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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 ...

Standard Nuclear, Inc.

Nuclear Engineer

Oak Ridge, TN

$94K - $112K/yr

Develop, run, and validate radiation transport and reactor physics models using industry-standard tools such as SCALE, MCNP, Serpent, or equivalent software. * Perform neutronics, shielding, dose ...

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 ...

Arcfield

Senior 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 ...

Standard Nuclear, Inc.

Nuclear Engineer

Oak Ridge, TN · On-site

$94K - $112K/yr

Develop, run, and validate radiation transport and reactor physics models using industry-standard tools such as SCALE, MCNP, Serpent, or equivalent software. * Perform neutronics, shielding, dose ...

Kalman & Company

Senior Nuclear Scientist

Addison, TX · On-site

Experience with MCNP or similar codes, calculations for MDA of airborne spectrometers or other similar analyses * Experience in gamma spectroscopic analysis of uranium, thorium and series progeny

Last Energy

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 ...

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 ...

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$69.5K

$145.6K

$235K

How much do mcnp jobs pay per year?

As of Jun 9, 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 job?

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 May 2026, with employment types broken down into 4% Internship, 92% Full Time, and 4% Part Time. Highlights an 100% In-person job distribution, with an average salary of $145,640 per year, or $70 per hour.
Nuclear Engineer - Radiological

Nuclear Engineer - Radiological

Last Energy

Austin, TX

$97K - $117K/yr

Full-time

Posted 11 days ago

Job description

Last Energy seeks an experienced Radiological Engineer to support the safety and licensing analysis for the PWR-20 micro nuclear reactor. This person will work closely with the nuclear engineering and safety analysis staff to ensure that the PWR-20 design meets radiation safety and accident dose requirements.
Key Duties & Responsibilities
  • Determine core and coolant radiological source terms
  • Determine neutron and gamma radiation fields
  • Calculate the dose due to theoretical accidents and the impact on surrounding areas
  • Participate in and support interfaces with customer and regulatory authorities to obtain regulatory approval of the Last Energy reactor core design, codes, and methods
  • Prepare and review safety analyses, calculation files, and associated records
  • Other duties as assigned
Qualifications
  • BS, MS, or PhD in Nuclear Engineering, or a related degree (e.g., physics with nuclear concentration)
  • 5+ years of applicable experience in PWR or BWR radiological evaluations
  • 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 positive peer relationships
  • Effective written and oral communication skills
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