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Thermal Hydraulic Core Design Engineer

Date: Jan 21, 2023

Location: Lynchburg, VA, US

Company: BWX Technologies

At BWX Technologies, Inc. (NYSE: BWXT), we are People Strong, Innovation Driven. Headquartered in Lynchburg, Va., BWXT provides safe and effective nuclear solutions for national security, clean energy, environmental remediation, nuclear medicine and space exploration. With approximately 6,400 employees, BWXT has 12 major operating sites in the U.S. and Canada. We are the sole manufacturer of naval nuclear reactors for U.S. submarines and aircraft carriers. Our company supplies precision manufactured components, services and fuel for the commercial nuclear power industry across four continents. Our joint ventures provide environmental remediation and nuclear operations management at more than a dozen U.S. Department of Energy and NASA facilities. BWXT’s technology is driving advances in medical radioisotope production in North America and microreactors for various defense and space applications. Follow us on Twitter at @BWXTech and learn more at



BWXT is currently seeking a Thermal Hydraulic Core Design Engineer for its Lynchburg, VA – Ramsey Place location!


The Advanced Technologies (AT) group at BWXT designs and develops innovative new nuclear reactors and related systems for internal and external customers. AT Engineering is seeking a Thermal Hydraulic Core Design Engineer to assist in the development of these systems.


Job Description/Duties:

  • Performs thermal analysis of advanced core designs which includes a variety of fuel systems, cycle and coolant types.
  • Controls a broad scope of studies, from preconceptual through reference design.
  • Performs a range of core thermal analysis from quick scoping to design quality.
  • Supports the development of core thermal modeling, simulation, and optimization.
  • Interacts with neutronic core design, fuel performance, mechanical, and system engineers. 
  • Works in a core design team contributing to a variety of projects.


Job Qualifications/Requirements:

  • A Bachelor’s degree in Nuclear or Mechanical Engineering from an ABET-accredited university is required.  
  • Must have a minimum of 7 years’ experience in thermal analysis for nuclear reactor core design.
  • Must be a strong team player with the ability to develop effective relationships with internal and external customers and suppliers.
  • Must be able to learn a variety of new procedures, processes and tools while maintaining various stages of production.
  • Must possess understanding of design control and configuration control concepts and project engineering activities (task plans, schedules).
  • Must be a US Citizen with no dual citizenship.
  • Must be able to obtain and maintain a U.S. Department of Energy (DOE) or Department of Defense (DOD) security clearance, whichever is required.
  • Travel (10-20%) domestic and international is required.


Preferred Qualifications/Requirements:

  • PhD in Nuclear Engineering from an ABET-accredited university.
  • Prior experience with verification and validation of thermal analysis tools.
  • Familiarity with plant analysis tools such as RELAP5-3D or TRACE. Experience with subchannel codes.
  • Knowledge of programming languages such as FORTRAN, Python, C, C++ in a Linux environment.





As a federal government contractor, BWX Technologies, Inc. and any subsidiaries, affiliates and related entities (“BWXT” or the “Company”) complies with all federal, state, and local laws and customer requirements regarding COVID-19 and other health and safety protocols.  As such, all BWXT new hires will be required to adhere to applicable Company COVID-19 requirements within the workplace as a condition of employment.


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: Nuclear Engineering, Thermal Engineering, Design Engineer, Security Clearance, Defense, Engineering, Government