Senior Nuclear/Mechanical Thermal-Hydraulic Engineer

Idaho National Laboratory is hiring a Senior Nuclear/Mechanical Thermal-Hydraulic Engineer. to work on our Thermal-Hydraulics Experiment and Modeling & Simulation team. Our team works a 9x80 schedule located out of our REC facility with every other Friday off.

The individual will engage with senior INL leadership on critical issues that necessitate cross-organizational collaboration and will actively cultivate client relationships. The chosen candidate must have extensive experience in RELAP5-3D development and consistently stay informed about advancements in the nuclear and computing industries, proactively recommending code maintenance and development activities.

Responsibilities Include:

• Apply nuclear engineering principles to design, develop, test, and analyze nuclear equipment and systems.
• Identifies and seeks new funding streams through industry contacts, writing white papers, and responding to RFPs (Request for Proposals).
• Engages with current and prospective clients to add or modify existing capabilities within RELAP5-3D to meet client needs. Examines theory and coding to develop methods to implement required changes.
• Leads assigned projects including, working collaboratively with team members to assign tasks, preparing budget estimates, developing project timelines and milestones, attending status meetings, and completing project presentations and reports.
• Prepare the Software Design and Implementation Document (SDID) and conduct a design review for each project.
• This posting ends: 8/6/25

Minimum Requirements:

• Level 4: Bachelor of Science in Nuclear Engineering or directly related engineering field from an ABET-accredited institution and 9 years of relevant experience; or a Master's of Science in Nuclear Engineering or directly related engineering field from an ABET-accredited institution and 6 years of experience; or a PhD in Nuclear Engineering or directly related engineering field from an ABET-accredited institution and 4 years of relevant experience
• Level 5: Bachelor of Science in Nuclear Engineering or directly related engineering field from an ABET-accredited institution and 14 years of relevant experience; or a Master's of Science in Nuclear Engineering or directly related engineering field from an ABET-accredited institution and 8 years of experience; or a PhD in Nuclear Engineering or directly related engineering field from an ABET-accredited institution and 6 years of relevant experience
• This position is subject to the requirements of DOE O 142.3B, Unclassified Foreign National Access Program.
• Recognized expert with broad expertise, unique knowledge, and extensive experience with systems code development.
• Demonstrated experience with FORTRAN90 or higher and Linux and Windows O/S.
• Extensive experience in code development
• Demonstrated project management experience
• Recognized and well known in the thermal hydraulics community.

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 4 ($111,888 - $229,284) / Level 5 ($134,121 - $275,136). At Idaho National Laboratory compensation decisions are determined using factors such as education, relevant experience, and other credentials.
• 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

• Frequent standing, walking, sitting, stooping, kneeling, and bending.
• Hand/finger dexterity for keyboarding and tool manipulation.
• Occasional lifting/moving up to 25 pounds.
• Sufficient visual and hearing capacity for essential functions and public interaction.
• Reasonable accommodations for individuals with disabilities.

Benefits and Relocation

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

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 5,000 scientists, researchers, and support staff, the laboratory works with national and international governments, universities and industry partners to discover new science and development technologies that underpin the nation's nuclear and renewable energy, national security, and environmental missions.

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.