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Computational Nuclear Engineer - Senior R&D Staff Member

Date: Sep 26, 2021

Location: Oak Ridge, TN, US, 37830

Company: Oak Ridge National Laboratory

Requisition Id 5501 



Oak Ridge National Laboratory (ORNL) is the largest US Department of Energy science and energy laboratory, conducting basic and applied research to deliver transformative solutions to compelling problems in energy and security. Our diverse capabilities span a broad range of scientific and engineering disciplines, enabling the laboratory to explore fundamental science challenges and to conduct the research needed to accelerate the delivery of solutions to the marketplace.  


We are looking for highly motivated applicants with nationally recognized expertise in leading research and development (R&D) efforts across a broad range of reactor engineering methods and software development. We have an opening for a senior-level researcher in the Power Reactor Modeling (PRM) Group within the Nuclear Energy and Fuel Cycle Division (NEFCD), Fusion and Fission Energy Directorate. The RMP Group develops and applies state-of-the-art modeling and simulation capabilities for lattice physics, reactor core, spent fuel, and fuel cycle applications through leadership in the development of SCALE and Virtual Environment for Reactor Applications (VERA) and in collaboration with industry, national laboratories, and university researchers.     


Job Duties and Responsibilities: 


  • Application-driven methods development for radiation transport, neutronics, and coupled multiphysics for light-water and advanced reactor applications 
  • Design, optimization, and performance analysis of light-water and advanced reactor performance using VERA and SCALE
  • Collaboration with nuclear industry professionals on the effective use of VERA or SCALE for commercial applications
  • Confirmatory analysis assessments to enable the efficient regulatory review of reactor/fuel concepts and operational changes at nuclear power plants for the US Nuclear Regulatory Commission (NRC)
  • Fuel cycle analysis to evaluate the financial and safety impact of various reactor/fuel concepts or optimization provided using advanced reactor modeling software
  • Performing individual and collaborative R&D for highly complex and diverse problems and communicating the technical aspects of the work performed through publications and presentations 
  • Effectively interacting with technical peers, program managers, and sponsors, both domestically and internationally, to meet the requirements of projects within scope, schedule, and budget 
  • Leading significant research projects with broad latitude to define objectives and approaches to ensure technical and programmatic success 
  • Developing significant new proposals and acquiring research funding through work with project sponsors and cross-institutional collaborators 


Basic Qualification:


  • This position requires a PhD in nuclear engineering, computer science, or a relevant field with 8 years of post-graduate experience
  • Knowledge of computational nuclear R&D as demonstrated through education and associated publications is required.  
  • Excellent interpersonal skills are required, including verbal, presentation, and writing skills 
  • This position requires access to technology that is subject to export control requirements. Successful candidates must be qualified for such access without an export control license.


Preferred Qualifications :


  • PhD in nuclear engineering or computational science with a dissertation related to reactor analysis
  • Experience developing collaborative software with a computational nuclear analysis code suite
  • Familiarity with a wide range of reactor systems and concepts 
  • Familiarity with modern software development practices such as unit testing and revision control, and the ability to work with C++, FORTRAN, and scripting languages 
  • Capability to understand and interpret reactor and nuclear system operational and fuel cycle performance 
  • Familiarity with Monte Carlo algorithms including use and deployment on advanced HPC architectures
  • Working knowledge of neutronics and one or more complementary technical areas such as thermal-hydraulics, isotopic transmutation, nuclear data/physics, clad-coolant or salt chemistry, or thermo-mechanical fuel performance. 


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.

Nearest Major Market: Knoxville