Nuclear Analysis Engineer: Core Design & Licensing - Austin

aalo-atomics; Idaho Falls (ID); On-site; USD 150,000 - 210,000; Full time

Benefits offered by this job

Competitive salary

Health, Dental, and Vision Insurance

Paid Time Off

Corporate Gym Membership

Job summary

Aalo Atomics is seeking a Nuclear Analysis Engineer to support design, safety analysis, licensing, testing, deployment, and operation of modular sodium-cooled reactor systems. You will perform reactor physics and neutronics analyses, develop high-fidelity models, and generate technical documentation for design reviews and regulatory submittals.

Collaborating with teams across fuel design, thermal-hydraulics, safety analysis, mechanical design, manufacturing, testing, and licensing, you will help

Qualifications

• Bachelor’s degree in Nuclear Engineering, Physics, Mechanical Engineering, or 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.

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 and scoping studies.
• Evaluate core criticality, neutron flux and power distributions, power peaking, shutdown margin, and other key design parameters.
• Perform fuel depletion and fuel cycle analyses including burnup, isotopic evolution, and activation.
• Support multiphysics analysis by coupling neutronics with thermal-hydraulics and related tools.
• Prepare clear technical reports and presentations for design reviews and licensing activities.
• Communicate methods, assumptions, uncertainties, and design implications effectively to stakeholders.

Skills

Reactor physics

Monte Carlo methods

Python programming

Neutronics analysis

Technical communication

Education

Bachelors degree

Tools

Serpent

MCNP

OpenMC

SCALE

DIF3D

Job description

Aalo Atomics is seeking a Nuclear Analysis Engineer to support design, safety analysis, licensing, testing, deployment, and operation of modular sodium-cooled reactor systems. You will perform reactor physics and neutronics analyses, develop high-fidelity models, and generate technical documentation for design reviews and regulatory submittals.

Collaborating with teams across fuel design, thermal-hydraulics, safety analysis, mechanical design, manufacturing, testing, and licensing, you will help