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Mechanical System Design Engineer

Date: May 2, 2021

Location: Lynchburg, VA, US

Company: BWX Technologies

Headquartered in Lynchburg, Va., BWX Technologies, Inc. (NYSE:BWXT) is a leading supplier of nuclear components and fuel to the U.S. government; provides technical and management services to support the U.S. government in the operation of complex facilities and environmental remediation activities; and supplies precision manufactured components, services and fuel for the commercial nuclear power industry. With approximately 6,250 employees, BWXT has eleven (11) major operating sites in the U.S. and Canada. In addition, BWXT joint ventures provide management and operations at more than a dozen U.S. Department of Energy and NASA facilities. Follow us on Twitter @BWXTech and learn more at


BWXT is seeking a Mechanical System Design Engineer for our Advanced Technology group in Lynchburg, VA!


This position is focused on system design, not detailed component design, and will report administratively to the Manager of Systems Design Engineering. The Systems Design Engineering group supports programs for internal and external customers across Advanced Manufacturing, Medical Radioisotopes, and Nuclear Reactor Design.  The ideal candidate would have significant thermal fluid system design experience with a proven ability to design complex systems utilizing appropriate components.


Job Description/Duties:

  • Identifies relevant system requirements and interface requirements then prepare appropriate system design documentation such as system design descriptions and control narratives.
  • Selects components (e.g., valves, heat exchangers), perform basic calculations, and prepare specifications for their detailed design.
  • Designs piping systems including line sizing and pressure drop calculations.
  • Leads the creation of appropriate output documentation such as process flow diagrams, P&IDs, and isometrics.
  • Utilizes appropriate regulations, design codes and standards (e.g., ASME) for fluid systems.
  • Coordinates with other interfacing disciplines such as electrical engineers, I&C engineers, and mechanical equipment designers.
  • Prepares and presents system design results to internal and external stakeholders.


Job Qualifications/Requirements:

  • A Bachelor’s degree in Engineering (Mechanical, Nuclear or similar discipline) from an ABET-accredited university.
  • Technical background in engineering design, fluid systems, thermodynamics, and process instrumentation.
  • Experience with fluid system design and modeling software, such as AFT Arrow/Fathom, FlowMaster, or comparable tools.
  • Experience with MatLab and/or MathCad.
  • Must be proficient with standard Microsoft Office applications.
  • Must have excellent written and verbal communication skills.
  • Must be self-directed with minimal day-to-day supervision needed.
  • Must be a US Citizen with no dual citizenship.
  • Must be able to obtain and maintain a U.S. Department of Energy (DOE) clearance.


Preferred Job Qualifications:

  • Experience with the design and/or operation of thermo-mechanical fluid systems for nuclear applications.
  • Experience with CAD packages, such as SolidWorks or AutoCAD.
  • Programming experience with Python, C++, Fortran, Visual Basic, or similar.
  • Familiarity with NRC and/or DOE requirements.
  • Knowledge and experience in the application of Systems Engineering principles.


US Citizenship, with no dual citizenship is required for this position.


Applicants selected will be subject to a Federal background investigation and must meet eligibility requirements for access to classified information or matter. Position requires U.S. Citizenship with (no dual citizenship) ability to obtain and maintain a Department of Energy (DOE) security clearance which involves an extensive criminal and financial background investigation, drug test and previous employment reference verifications.


BWXT supports diversity and is committed to the concept of Equal Employment Opportunity. We have established procedures to ensure that all personnel actions such as recruitment, compensation, career development, benefits, company-sponsored training and social recreational programs are administered without regard to race, color religion, gender, national origin, citizenship, age, disability or veteran status.

Nearest Major Market: Lynchburg
Nearest Secondary Market: Virginia

Job Segment: Manufacturing Engineer, Engineer, Mechanical Engineer, Systems Engineer, Design Engineer, Engineering