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Oak Ridge National Laboratory
Oak Ridge, TN, United States (on-site)
14 days ago
Oak Ridge National Laboratory
Oak Ridge, Tennessee, United States (on-site)
14 days ago


Requisition Id 9415 


We are seeking a Lead Vacuum Engineer who will perform and lead the design and integration of the vacuum sub-systems and related components for the Second Target station (STS) Accelerator, Target and Instrument Systems. The STS Lead Vacuum Engineer ensures that the design conforms to physics requirements, engineering criteria, integrated controls requirements and engineering and building interface requirements, and is responsible for maintaining cost and schedule while providing designs, procurement support, installation support and testing support. The Lead Vacuum Engineer may also be tasked with responsibility for the design of other aspects of the STS Accelerator System. This position resides in the Accelerator Systems group in the STS DIRECTORATE at Oak Ridge National Laboratory (ORNL).  

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 Accelerator 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.

Major Duties/Responsibilities: 

  • Serve as primary interface for STS vacuum sub-systems
  • Interfaces closely with design engineers in Accelerator Systems, Target Systems and Instrument Systems to design, procure and install vacuum sub-systems scope
  • Draft, track, review, and manage the following project document types:
    • Interface control documents describing the vacuum interfaces between STS Accelerator, Target and Instrument systems and Conventional Facilities
    • Vacuum requirements definition documents
    • Design and Analysis Calculations (DACs)
    • Hardware drawings
    • Technical Specifications
    • Statements of Work
    • Installation Plans
    • Test Plans
  • Ensure that the Scope of Work on vacuum sub-system procurements is technically complete and integrated with cost and schedule requirements
  • Manage vacuum sub-system budgets
  • Manage vacuum sub-sytem procurements
  • Deliver project milestones based on annual and project work plans
  • Ensure compliance with Environment, Safety and Health (ES&H) and QA requirements
  • Collaborate with Neutron Science Directorate (NScD) operations to ensure operations requirements are captured
  • Develop strong working relationships across the project with Contol Account Managerss, line managers, vendors, sponsors, and project support organizations including ES&H, QA, procurement, business, project controls, and human resources
  • Represent the STS Project by participating in and presenting project information at reviews, conferences and workshops.


Basic Qualifications:

  • BS in Mechanical Engineering or related technical field with a minimum of 5 years of experience in design, construction and operation of Low, Medium and High Vacuum hardware and related control systems, or an equivalent combination of education and experience
  • Experienced in designing vessels to the requirements of the ASME Boiler & Pressure Vessel Code
  • Thorough knowledge of operating principles of vacuum pumps, pressure gauges, vacuum valves and vacuum seals, and an understanding of how to select appropriate vacuum equipment and materials for specific vacuum environments
  • Working knowledge of CAD software systems
  • Prior experience in directing the work of engineers, designers, technicians and subcontractors responsible for vacuum and associated control system operation
  • Ability to guide work of a team of engineers and technicians in a project environment
  • Must be highly motivated, self-directed and able to work in a team environment
  • Experience creating engineering drawings, specifications, procedures, reports and plans.

Preferred Qualifications:

  • MS degree in Mechanical Engineering or related technical field with 8+ years of experience in design, construction and operation of Low, Medium and High Vacuum hardware and related control systems. 
  • Experience with Residual Gas Analysis (RGA) and design of vacuum systems for radiation environments and cryogenic environments
  • Experience with particle accelerator or sensitive scientific instrument vacuum system design
  • Excellent written and oral communication skills
  • Motivated self-starter with the ability to work independently and to participate creatively in collaborative teams across the project and with NScD operations
  • Ability to function well in a fast-paced environment, set priorities to accomplish multiple tasks within deadlines, and adapt to ever changing needs

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.
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.

Job Information

  • Job ID: 66735730
  • Workplace Type: On-Site
  • Location:
    Oak Ridge, Tennessee, United States
  • Company Name For Job: Oak Ridge National Laboratory
  • Position Title: STS Lead Vacuum Engineer
  • Job Function: Applied Mechanics
  • Job Type: Full-Time

Please refer to the company's website or job descriptions to learn more about them.

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