Nuclear Analysis Engineer
Austin, TX, Idaho Falls, IDfull-timePosted 1mo ago
About the role
Nuclear Analysis Engineer at Aalo Atomics to support design, analysis, licensing, testing, deployment, and operation of advanced modular sodium-cooled reactor systems. Focus on reactor core design, safety analysis, and technical basis for design decisions, testing, and regulatory engagement.
Responsibilities
- Perform neutronics and reactor physics analyses in support of the design, evaluation, and optimization of advanced reactor cores.
- Develop high-fidelity three-dimensional reactor models using Monte Carlo transport tools such as Serpent, MCNP, OpenMC, and SCALE.
- Perform deterministic reactor physics calculations and develop reduced-order models to support design iteration, scoping studies, and coupled analyses.
- Evaluate core criticality, neutron flux and power distributions, power peaking, control rod worth, shutdown margin, excess reactivity, and other key nuclear design parameters.
- Perform fuel depletion and fuel cycle analyses, including evaluation of fuel burnup, isotopic evolution, fission product poisoning, reactivity swing, activation, decay heat, and fuel management strategies.
- Support multiphysics analysis by coupling neutronics models with thermal-hydraulics, fuel performance, and thermo-mechanical analysis tools.
- Evaluate reactivity coefficients and feedback mechanisms, including fuel temperature (Doppler), moderator temperature, coolant temperature and density effects, voiding, and other temperature-dependent material effects.
- Calculate reactor kinetics parameters, including delayed neutron fraction, neutron generation time, and related quantities needed for reactor dynamics and safety analysis.
- Perform activation, radiation source term, and shielding analyses as needed to support reactor design, operations, maintenance, and safety evaluations.
- Prepare clear, well-organized technical reports, presentations, and supporting documentation for design reviews, safety analyses, and licensing activities.
- Communicate methods, assumptions, uncertainties, limitations, and design implications effectively to both technical and cross-functional stakeholders.
Qualifications
- Bachelor’s degree in Nuclear Engineering, Physics, Mechanical Engineering, or a closely related technical discipline
- 5+ years of experience performing reactor physics or neutronics analyses for nuclear reactor systems
- Strong grounding in neutron transport, reactor physics, criticality, and nuclear engineering fundamentals
- Experience with continuous-energy Monte Carlo methods and codes
- Experience with deterministic reactor physics methods or tools, including diffusion theory, discrete ordinates, nodal methods, or fast reactor analysis methods
- Proficiency in Python for engineering analysis, automation, scientific computing, or data processing
- Strong written and verbal communication skills
Skills
Required:Neutronics analysisMonte Carlo neutron transportDeterministic reactor physicsPython
Benefits
- Competitive salary based on technical level
- Health, Dental, and Vision Insurance
- Paid Time Off
- Corporate Gym Membership
Last updated Sep 24, 2026. Interested? Apply on the company site.
About Aalo
Welcome to the dawn of a Second Atomic Age
Creating abundant and dependable clean energy to power humanity for generations.
nuclearclean energyreactorspower plants
More open roles at Aalo
- Nuclear Safety Integration Lead4d agoIdaho Falls, ID
- Supply Chain Operations Manager4d agoAustin, TX · Supply Chain Operations
- Senior Mechanical Design Engineer — ASME Section III4d agoHybrid (Austin, TX / Idaho Falls, ID) · Engineering
- Office Manager4d agoNorth Austin, TX · People Operations and Talent
- Recruiting Coordinator4d agoAustin, TX · People Operations and Talent