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Entry Level Nuclear Criticality Safety Engineer Jobs

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Entry Level Nuclear Criticality Safety Engineer information

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How much do entry level nuclear criticality safety engineer jobs pay per year?

As of Jun 14, 2026, the average yearly pay for entry level nuclear criticality safety engineer in the United States is $154,474.00, according to ZipRecruiter salary data. Most workers in this role earn between $146,000.00 and $161,000.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as an Entry Level Nuclear Criticality Safety Engineer, and why are they important?

To thrive as an Entry Level Nuclear Criticality Safety Engineer, a solid background in nuclear engineering, physics, or a related field—often with a relevant bachelor's degree—is essential. Familiarity with nuclear safety codes, Monte Carlo simulation software (like MCNP), and regulatory standards is commonly required. Strong analytical thinking, attention to detail, and effective communication help individuals excel in collaborative and safety-focused environments. These skills and qualifications are vital to ensure accurate risk assessments, regulatory compliance, and the prevention of criticality accidents in nuclear facilities.

What does an Entry Level Nuclear Criticality Safety Engineer do?

An Entry Level Nuclear Criticality Safety Engineer assists in evaluating and controlling nuclear processes to prevent accidental criticality events, which can release dangerous levels of radiation. They help develop procedures, perform safety analyses, and review facility operations to ensure compliance with nuclear safety regulations. Typically, they work under the supervision of experienced engineers while gaining hands-on experience with nuclear materials and safety systems. Their role is essential for maintaining the safety of nuclear facilities and protecting workers and the environment.

What is the difference between Entry Level Nuclear Criticality Safety Engineer vs Entry Level Nuclear Safety Analyst?

AspectEntry Level Nuclear Criticality Safety EngineerEntry Level Nuclear Safety Analyst
CredentialsBachelor's in nuclear engineering or related field; certifications like NEA or NQA preferredBachelor's in nuclear, mechanical, or safety engineering; certifications vary
Work EnvironmentDesign review, safety analysis, compliance in nuclear facilitiesSafety assessments, incident analysis, regulatory reporting in nuclear plants
Employer & Industry UsageNuclear power plants, research reactors, DOE facilitiesNuclear power plants, regulatory agencies, consulting firms

While both roles focus on nuclear safety, the Entry Level Nuclear Criticality Safety Engineer specializes in preventing nuclear chain reactions, whereas the Entry Level Nuclear Safety Analyst concentrates on overall safety assessments and compliance. Both positions require similar educational backgrounds and often work within the same industry environments, but their specific responsibilities differ based on safety focus areas.

What typical challenges might an entry level Nuclear Criticality Safety Engineer face in their first year on the job?

As an entry level Nuclear Criticality Safety Engineer, you may encounter challenges such as adapting to complex regulatory requirements, mastering technical safety analysis software, and understanding the intricacies of nuclear facility operations. You’ll also need to develop effective communication skills to collaborate with multidisciplinary teams and clearly present safety recommendations. Learning how to balance thorough risk assessment with practical operational constraints is a key part of the role’s early learning curve.
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Infographic showing various Entry Level Nuclear Criticality Safety Engineer job openings in the United States as of June 2026, with employment types broken down into 89% Full Time, and 11% Part Time. Highlights an 100% In-person job distribution, with an average salary of $154,474 per year, or $74.3 per hour.
Nuclear Criticality Safety Graduate Student

Nuclear Criticality Safety Graduate Student

Los Alamos National Laboratory

Los Alamos, NM

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 5 days ago


Los Alamos National Laboratory rating

9.2

Company rating: 9.2 out of 10

Based on 32 frontline employees who took The Breakroom Quiz

7th of 103 rated laboratories


Job description

What You Will Do
The Nuclear Criticality Safety (NCS) Division at Los Alamos National Laboratory (LANL) seeks a graduate research assistant (GRA) to support ongoing efforts in criticality safety analyses. The selected student will contribute to the development of a technical document evaluating the use of epoxy in metallography operations within PF-4. This work will involve analyzing the reactivity of small epoxy-mounted samples using computational tools, including MCNP, high-performance computing clusters, and data analysis software. The student will assess the extent to which such samples fall within traditionally considered material limits in PF-4 environments and identify any associated criticality safety concerns. The project will provide opportunities to engage with real-world nuclear facility operations, including entering nuclear facilities and observing metallography processes firsthand. The successful candidate will gain experience in applied nuclear safety analysis while working both independently and collaboratively with NCS staff to support mission-critical research and safety objectives at LANL.

