1

Mcnp Jobs (NOW HIRING)

Senior Nuclear Engineer

Austin, TX · On-site

$103K - $142K/yr

TRACE, MELCOR, MCNP, VERA, SCALE, SERPENT. * Demonstrated experience performing and reviewing complex engineering calculations. * Strong technical writing and communication skills, with the ability ...

Nuclear Engineer

El Segundo, CA · On-site

$106K - $146K/yr

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 ...

Senior Nuclear Engineer

Austin, TX

$103K - $142K/yr

TRACE, MELCOR, MCNP, VERA, SCALE, SERPENT * Demonstrated experience performing and reviewing complex engineering calculations * Strong technical writing and communication skills, with the ability to ...

Senior Nuclear Engineer

Austin, TX · On-site

$103K - $142K/yr

TRACE, MELCOR, MCNP, VERA, SCALE, SERPENT * Demonstrated experience performing and reviewing complex engineering calculations * Strong technical writing and communication skills, with the ability to ...

Nuclear Engineer

El Segundo, CA · On-site

$106K - $146K/yr

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 ...

Perform engineering calculations and analysis using industry-standard methods and simulation tools (e.g., NRCDose, SCALE, RADTRAD, MCNP, and ADVANTG) with little to no supervision. * Develop ...

Nuclear Engineer I/II

Los Angeles, CA · On-site

$120K - $160K/yr

Familiarity with neutron transport software (MCNP, Serpent, SCALE) Preferred Skills & Experience: * Familiarity with Python or similar programming language * Coursework or internships involving ...

Showing results 41-60

Mcnp information

See salary details

$69.5K

$145.6K

$235K

How much do mcnp jobs pay per year?

As of Aug 13, 2026, the average yearly pay for mcnp in the United States is $145,640.00, according to ZipRecruiter salary data. Most workers in this role earn between $111,500.00 and $167,000.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive in the MCNP position, and why are they important?

To thrive as an MCNP (Monte Carlo N-Particle) specialist, you need a strong background in nuclear engineering, physics, or a related field, with proficiency in computational modeling and radiation transport analysis. Experience with the MCNP software package, related simulation tools, and relevant certifications such as nuclear safety or reactor physics are highly valued. Analytical thinking, problem-solving abilities, and effective communication skills help you excel in interdisciplinary project teams. These skills are crucial for ensuring accurate simulations, maintaining safety standards, and providing critical insights in research or industry settings.

What typical projects or responsibilities can an MCNP specialist expect in their daily work?

As an MCNP specialist, your daily responsibilities generally include developing and running simulation models for radiation transport, analyzing results, and preparing detailed technical reports for project stakeholders. You'll often collaborate closely with physicists, engineers, and safety personnel to ensure that models accurately reflect physical systems and regulatory requirements. Projects may range from reactor core design and shielding analysis to medical physics applications or nuclear nonproliferation studies. The role typically involves both independent computational work and team-based problem-solving, ensuring diverse and engaging workdays.

What is an MCNP?

An MCNP job typically involves working with the Monte Carlo N-Particle (MCNP) transport code, a software tool used for simulating nuclear processes such as radiation shielding, reactor design, and dosimetry. Professionals in this role may include nuclear engineers, health physicists, and radiation safety specialists who use MCNP for modeling neutron, photon, and electron transport. The job often requires strong skills in computational physics, scripting, and data analysis, along with knowledge of nuclear physics principles.

More about Mcnp jobs
What cities are hiring for Mcnp jobs? Cities with the most Mcnp job openings:
What are the most commonly searched types of Mcnp jobs? The most popular types of Mcnp jobs are:
What states have the most Mcnp jobs? States with the most job openings for Mcnp jobs include:
Infographic showing various Mcnp job openings in the United States as of August 2026, with employment types broken down into 1% Internship, 92% Full Time, 2% Part Time, and 5% Contract. Highlights an 90% Physical, 6% Hybrid, and 4% Remote job distribution, with an average salary of $145,640 per year, or $70 per hour.

