will lead and own nuclear engineering initiatives and studies, strategic direction, and work closely with a collaborative nuclear and engineering team in a fast-paced startup environment. The ideal candidate is passionate about advanced reactor design, detail-oriented, effectively communicates, and a tenacity to solve interesting technical challenges.
Responsibilities & Duties :
  • Ownership of Nuclear design and analysis, examples include:
    • Shielding: Operational dose and shutdown activation analysis, waste categorization, and alignment of shielding design to customer and regulatory requirements.
    • Neutronics: Analysis of ex-vessel reactor fluxes and energy deposition, criticality safety, and verification and validation (V&V) of the nuclear toolbox and reactor models.
    • Accident and Dose Consequence: Radiological dose consequence from different accident scenarios for the Kaleidos demonstration and production units.
    • Transient Analysis: Run coupled neutronics and thermal calculations to further understanding of the reactor dynamics of the Kaleidos reactor design.
  • Collect requirements, provide expertise and feedback to engineers in other functional areas via clear, constructive communication.
  • Other nuclear design and analysis duties as assigned.

Required Qualifications & Skills:
  • Bachelor's degree in nuclear engineering or equivalent degree from an accredited institution.
  • 1-2+ years of nuclear engineering industry experience (MS equivalent to 2 yrs).
  • Experience with radiation transport methods, including with codes such as MCNP/OpenMC/Serpent.
  • Proficient in at least one of the following programming languages: Python, C++, C#, FORTRAN, or another scientific computing language.
  • Basic knowledge of thermal hydraulic principles.
  • Self-motivated with strong organizational, written, and oral communication skills.
  • Experience working in an engineering organization and developing high-quality work.

Desired Qualifications & Skills
  • Experience with variance reduction techniques and associated software (Attila4MC and/or ADVANTG), is a plus.
  • Strong experience with OpenMC, Serpent, MCNP, Attila4MC, MOOSE, RELAP, Pronghorn, GRIFFIN, or other similar nuclear software packages.
  • Competency in distributed software development processes and high-performance computing environments.
  • Familiarity with CAD design software (NX, SolidWorks, and/or SpaceClaim), is a plus.
  • Familiarity with dose consequence methods and software such as MAACS or NRC-RADTRAN.
  • At least 1 year of software development or scripting experience.
  • Hands-on experience designing hardware and/or performing tests.

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.
Unfortunately, we are unable to provide visa sponsorship at this time.
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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