STS Instrument Systems Mechanical Designer

Date: May 20, 2023

Location: Oak Ridge, TN, US, 37830

Company: Oak Ridge National Laboratory

Requisition Id 10600 


We are seeking a Mechanical Designer to produce high quality engineering design packages for components and subsystems of a neutron scattering instrument. The position resides in the Instrument Systems Engineering (ISE) Group within the Second Target Station (STS) Project at Oak Ridge National Laboratory (ORNL).


As part of the ISE team, you will have the opportunity to engage in the design of a complex, integrated neutron scattering instrument. Each instrument is a scientific experiment station with unique requirements and incorporates custom configurations of neutron optics & choppers, detectors & support structures, positioning devices, vacuum and/or pressure vessels, sample environments, neutron & biological shielding, and others, many of which are first-of-a-kind or one-of-a-kind. In this role, you will work alongside other instrument designers, engineers, and scientists to fully develop these component and subsystem designs. You will be responsible for developing component and subsystem designs and detailed fabrication drawings. You will support the responsible engineer in preparing technical specifications and other procurement-related documents.


Major Duties and Responsibilities:

  • Take complex engineering designs from conception through manufacture and build
  • Successfully communicate and collaborate with engineers and scientists throughout the design process
  • Create engineering models and drawings using Creo/Windchill
  • Prepare clear, complete and accurate working plans and detail drawings from layouts, rough, or detailed sketches and from written or verbal instructions
  • Perform tolerance stack ups to assure proper fit in assemblies
  • Deliver ORNL's mission by aligning behaviors, priorities, and interactions with our core values of Impact, Integrity, Teamwork, Safety, and Service. Promote diversity, equity, inclusion, and accessibility by fostering a respectful workplace - in how we treat one another, work together, and measure success.


Basic Qualifications:

  • Associates degree in an engineering discipline with a minimum of 5 years’ relevant experience. An equivalent combination of education and design experience may be considered instead of an associates degree.
  • At least 3 years’ experience using 3D CAD modeling software
  • Knowledge of the technical concepts of drafting and engineering principles, codes, and standards
  • Basic understanding of Geometric Dimensioning and Tolerancing (GD&T)
  • Ability to effectively communicate design concepts to engineers and other designers


Preferred Qualifications:

  • Experience with Creo and WindChill
  • Design for manufacturing experience
  • Experience working in an accelerator or nuclear environment
  • Experience with Creo skeletons and top-down design
  • Experience working in a team environment with other designers working together on large assemblies comprised of thousands of parts and sub-assemblies
  • Working knowledge of Geometric Dimensioning and Tolerancing (GD&T)
  • Experience in weldment design and American Welding Society (AWS) symbology
  • Experience in communicating with vendors and fabricators


About the Second Target Station Project:

The Second Target Station (STS) is a >$2Billion Department of Energy project to be constructed at the ORNL Spallation Neutron Source (SNS) over the next decade. The STS will provide wholly new capabilities for the study of a broad range of materials with neutron scattering and support thousands of users from the physical, materials, and applied sciences as well as industry. The science capabilities provided by the instrument suite at the STS will complement those of the two existing neutron scattering user facilities at ORNL, the First Target Station (FTS) of the SNS and the High Flux Isotope Reactor (HFIR). The STS will deliver the highest peak brightness cold neutrons in the world, which together with advances in neutron optics, instrumentation, and detectors, will ensure U.S. leadership in neutron scattering for decades to come. STS will be capable of supporting 22 individual neutron scattering instruments (beamlines), each of which transports neutrons from the source to a shielded end station that houses a user-provided sample along with a suite of detectors. Please see for more information.


About Oak Ridge National Laboratory: 


ORNL offers competitive pay and benefits programs to attract and retain talented people. The laboratory offers many employee benefits, including medical and retirement plans and flexible work hours, to help you and your family live happy and healthy. Employee amenities such as on-site fitness, banking, and cafeteria facilities are also provided for convenience. 


Other benefits include: 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, and Employee Discounts. 


Working Here:

Leveraging the talents of its world-class researchers and exceptional support staff, Oak Ridge National Laboratory is helping solve critical scientific and technical challenges and, in so doing, creating economic opportunity for the nation. ORNL provides access to unique facilities, laboratories, and equipment, drawing thousands of visiting researchers each year. A vibrant and welcoming scientific community, ORNL embraces the pursuit of innovative ideas and invests in its people to ensure their success. 


Living Here:

Located in the foothills of the Great Smoky Mountains, ORNL’s campus is just one hour away from the national park. Within a day’s drive of all major cities on the East Coast, ORNL provides the best of both worlds: proximity to the great outdoors and urban centers with diverse cultural attractions. The city of Oak Ridge, Tennessee has 150 miles of shoreline for water recreation, rowing, and boating; and nearby Knoxville, Tennessee is home to the thriving research campus of the University of Tennessee and a historic downtown known for its dining, theaters, shopping, and cultural and music festivals.


Visa sponsorship is not available for this position.


Relocation assistance is not available for this position.


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.

If you have trouble applying for a position, please email

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.

Nearest Major Market: Knoxville