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Mcnp Jobs (NOW HIRING)

Last Energy

Nuclear Engineer - Radiological

Austin, TX

$97K - $117K/yr

Proficiency in MCNP, SCALE, RADTRAD, or other nuclear industry analysis code as well as scripting and coding with PYTHON or EXCEL VB * Positive and effective team interaction skills and value ...

Last Energy

Nuclear Engineer - Radiological

Austin, TX · On-site

$97K - $117K/yr

Proficiency in MCNP, SCALE, RADTRAD, or other nuclear industry analysis code as well as scripting and coding with PYTHON or EXCEL VB * Positive and effective team interaction skills and value ...

Fuse

Health Physicist

Albuquerque, NM · On-site

Perform quick-turn shielding/activation estimates (MCNP/GEANT4/NOVICE or validated simplified methods); recommend cell layouts, shielding, and radiation material area (RMA) criteria. * Establish ...

Last Energy

Nuclear Engineer - Radiological

Austin, TX · On-site

$97K - $117K/yr

Proficiency in MCNP, SCALE, RADTRAD, or other nuclear industry analysis code as well as scripting and coding with PYTHON or EXCEL VB * Positive and effective team interaction skills and value ...

Fuse

Nuclear Engineer

San Leandro, CA · On-site

$111K - $133K/yr

Develop and apply Monte Carlo simulations (e.g., MCNP, Geant4, FLUKA) for particle transport, shielding, and dose assessment in a fusion facility. * Design and optimize radiation shielding for mixed ...

Cantos Ventures

Nuclear Engineer

El Segundo, CA · On-site

$106.50 - $146.48/hr

Strong experience with OpenMC, Serpent, MCNP, Attila4MC, MOOSE, RELAP, Pronghorn, GRIFFIN, or other similar nuclear software packages * Competency in distributed software development processes and ...

Arcfield

Mid-Level Physicist

Colorado Springs, CO · On-site

Position will require the use of scientific and engineering simulation software, in particular radiation transport codes (e.g., MCNP, Attila, etc.), as well as with object-oriented programming ...

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All JobsMcnp Jobs

Mcnp information

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$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.

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Mcnp jobs near you
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.

Nuclear Criticality Safety Engineer (3786)

Navarro Inc.

Portsmouth, OH • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 10 days ago

Job description

Navarro Research and Engineering is recruiting for multiple junior and senior Nuclear Criticality Safety Engineering positions located in Oak Ridge, TN, Paducah, KY, and Portsmouth, OH.

Navarro is a premier contractor providing high-quality technical services to DOE, NASA, and DOD. Navarro's success is based on our customer service focus and our well-known responsiveness and innovation. In all we do, either in corporate management or in our services to our clients, we seek for the most effective and efficient approaches to provide best value to our clients.

Performs NCS Engineering job functions as assigned by management. Typical job responsibilities assist and support management in NCS program implementation and engineering system design; which may include duties or activities in one or more of the following functional areas, in addition to other duties as assigned:

  • Perform nuclear criticality safety reviews of existing and proposed nuclear material operations and facilities, facility designs and modifications; and research or processing activities involving fissionable materials.
  • Develop nuclear criticality safety evaluations and program documents that meet applicable NRC/DOE requirements and standards, utilizing nuclear criticality safety software (e.g., SCALE or MCNP) as needed, in support of safe nuclear material operations and maintenance activities.
  • Complete reviews of nuclear criticality safety evaluations and program documents to ensure technical accuracy and compliance with applicable NRC/DOE requirements and standards.
  • Perform tracking and trending of NCS performance.
  • Support NCS operability or engineering evaluations when necessary.
  • Support NCS program implementation and training.
  • Support the development of hazards analysis, accident analysis, and hazard controls and documents the results in a nuclear facility safety basis (i.e., documented safety analysis and technical safety requirements), as requested.
  • Perform NCS work in accordance with contractor or client program documents and procedures.
  • Maintain knowledge of and demonstrates ability to perform work safely in accordance with all approved safety policies, procedures and applicable regulations and performs assigned duties in a safe manner.

Requirements

Minimum Qualifications :

  • BS/BA in Nuclear Engineering (or directly related field) and 3 years of related nuclear criticality safety experience. 
  • Understanding of pertinent nuclear criticality safety codes, governing regulations and industry practices. 
  • Demonstrated proficiency utilizing nuclear criticality safety software (e.g., SCALE or MCNP)
  • Strong interpersonal and communication skills 
  • Must possess a DOE "L/Q" clearance or the ability to obtain a DOE "L/Q" Clearance

Due to the nature of the government contract requirements and/or clearances requirements, US citizenship is required.

Navarro is an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to race, religion, color, national origin, gender, age, sexual orientation, gender identity, status as a protected veteran, or status as a qualified individual with a disability.

EEO Employer/Vet/Disabled

Benefits

  • Health Care Plan (Medical, Dental & Vision)
  • Retirement Plan (401k)
  • Life Insurance (Basic, Voluntary & AD&D)
  • Paid Time Off (Vacation & Public Holidays)
  • Short Term & Long Term Disability

Apply