Intrinsic Radiation Postdoctoral Researcher

Los Alamos National Laboratory

Los Alamos, NM • On-site

$105K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 9 days ago


Los Alamos National Laboratory rating

9.2

Company rating: 9.2 out of 10

Based on 33 frontline employees who took The Breakroom Quiz

8th of 120 rated laboratories


Job description

Description
Job Title Intrinsic Radiation Postdoctoral Researcher
Location Los Alamos, NM, US
Organization Name XTD-RTA/X-Theoretical Design Radiation Transport Applications
Minimum Salary
Maximum Salary
What You Will Do
The Radiation Transport Applications Group (XTD-RTA) at Los Alamos National Laboratory (LANL) is searching for postdoctoral researchers to support intrinsic radiation calculations in our group. We are seeking candidates with a background in nuclear engineering, health physics, or a closely related field with demonstrated proficiency in MCNP (or similar).
About XTD-RTA
The Radiation Transport Applications Group (XTD-RTA) of the X-Theoretical Division provides radiation transport modeling and simulation capabilities in support of the laboratory's missions. We deliver high-quality analysis and understanding of radiation transport and analysis issues for an array of DOE missions, including stockpile modernization, global nuclear security, criticality safety and weapon effects. Our teams apply a wide variety of tools to model and investigate modern and historic experimental diagnostics, intrinsic radiation, radiation detection and measurement, shielding design, criticality safety, nuclear threat reduction and response, radiation health protection, and nuclear weapons effects.
What You Need
Minimum Job Requirements:
  • Demonstrated proficiency with MCNP
  • Demonstrated scientific productivity and communication as evidenced by publications and presentations.
  • Demonstrated ability to function effectively in a team environment, including exhibiting professional conduct in interactions with co-workers and supervisors.
  • Willingness to learn new skills and be flexible in work assignments.
Clearance:
Applicants must have the ability to obtain a Q-clearance, which typically requires U.S. Citizenship.
Education/Experience: PhD in nuclear engineering, health physics, or a related discipline completed within the last 5 years or will have completed all degree requirements by commencement of appointment. Applications from candidates who will earn their degree by the time of appointment are accepted.
Desired Qualifications:
  • Knowledge of the effects of radiation on electronics and/or materials.
  • Experience in experimental design and execution, data collection, and data analysis, preferably in the area of radiation detection and instrumentation.
  • CAD experience
  • High Performance Computing (HPC) experience

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:
Please attach a resume and a detailed cover letter addressing all required and desired skills. Please note that without a resume and cover letter your application will not be considered.
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.
Instructions on How to Activate/Create a LANL Jobs Account:
Follow the instructions below if you have ever had an employee Z number, been a contractor, or received Los Alamos Lab insurance coverage to activate your account:
  • Select the Click Here button if you have been employed with the Lab or received insurance coverage.
  • Please enter only your first and last name and current email address (an email with your validation code will be sent to you) to activate the account currently in our system.
  • Enter your validation code as described in the email you receive and complete the 3-page registration form. Your account is now active, and you can apply for jobs or save to your basket. Important: Enter the validation code within 15 days to activate your account or your account will be deactivated.
Follow the instructions below if you if you have never been employed with the Lab or received insurance coverage to create an account:
  • Select the Register button if you have never been employed with the Lab or received insurance coverage to Create an Account.
  • From here, you will establish an account with username and password.
  • How to Apply: Login to Your Account to Complete the Application Process
Click the Vacancy Name number (in blue) to view any job's details.
Click Apply or Add to Basket to apply later. Tip: To apply for a job or save your basket, you must have a LANL jobs account.
If you experience any technical issues, please email applyhelp@lanl.gov for assistance.
Employment Status Full Time
Appointment Type Postdoc
Postdoc
Contact Details
Contact Name
Email
Work Telephone

What Los Alamos National Laboratory employees say

Pay

Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom