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Senior Enrichment Science Engineer (Casual)

Oak Ridge National Laboratory
life insurance, parental leave, 401(k), retirement plan, relocation assistance
United States, Tennessee, Oak Ridge
1 Bethel Valley Road (Show on map)
Apr 27, 2026

Requisition Id16325

Overview:

The Centrifuge Science (CS) Section within the Enrichment Science and Engineering Division (ESED) at Oak Ridge National Laboratory (ORNL) is seeking a Senior Enrichment Science Engineer for the Mechanical Systems Modeling (MSM) Group. The Senior Enrichment Science Engineer will provide technical guidance and expertise across the design, analysis, installation, testing, and performance evaluation of high-speed rotating equipment and associated subsystems. This role involves troubleshooting rotating systems and supporting the development of advanced separation technologies.

ESED serves the nation in two critical areas: advancing enrichment technologies and exploring enriched stable isotope production and applications. The division leverages an elite staff of scientists and engineers with the world-leading capabilities of ORNL to deliver groundbreaking advancements with a variety of applications, from national security to life-saving medical treatments.

ESED is the national steward for research, development, and demonstration of centrifuge technology. The successful candidate will participate in research and development (R&D) activities that strategically advances science and technology focused on gas testing of prototype enrichment devices for processing uranium-bearing and stable isotope compounds.

The Mechanical Systems Modeling Group applies first-principles physics and empirically informed methods to advance the fundamental engineering understanding of gas centrifuge systems. The group leverages analytical techniques and advanced computational tools-including finite element analysis (FEA)-to evaluate and predict the behavior of complex rotating machinery operating under extreme conditions. Through the integration of modeling, simulation, and experimental validation, the group supports the design, performance optimization, and reliability of gas centrifuges used in the processing of uranium and stable isotope compounds.

The Mechanical Systems Modeling Group is seeking a highly experienced Senior Enrichment Science Engineer to provide subject matter expertise on rotating equipment and supporting systems. This role will support ongoing R&D initiatives within the DUECE and Stable Isotopes programs.

The ideal candidate will bring extension hands-on experience across DOE programs, national laboratories, and industry, with a proven track record in technical leadership and engineering innovation.

Major Duties/Responsibilities:

The selected candidate will provide technical guidance and expertise across the design, analysis, installation, testing, and performance evaluation of high-speed rotating equipment and associated subsystems. They will advise on the application of rotor analysis and design tools to assess rotor and suspension dynamic performance, supporting both design development and interpretation of test results.

Key Responsibilities:

  • Provide technical expertise in high-speed rotating equipment, including system development and testing.
  • Advise on design, analysis, and performance optimization of rotating systems and associated mechanical components.
  • Support program planning, execution, and technical reviews for DOE and national laboratory projects.
  • Lead or contribute to integrated product teams focused on advanced mechanical assemblies and system integration.
  • Conduct safety and risk assessments, including review of Safety Analysis Reports (SARs).
  • Contribute to proposal evaluations, roadmap development, and strategic planning for future separation technology.
  • Mentor engineering teams and provide high-level technical guidance on complex R&D initiatives.
  • Prepare high-quality, peer-reviewed classified research reports.

Basic Qualifications:

  • PhD degree and 8 years relevant postgraduate experience or a master's degree with 12 years postgraduate experience in electrical engineering or closely related engineering or science discipline.
  • Extensive experience with DOE programs, national laboratories, or equivalent federal research environments.
  • Strong background in mechanical system design, testing, and analysis.
  • Experience in safety analysis and compliance within high-risk engineering environment.
  • Ability to work effectively with cross-functional teams.
  • Active DOE Q clearance.

Preferred Qualifications:

  • Prior experience with Oak Ridge National Laboratory.
  • Expertise in flywheel energy storage systems.
  • Proven ability to work in integrated product teams and large-scale technical collaborations.
  • Familiarity with industry partnerships.

Special Requirements:

  • This position requires the ability to obtain and maintain a DOE Q clearance from the US Department of Energy. As such, this position is a Workplace Substance Abuse (WSAP) testing designated position. WSAP positions require passing a preplacement drug test and participation in an ongoing random drug testing program.

About the Isotope Science and Enrichment Directorate (ISED):
Established in 2020,ISED is strengthening ORNL's leadership in isotope production and enrichment technology innovation. ISED is guiding the laboratory's pursuit of the fundamental science and technology that broadens the application of isotopes for energy, environmental, medical, and national security purposes. These efforts are made possible through the High Flux Isotope Reactor, the Radiochemical Engineering Development Center, ORNL's other nuclear facilities, and an assemblage of world-leading scientists and engineers. Please visit https://www.ornl.gov/directorate/isotopes for more information about ISED.

About ORNL:

As a U.S. Department of Energy (DOE) Office of Science national laboratory, ORNL has an impressive 80-year legacy of addressing the nation's most pressing challenges. Our team is made up of over 7,000 dedicated and innovative individuals! Our goal is to create an environment where a variety of perspectives and backgrounds are valued, ensuring ORNL is known as a top choice for employment. These principles are essential for supporting our broader mission to drive scientific breakthroughs and translate them into solutions for energy, environmental, and security challenges facing the nation.

ORNL offers competitive pay and benefits programs to attract and retain individuals who demonstrate exceptional work behaviors. The laboratory provides a range of employee benefits, including medical and retirement plans and flexible work hours, to support the well-being of you and your family. Employee amenities such as on-site fitness, banking, and cafeteria facilities are also available for added convenience.

Other benefits include the following: Prescription Drug Plan, Dental Plan, Vision Plan, 401(k) Retirement Plan, Contributory Pension Plan, Life Insurance, Disability Benefits, Generous Vacation and Holidays, Parental Leave, Legal Insurance with Identity Theft Protection, Employee Assistance Plan, Flexible Spending Accounts, Health Savings Accounts, Wellness Programs, Educational Assistance, Relocation Assistance, and Employee Discounts.

If you have difficulty using the online application system or need an accommodation to apply due to a disability, please email: ORNLRecruiting@ornl.gov.

Relocation:Moving can be overwhelming and expensive. UT-Battelle offers a generous relocation package to ease the transition process. Domestic and international relocation assistance is available for certain positions. If invited to interview, be sure to ask your Recruiter (Talent Acquisition Partner) for details.

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This position is classified as Casual and does not guaranteefull-time employment.

This position will remain open for a minimum of 5 days after which it will close when a qualified candidate is identified and/or hired.

We accept Word (.doc, .docx), Adobe (unsecured .pdf), Rich Text Format (.rtf), and HTML (.htm, .html) up to 5MB in size. Resumes from third party vendors will not be accepted; these resumes will be deleted and the candidates submitted will not be considered for employment.

ORNL is an equal opportunity employer. All qualified applicants, including individuals with disabilities and protected veterans, are encouraged to apply. UT-Battelle is an E-Verify employer.

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