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Mechanical Designer III - STS Instrument Systems

Date: Jun 11, 2021

Location: Oak Ridge, TN, US, 37831

Company: Oak Ridge National Laboratory

Requisition Id 4912 



Oak Ridge National Laboratory (ORNL) is seeking a Mechanical Designer III for the Second Target Station (STS) project. The STS is a >$1Billion, Department of Energy project to be constructed at the ORNL Spallation Neutron Source (SNS).  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 and industry. The science capabilities provided by the instrument suite at the STS will complement those of the two existing DOE Office of Science 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 of cold neutrons in the world, which together with advances in neutron optics, instrumentation, and detectors, will ensure US leadership in neutron scattering for decades to come. The 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 which houses a user-provided sample along with a suite of detectors. Each instrument has unique requirements and incorporates custom configurations of neutron optics, choppers, detectors, sample environment and shielding.


Job Description: 

STS Instrument Systems Engineering is responsible for development of designs for new beamline instruments, components and systems, many of which are first-of-a-kind or one-of-a-kind, and is seeking a Mechanical Designer III to produce high quality engineering design packages. The successful candidate will collect and maintain records, technical drawings and documents for STS instruments. This role reports to the STS Instrument Systems Engineering Manager and interfaces with engineers, scientists and other designers across the project.



Major Duties and Responsibilities:

  • Takes complex engineering designs from conception through manufacture and build
  • Successfully communicates and collaborates with engineers and scientists throughout the design process
  • Creates engineering models and drawings using computer-aided design software (Creo)
  • Produces installation drawings and specifications
  • Prepares clear, complete and accurate working plans and detail drawings from layouts, rough or detailed sketches and from written or verbal instructions
  • Checks detail drawings from peer designers to assure compliance with engineering codes and drafting standards
  • Works with the Document Control Center to help ensure accuracy and completeness of drawings


Basic Qualifications:

  • Associates degree in an engineering discipline.  An equivalent combination of education and design experience may be considered instead of an AS degree
  • 5+ years of experience in design of complex mechanical systems
  • Knowledge of the technical concepts of drafting and engineering principles, codes, and standards
  • Working knowledge of Geometric Dimensioning and Tolerancing (GD&T)
  • Ability to communicate design concepts through presentations 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 (thousands to ten thousand+ parts and subassemblies) assemblies
  • Experience in weldment design and American Welding Society (AWS) symbology
  • Experience in communicating with vendors and fabricators


Work Direction and Interface:

Position reports to the STS Instrument Systems Engineering Manager. Collaborates with other CAD designers. Supports the work of Instrument Engineers and Instrument Scientists.


Measures of Effectiveness:

  • Successfully develops high quality engineering designs and drawing packages
  • Successfully interacts with designers and engineers to develop ideas into workable engineering solutions
  • Effectively manages Creo models and assemblies
  • Promotes a high-quality design culture  through application of STS Engineering standards and best modeling practices

For more information about our benefits, working here, and living here, visit the “About” tab at




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