Senior Reactor Physics & Neutronics Engineer

Airswift; Houston (TX); On-site; USD 95,000 - 125,000; Full time

Job summary

Airswift seeks a Reactor Physics & Neutronics Engineer II to join a growing nuclear engineering organization focused on advanced reactor and energy technologies in Houston. You will perform reactor physics calculations, develop models, run simulations, support licensing and safety analyses, and work with multidisciplinary teams to deliver rigorous technical solutions.

This role emphasizes analytical rigor, documentation quality, and active participation in problem solving within a regulated

Qualifications

• Bachelor's degree in Nuclear Engineering, Engineering Physics, Physics, or a related technical discipline.
• Approximately 5-10 years of relevant experience in reactor physics, neutronics, nuclear analysis, or related engineering fields.
• Strong understanding of reactor physics fundamentals, including neutron behavior, reactivity, flux distributions, power distributions, depletion, and feedback mechanisms.
• Experience performing analytical calculations, simulations, and technical evaluations.
• Strong written and verbal communication skills with the ability to document and present technical findings effectively.
• Demonstrated problem-solving ability, attention to detail, and commitment to technical excellence.
• Ability to work effectively in multidisciplinary engineering teams.

Responsibilities

• Perform reactor physics and neutronics calculations to support engineering design, safety analyses, and operational assessments.
• Develop, execute, maintain, and document computational models using established reactor physics and neutronics methodologies.
• Conduct neutron transport, reactivity, depletion, shielding, and core performance analyses.
• Support criticality evaluations, fuel management studies, and reactor performance assessments.
• Perform sensitivity and uncertainty analyses to evaluate the impact of assumptions, input parameters, and modeling approaches.
• Support verification, validation, and benchmarking activities using experimental data, test results, and industry-accepted standards.
• Collaborate with thermal-hydraulics, safety, systems, mechanical, materials, and testing teams on integrated engineering solutions.
• Provide technical input to safety analyses, licensing documentation, regulatory responses, and design-basis evaluations.
• Prepare engineering calculations, technical reports, analysis packages, model documentation, and supporting records in accordance with quality and configuration management requirements.
• Participate in technical reviews, problem resolution efforts, and continuous improvement initiatives.
• Take ownership of assigned technical tasks and contribute to project execution and technical decision-making.

Skills

Reactor physics

Neutronics

Analytical skills

Simulations

Documentation

Team collaboration

Education

Bachelor's degree in Nuclear Engineering

Tools

Neutron transport software

Monte Carlo methods

Job description

Airswift seeks a Reactor Physics & Neutronics Engineer II to join a growing nuclear engineering organization focused on advanced reactor and energy technologies in Houston. You will perform reactor physics calculations, develop models, run simulations, support licensing and safety analyses, and work with multidisciplinary teams to deliver rigorous technical solutions.

This role emphasizes analytical rigor, documentation quality, and active participation in problem solving within a regulated