Careers – Longenecker & Associates


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Senior Test Operations Engineer

Job Title
Senior Test Operations Engineer
Job ID
Oak Ridge,  TN
Other Location
Longenecker & Associates (L&A) seeks a Senior Test/Operations Engineer to support ongoing projects in the Oak Ridge, TN area.

L&A is a woman-owned small business and trusted partner enabling critical missions across the U.S. Department of Energy (DOE) complex for more than 30 years. We contribute to DOE’s nuclear security and environmental remediation enterprise by providing the highest-caliber staff and experts.

L&A is unconditionally committed to mission success and the well-being of employees, the nation, and the environment. Our team members are passionate about building a healthier environment for generations to come. We are a community that interfaces and effectively communicates with all levels of management and government. If you have a passion for excellence, seek opportunities to engage in mission-critical work, and consistently exceed expectations, apply now to join our professional family.

The Senior Test/Operations Engineer will perform a broad range of activities to support the overall Y-12 APMO Operations and Security oversight efforts within the specialized areas of testing, mechanical/chemical processes, commissioning and readiness of nuclear facilities.  The functions and expertise provided by the Senior Test/Operations Engineer ensures APMO’s ability to understand and monitor the implementation of the M&O Contractor’s testing program leading to readiness and commissioning of the facility. This understanding allows for compliance-based and performance-based perspectives in determining the adequacy of the Contractor’s testing, commissioning and readiness program requirements and the effectiveness of implementation in these areas.

The contractor shall be a member of the Y-12 APMO Operations and Security Staff operating under the general guidance of the Y-12 APMO Operations and Security Division Director which may include support to other areas outside of testing/commissioning.

Responsibilities include:
Working under limited management direction, the Senior Test/Operations Engineer:
  • Serves as Y-12 APMO's subject matter expert on testing of mechanical, piping/process systems, gloveboxes, electrical systems and HVAC systems.
  • Serves as Y-12 APMO's subject matter expert on commissioning and readiness of nuclear facilities (i.e. DOE O 425.1 D or NRC CFR requirements).
  • Reviews and evaluates the contractor’s implementation of the testing program (to include field testing), technical products, and records to ensure they contain and conform to appropriate quality requirements and are technically accurate and complete for their intended purposes.
  • Provides technical guidance, responses, and support for chemical processes, mechanical engineering, electrical systems, piping/process systems, gloveboxes, compressed air, HVAC, testing related questions, and issues presented by management and internal staff.
  • Plans and performs assessments as directed by management.  Reviews progress, evaluates results, and recommends changes to processes and procedures.                              
  • Determines and pursues courses of action necessary to obtain desired results.  These assignments may include frequent interface with the M&O Contractors and oversight activities during normal and outside of normal working hours.
  • Ensures assigned work is performed in accordance with Y-12 APMO requirements
  • Provides support and oversight of other areas within the Y-12 APMO Operations and Security purview, as requested
  • Produces high quality written assessment reports with minimal to no revisions

  • Minimum of 4 year Bachelor’s of Science (BS) degree from an accredited college in Engineering accredited by the Accreditation Board for Engineering and Technology (ABET).    If the individual does not possess a professional engineering degree, the following may be considered:
    • Current Professional Engineer (P.E.) registration in one of the relevant disciplines from any U.S. State or Territory
    • Past Senior Reactor Operator (SRO) certification/license issued by the Nuclear Regulatory Commission (NRC) in accordance with 10 CFR Part 55
  • Minimum 10 years’ experience in engineering or nuclear operations related position, preferably test/system/operations engineer (including minimum of 2 years in a supervisory/leadership position) at a DOE/NRC regulated facility. 
  • Demonstrated experience as a test/operations engineer or nuclear operations at a major commercial, industrial, or nuclear facility with a strong background in process and facility related systems (i.e. HVAC, Compressed Air, electrical, chemical processes, etc.)
  • Demonstrated experience in the commissioning, restart or readiness activities of nuclear facilities (i.e. DOE O 425.1 D or NRC CFR requirments).
  • Demonstrated experience in the design, operation, and maintenance of facility related process and mechanical/electrical systems.
  • In-depth knowledge of principles and practices related to testing, process systems, mechanical engineering/design, glovebox design/operation, HVAC systems, electrical systems, piping systems, and commissioning of nuclear facilities regulated by DOE/NRC.
  • Background with process system design and operation, including piping and instrument diagrams and equipment data sheets, that incorporate the applicable design requirements, including nuclear safety requirements.  
  • Knowledge of instrumentation and distributed control systems is also desired. 
  • Individuals must be able to read and understand prints and process piping diagrams
  • Experience with commercial nuclear plant or nuclear facility test programs (to include component, system and/or integrated testing) regulated by DOE/NRC
  • Experience with evaluation and resolution of mechanical engineering related project and code issues (e.g. ASME/ANSI/IBC).
  • Prior experience with NQA-1 requirements.
  • Excellent computer skills.
  • Excellent oral and written communication skills with experience preparing and presenting reports, including assessments.
  • Must be able to secure unescorted access authorization to plant site.
    • Experience as a senior system/test/operations engineer at nuclear facilities or commercial nuclear plants
    • Experience as a Senior Reactor Operator (SRO)
    • Experience and knowledge of Bechtel National, Inc. (BNI) procedures, programs, and processes.
    • Experience leading complex projects and large-scale projects
    • Experience supporting or leading Operational Readiness Reviews (ORR’s) or Operational Readiness Assessment Teams (ORAT’s)

Oak Ridge, TN

Successful candidates will be able to perform the essential functions of the job with reasonable accommodation. This job posting reflects management’s assignment of essential functions and the descriptions listed do not restrict management’s right to assign or reassign duties and responsibilities to this job at any time.

As an L&A employee, you will be eligible for a competitive salary as well as a comprehensive benefits package including healthcare (medical and dental), 401K plan, and paid time off. We believe in investing in our employees beyond compensation and as an L&A employee, you will have access to in-house training, career pathing, mentoring, award programs, tuition reimbursement and much more.

L&A is an Equal Opportunity Employer and all qualified applicants will receive consideration for employment regardless of their race, color, religion, sex, sexual orientation, gender identity, national origin, age, or status as a qualified individual with a disability or protected veteran.


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