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Advanced Reactor Neutronics, Thermal-Hydraulics, Thermo-Mechanical Analyst

Idaho National Laboratory
Idaho National Laboratory Salary
Idaho, ID Full Time
POSTED ON 5/14/2026
AVAILABLE BEFORE 6/12/2026
Job Description

Idaho National Laboratory is hiring an Advanced Reactor neutronics, thermal-hydraulics, thermo-mechanical, or structures analyst to work in our Materials and Fuels Complex Reactor Engineering group. This position is located at our Materials and Fuels Complex. Our team works a 9x80 schedule with every other Friday off.

INL is recognized as the lead national laboratory for DOE-NE, providing much of the nuclear research, development, and demonstration capability needed to move nuclear innovation forward to deployment. MFC hosts a unique combination of personnel, facilities, and infrastructure for the deployment of advanced nuclear reactors.

As a Reactor Engineering Analyst, you will analyze neutronics, thermal, or mechanical behavior of advanced reactors demonstrations at INL. You will be responsible for contributing delivery of confirmatory analyses to support design and product acceptance of new nuclear reactor systems focus on micro-reactors, assisting in startup physics testing of advanced reactor, and supporting existing reactors.

Essential Job Functions

  • Supports, coordinates and performs confirmatory calculations and startup planning in area of technical expertise (e.g. reactor physics, thermal hydraulics, thermo-mechanical analysis) to support development of facility and reactor specific safety basis supporting analyses.
  • Work includes planning, scheduling, and tracking of reactor analyses and planning for startup testing and verification activities to validate analytical work and ensure safety.
  • Verify compliance of advanced reactor designs according to industry codes, such as ASME Boiler Pressure Vessel Code. Decompose project goals into defined and controlled design requirements.
  • Responsible for providing support to project and planning activities related to new reactor design and acceptance, talking to design and nuclear safety organizations, working with external reactor designers and DOE (ID and HQ), and contributing organizations (e.g. structural analysis, criticality safety, radiation protection, etc.).
  • Participate in the evaluation and resolution of complex engineering problems. Contribute to technical decisions based on sound engineering practices and in accordance with Laboratory policies and procedures.
  • Apply advanced nuclear engineering design principles, theories, and concepts.
  • Use best practices in design methodologies to develop and validate designs.
  • Document designs to ensure conformance with requirements and standrds.
  • Establish testing, inspection, and quality requirements.
  • Ensure fabrication, construction, assembly, and procurement align with design specifications.
  • Defend analytical methods and results in reviews.
  • Support project/program interactions with sponsors, operations, and engineering organizations.
  • Develop and improve physics-based mathematical models and analysis methods.
  • Prepare reports and peer-reviewed publications.
  • Participate in professional development activities.
  • Other duties as assigned.

Required

  • Level 3: Bachelor's of Science degree in Nuclear Engineering or other related technical engineering degree from an ABET-accredited institution and 5 years' experience. Master’s and 2 years of experience. PhD and 2 years' experience.
  • Level 4: Bachelor's of Science degree in Nuclear Engineering or other related technical engineering degree from an ABET-accredited institution and 9 years of experience. Master’s and 6 years of experience. PhD and 4 years' experience.
  • Relevant experience includes nuclear reactor analysis in neutronics, thermal-hydraulics, or thermal-mechanical.
  • Relevant experience with software codes such as MCNP, SCALE, SERPENT, ANSYS, ABAQUAS, STAR-CCM , RELAP5, GRIFFIN, PRONGHORN, CARDINAL, or other MOOSE tools.
  • This position requires the ability to obtain and maintain a Department of Energy "Q" clearance, which requires US Citizenship.

The Ideal Candidate Will Possess

  • Advanced degree in Nuclear Engineering or a directly related engineering field from an ABET-accredited institution.
  • Experience in nuclear fuels and materials, reactor physics, thermal hydraulics, core design, and analysis tools/methods.

Job Information

  • The pay range for this position is Level 3 ($95,256 - $195,288)/Level 4 ($114,360- $234,336). At Idaho National Laboratory compensation decisions are determined using factors such as education, relevant experience, and other credentials.
  • TDP: This is a testing designated position; you will be required to submit to a pre-employment drug screen and periodic drug testing throughout the term of your employment.
  • Multi-Level: This is a multi-level posting and you will be placed at the appropriate level dependent on depth and breadth of proven experience and skills.

Physical Requirements

While performing the duties of this classification, the employee is frequently required to stand, walk, sit, stoop, kneel, bend, and work in an office and field/laboratory environment. The job requires hand/finger dexterity to keyboard or type, handle materials, manipulate tools, and reach with hands and arms. The job requires operation of job-related equipment and driving a vehicle. The employee must occasionally lift and/or move up to 35 pounds without assistance. Sufficient visual acuity and hearing capacity to perform the essential functions and interact with the public is required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

About Us

Benefits and Relocation

  • Medical, Dental, Vision, and Flexible Spending Accounts
  • 401(k) with a 4.2% employer contribution and up to 4.8% match (regular positions) or self-contribute access (postdoctoral positions)
  • Paid time off (personal leave)
  • Employee Education Program (tuition assistance for eligible positions)
  • Comprehensive Relocation Package
  • Benefit eligibility subject to multiple factors, including employment status and position classification.

At this time, BEA will not sponsor any H1-B visas obtained outside of the United States of America (U.S.A.), including consular visas.

INL is a science-based, applied engineering national laboratory dedicated to supporting the U.S. Department of Energy's mission in nuclear energy research, science, and national defense. With more than 6,300 scientists, researchers, and support staff, the laboratory works with national and international governments, universities and industry partners to change the world's energy future and secure our nation's critical infrastructure.

INL Mission

Our mission is to discover, demonstrate and secure innovative nuclear energy solutions, other clean energy options and critical infrastructure.

INL Vision

Our vision is to change the world's energy future and secure our nation's critical infrastructure.

Selective Service Requirements

To be eligible for employment at INL males born after December 31, 1959 must have registered with the Selective Service System (SSS). For more information see www.sss.gov .

Equal Employment Opportunity

Idaho National Laboratory (INL) is an Equal Employment Opportunity (EEO) employer. It is the policy of INL to provide equal employment opportunities to all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, protected veteran or disabled status, or genetic information.

Reasonable Accommodation

We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.

Other Information

When applying to positions please provide a resume and answer all questions on the following screens. Applicants, who fail to provide a resume or answer the questions, may be deemed ineligible for consideration.

INL does not accept resumes from third party vendors unsolicited.

Salary : $95,256 - $195,288

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