What You Need
Minimum Job Requirements:
  • Must be accepted into an accredited post-secondary institution
  • Must enroll in and receive credit for at least six credit hours each semester, or full-time equivalent
  • Must initially have and maintain a cumulative GPA of 3.2/4.0
  • Students in their dissertation/thesis phase must enroll in at least one credit hour until they graduate, or in
  • a zero credit "continuous enrollment" place holder
  • Excellent written and oral communication skills.
  • Ability to work both independently and collaboratively.

Education/Experience:
Graduate
  • Must be enrolled (6 semester credit hours or full-time equivalent) in an accredited, degree-granting graduate level program (or international equivalent)
  • Must currently have and maintain a cumulative GPA of at least 3.2 on a 4.0 scale (or equivalent).

Work Location: The work location for this position is onsite and located in Los Alamos, NM. All work locations are at the discretion of management.
Note to Applicants:
Due to federal restrictions contained in the current National Defense Authorization Act, citizens of the People's Republic of China-including the special administrative regions of Hong Kong and Macau-as well as citizens of the Islamic Republic of Iran, the Democratic People's Republic of Korea (North Korea), and the Russian Federation, who are not Lawful Permanent Residents ("green card" holders) are prohibited from accessing facilities that support the mission, functions, and operations of national security laboratories and nuclear weapons production facilities, which includes Los Alamos National Laboratory.
Where You Will Work
Located in beautiful northern New Mexico, Los Alamos National Laboratory (LANL) is a multidisciplinary research institution engaged in strategic science on behalf of national security. Our generous benefits package includes:
  • PPO or High Deductible medical insurance with the same large nationwide network
  • Dental and vision insurance
  • Free basic life and disability insurance
  • Paid childbirth and parental leave
  • Award-winning 401(k) (6% matching plus 3.5% annually)
  • Learning opportunities and tuition assistance
  • Flexible schedules and time off (PTO and holidays)
  • Onsite gyms and wellness programs
  • Extensive relocation packages (outside a 50 mile radius)
Additional Details
Directive 206.2 - Employment with Triad requires a favorable decision by NNSA indicating employee is suitable under NNSA Supplemental Directive 206.2. Please note that this requirement applies only to citizens of the United States. Foreign nationals are subject to a similar requirement under DOE Order 142.3A.
Clearance: Q (Position will be cleared to this level). Selected applicants will be subject to a background investigation conducted by or on behalf of the Federal Government, and must meet eligibility requirements* for access to classified matter. This position requires a Q clearance, and obtaining such clearance requires US Citizenship except in extremely rare circumstances. Dependent upon the position, additional authorization to access classified information may be required, which may or may not be available to dual citizens. Receipt of a Q clearance and additional access authorization ultimately is a decision of the Federal Government and not of Triad.
*Eligibility requirements: To obtain a clearance, an individual must be at least 18 years of age; U.S. citizenship is required except in very limited circumstances. See DOE Order 472.2 for additional information.
New-Employment Drug Test: The Laboratory requires successful applicants to complete a new-employment drug test and maintains a substance abuse policy that includes random drug testing. Although New Mexico and other states have legalized the use of marijuana, use and possession of marijuana remain illegal under federal law. A positive drug test for marijuana will result in termination of employment, even if the use was pre-offer.
Internal Applicants: Regular appointment employees who have served the required period of continuous service in their current position are eligible to apply for posted jobs throughout the Laboratory. If an employee has not served the required period of continuous service, they may only apply for Laboratory jobs with the documented approval of their Division Leader. Please refer to Policy Policy P701 for applicant eligibility requirements.
Equal Opportunity: Los Alamos National Laboratory is an equal opportunity employer. All employment practices are based on qualification and merit, without regard to protected categories such as race, color, national origin, ancestry, religion, age, sex, gender identity, sexual orientation, marital status or spousal affiliation, physical or mental disability, medical conditions, pregnancy, status as a protected veteran, genetic information, or citizenship within the limits imposed by federal, state, and local laws and regulations. The Laboratory is also committed to making our workplace accessible to individuals with disabilities and will provide reasonable accommodations, upon request, for individuals to participate in the application and hiring process. To request such an accommodation, please send an email to applyhelp@lanl.gov or call (505)-664-6947.

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