Jefferson Lab

Come join our team at Jefferson Lab, where great minds matter.

Posting Date:
Range: $87,700 - $155,600 (SCS II)
Work Type: Flexible On-site (working more than 60% on-site)

What your job will be like:

The Jefferson Lab Scientific Computing Department is part of the Jefferson Lab CST (Computational Sciences and Technology) Division and is responsible for the support of scientific computing projects at the laboratory. In addition, the Jefferson Lab is a member of the Geant4 international collaboration and contributing to its development, validation and maintenance. We are seeking applicants for a position in Computational Physics and Computer Science (Staff Computer Scientist II), to support the lab’s hadronic and nuclear physics research programs with emphasis on Geant4-based detector simulation. The successful candidate will closely interact with staff members in the Scientific Computing department and the researchers in the experimental programs of Jefferson Lab and Electron Ion Collider project, to further existing mission needs and to meet future challenges of accurate and efficient detector simulation. Moreover, this position provides excellent opportunities for career development in both physics and computer/computational science in a world leading research establishment.

Essential Skills & Job Functions

  • Carry out research and development in the area of Geant4-based detector simulation with emphasis either on improving Geant4’s physics models or on architecture specific performance optimizations targeting upcoming heterogeneous architectures such as GPUs.
  • Participate in the development of a “common turn-key simulation application” usable for all Jefferson Lab current and near future experiments in addition to the development of the simulation code for ePIC experiment at Electron-Ion Collider.
  • Join the Geant4 international collaboration and take part in its development, validation and maintenance as well as its user-support and tutoring activities.
  • Some domestic and international travels are required.


  • Bachelors in Computer Science, Physics or related field is required.
  • 3 years of experience of programming in C++


  • Demonstrated knowledge of nuclear physics experiment and related software.
  • Proficient in C++.
  • Preference will be given to candidates who have knowledge and experience in the following areas:
    • Experienced with modern software development methods and tools.
    • Developing parallel software using pthreads/OpenMP and MPI.
    • Heterogeneous computing utilizing accelerator architectures using OpenCL and/or other programming paradigms.
    • Participation in high performance computing projects.
  • Excellent verbal and written communication skills are essential.


  • PhD in Nuclear Physics or High Energy Physics.
  • Programming experience for scientific applications utilizing Python, OpenCL, CUDA is a plus.
  • Previous development experience in Geant4.
  • Experience in other detector/radiation simulation engines such as MCNP, Fluka, PHITS, Penelope.

About Jefferson Lab

Join a community with a common purpose of solving the most challenging scientific and engineering problems of our time. The Jefferson Lab campus is located in southeastern Virginia amidst a vibrant and growing technology community.

A career at Jefferson Lab is more than a job. You will be part of “big science” and work alongside top scientists and engineers from around the world unlocking the secrets of our visible universe. Managed by Jefferson Science Associates, LLC; Thomas Jefferson National Accelerator Facility is entering an exciting period of mission growth and is seeking new team members ready to apply their skills and passion to have an impact. You could call it work, or you could call it a mission. We call it a challenge. We do things that will change the world.

Total Rewards at Jefferson Lab

At Jefferson Lab, we believe that a comprehensive employee benefits program is an important and meaningful part of the compensation employees receive. Our benefits program includes, but is not limited to:

  • Medical, Dental, and Vision Care Plans
  • Flexible Spending Accounts
  • Paid Time-off and Leave Programs (vacation, holidays, sick leave)
  • 401(k) Plan – 9% Lab Contribution; 100% vested
  • Flexible Work Arrangements (Hybrid & Alternate Work Schedules available)
  • Tuition Assistance, Training and Professional Development Programs
  • Live near the waterways of the Chesapeake Bay region with access to nearby beaches, mountains, and all major metropolitan centers on the East Coast

Jefferson Science Associates, LLC (JSA) manages and operates the Thomas Jefferson National Accelerator Facility (Jefferson Lab). JSA is an Equal Opportunity Employer and does not discriminate in hiring or employment on the basis of race, color, religion, ethnicity, sex, sexual orientation, gender identity, national origin, ancestry, age, disability, or veteran status or on any other basis prohibited by federal, state, or local law. As part of the JSA’s equal employment opportunity policy, we also take affirmative action as called for by applicable laws and Executive Orders to ensure that minority group individuals, females, disabled veterans, recently separated veterans, other protected veterans, Armed Forces, and qualified disabled persons are introduced into our workforce and considered for promotional opportunities.

JSA is committed to providing reasonable accommodations for persons with disabilities (unless doing so will result in an undue hardship). If you need a reasonable accommodation for any part of the employment process, please send an e-mail to employment @ or call (757) 269-7598 to provide the nature of your request. Reasonable accommodations are considered on a case-by-case basis.

Employment with JSA is conditional upon DOE approval if at any time during your employment you are participating in a Foreign Government Talent Recruitment Program or Affiliated activity. Generally, such programs/activities include any foreign-state-sponsored attempt to acquire U.S.-funded scientific research through programs run or funded by the government that target scientists, engineers, students, academics, researchers, and entrepreneurs of all nationalities working or educated in the United States. This includes positions or appointments, both domestic and foreign, titled academic, professional, or institutional appointments whether or not remuneration is received and whether full-time, part-time or voluntary.