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STS Target Systems Mechanical Design Engineer

Date: Jan 11, 2023

Location: Oak Ridge, TN, US, 37830

Company: Oak Ridge National Laboratory

Requisition Id 9684 


Oak Ridge National Laboratory (ORNL) is seeking a Target Systems Mechanical Design Engineer 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 Target Systems group is responsible for the design, fabrication, installation, and testing of all hardware necessary to convert the incoming 700 kW, 15 Hz proton bean into 22 beams of moderated neutrons. 


Job Description: 

The STS Target Systems Mechanical Design Engineer participates in and contributes to the design and integration of the Target Systems scope. The Mechanical Design Engineer is responsible for providing detail drawings, design specifications, procurement support, installation support, and testing support for the assigned portion of Target Systems scope under the direction of a senior or lead engineer.  If selected, you will report to the STS Target Systems Interface Systems Group Leader and will interface with engineers, scientists and other designers across and outside the project.


Major Duties and Responsibilities:

  • Support engineers to prepare clear, complete and accurate drawings, analyses and other design-related deliverables from models, layouts, rough or detailed sketches and from written or verbal instructions
  • Communicates and collaborates with engineers, designers, scientists and vendors throughout the design process, and assists senior or lead engineers with team coordination and management of deliverable timelines
  • Participate in R&D and prototyping of proposed equipment and systems
  • Contribute to various project document types, including but not limited to:
    • 3-D CAD models and hardware drawings using CREO
    • Interface control documents between Target Systems scope and other technical scope in conventional facilities, accelerator systems, instrument systems, and integrated control systems
    • Requirements documents
    • Design and Analysis Calculations (DACs)
    • Technical Specifications
    • Statements of Work (SOW)
    • Installation Plans
    • Test Plans


Basic Qualifications:

  • Bachelor’s degree in an engineering discipline. 
  • Professional experience in design, assembly, analysis and/or testing of complex mechanical systems
  • Ability to communicate engineering problems and design concepts through presentation to engineers, designers, scientists and other project partners


Preferred Qualifications:

  • Advanced degree in an engineering discipline
  • Familiarity with the technical concepts of drafting and engineering principles with a sound understanding of mechanics, fluids, heat transfer, etc.
  • Experience with drawings, schematics and P&IDs, including codes and standards such as Geometric Dimensioning and Tolerancing (GD&T)
  • Familiarity with Creo for CAD design. Experience with other CAD packages may be considered in lieu of Creo experience.
  • Experience designing systems for operation in an accelerator or nuclear environment
  • Experience working in an interdisciplinary team environment with engineers and other designers working together on large (thousands to ten thousand+ parts and subassemblies) assemblies
  • Familiarity with analytical tools such as ANSYS mechanical and Fluent CFD, ABAQUS and/or STAR-CCM+. 


Work Direction and Interface:

Position reports to the STS Target Systems Interface Systems Group Leader. Takes direction from and supports the work of Target Systems Lead Engineers.  Collaborates with engineers, scientists and designers internally and externally.


Authority/Approval Levels: 

Creates drawings, calculations and specifications as part of design packages and participates in resolution of technical fabrication issues with vendors.


Measures of Effectiveness:

  • Successfully develops high quality engineering designs and drawing packages
  • Successfully perform mathematical calculations under the supervision of an experienced engineer
  • Successfully interacts with designers and engineers to develop ideas into workable engineering solutions


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