Please note that all Jefferson Lab staff are required to be fully vaccinated from COVID-19, irrespective of work location, unless granted an accommodation under applicable state or federal law.

Accelerate your career with a new role at the nations newest national laboratory.  Here you can be part of a team exploring the building blocks of matter and lay the ground work for scientific discoveries that will reshape our understanding of the atomic nucleus.  Join a community with a common purpose of solving the most challenging scientific and engineering problems of our time.

Title Job ID Category Date Posted
Cybersecurity Graduate Student Intern 12334 Computer
SRF Staff Scientist 12290 Science
Hall A/C Staff Scientist I 12301 Science
Data Center Technology Specialist 12338 Computer
Electrical Safety Professional 12336 Engineering
Post Doctoral Fellow 12316 Science
Electronics Technologist - RF Systems 12248 Technology
Electronics Technician: Diagnostics and Controls 12323 Technology
Hall C Post Doctoral Fellow 12321 Science
Staff Mechanical Engineer 12062 Engineering
Project Controls Group Leader 12315 Management
Cybersecurity Student Intern 12333 Computer
Hall B Technologist/Design Drafter 12329 Technology
Cyber Security Manager 12313 Computer
CST Director of Science 12328 Science
Pipefitter/Fabricator 12332 Technology
Cryogenics Pipe Welder/Fitter 12309 Technology
Hall B Group Leader 12295 Science
Procurement Officer 12344 Purchasing
Web Developer Technical Student Intern 12354 Computer
Project Risk Manager 12345 Management
Site Occupational Medical Director 12331 Management
Senior SRF Accelerator Scientist 12240 Science
Electrical Engineering Student 12353 Engineering
R&D Technologist 12216 Technology
SRF Cavity Assembly Technician 12318 Technology
Electrical Engineering Student 12352 Engineering
Nuclear Physics Computing Lead 12326 Computer
Deputy Laboratory Director- Science 12362 Science
Electrical Engineer Intern 12337 Engineering
Quality Assurance Manager 12346 Engineering
EIC Project Engineer 12305 Engineering
Travel and Accounting Assistant 12339 Accounting
Magnet Group Leader 12320 Engineering
CST Project Manager 12327 Computer
Industrial Safety Professional 12335 Engineering
SRF Accelerator and RF Test Engineer 12234 Engineering
Post Doctoral - Data Scientist 12324 Science
Postdoctoral Fellow - Quantum Computing 12275 Research

A career a 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.

Welcome from Stuart Henderson, Lab Director
Why choose Jefferson Lab
    Middle School Science Bowl competitors huddle together to brainstorm an answer.
    Local teachers share ideas for a classroom activity with other teachers during Teacher Night.
    Two young learners hold up a model of the atom during Deaf Science Camp.
    Staff Scientist Douglas Higinbotham snaps a selfie with some of the postdoc students he is mentoring.

At Jefferson Lab we believe in giving back to our community and encouraging the next generation of scientists and engineers.  Our staff reaches out to students to advance awareness and appreciation of the range of research carried out within the DOE national laboratory system, to increase interest in STEM careers for women and minorities, and to encourage everyone to become a part of the next-generation STEM workforce.  We are recognized for our innovative programs like:

  • 1,500 students from 15 Title I schools engage in the Becoming Enthusiastic About Math and Science (BEAMS) program at the lab each school year.

  • 60 teachers are enrolled in the Jefferson Science Associates Activities for Teachers (JSAT) program at the lab inspiring 9,000 students annually.

  • 24 high school students have internships and 34 college students have mentorships at the lab.


Twitter posts
Meet our people
  • Seungjoon Lee, Detector Scientist

    Seungjoon Lee contributes groundbreaking invention to life-saving breast imaging technology

    From his second-floor office in the Advanced Research Center (ARC) building at Jefferson Lab, Detector Scientist Seungjoon Lee is making the final tweaks to a patented technology that enables 3D nuclear medicine imaging of the breast. Once the machine utilizing the technology is installed in hospitals and medical clinics, it may be used by millions of patients and could help save thousands of lives.

    The new technology is called the Variable Angle Slant Hole collimator, or VASH collimator.

    “It will be a milestone in the lab,” says Lee.

    The technology has already been licensed to Newport News-based Dilon Technologies, which has offices for ten to fifteen employees located just upstairs from Jefferson Lab’s Radiation and Detector Imaging group, to which Lee belongs.

    Detector Group’s Role in Breast Cancer Detection

    To understand the importance of Lee’s invention, it is critical to be aware of the existing breast cancer detection technologies widely used on the market. The current standard for breast cancer screening is the mammogram.

    “A mammogram is an X-ray image of the breast,” explains Lee. “To get a good X-ray image the breast needs to be tightly compressed.”

    Yet, for women with dense breast tissue, a mammogram may not provide accurate enough images. For that reason, the group’s gamma imaging technology was widely celebrated and adopted around the world. According to Lee, gamma imaging can provide a clearer image of cancerous masses within the breast, particularly in women with dense breasts. To take an image via the gamma camera, a patient is first given a radioactive chemical intravenously.

    “The chemical binds to cancer cells and a few of minutes later, you image the breast,” explains Lee. “If there is a cancer, it lights up in the detector. That’s molecular imaging.”

    While gamma imaging can provide another imaging tool for doctors, the chemical injected into the patient does emit radiation.

    “People are worried about the dose of the chemical that is injected into the patient, because that’s radiation inside the body,” explains Lee. “A mammogram also subjects patients to radiation in the form of X-rays, but it’s lower exposure.”

    Adding the new VASH collimator to a gamma imaging system will allow for a much smaller amount of radioactive chemical to be given to patients. Once the complete system is on the market, it’s expected to have a similar safety level as a mammogram. Plus, it provides a 3D view of the breast, providing a better, more accurate image of potential cancers.

    Solving a Rotating Problem

    To create 3D images of the breast with the VASH collimator, Lee had to combine his background as a mechanical engineer with his post-graduate and post-doctorate experience in biomedical optics.

    “For the common CT or SPECT scans, a detector rotates around the patient, which is why these devices look like a cylinder,” explains Lee. “For breast imaging, it’s hard to rotate around the breast because there’s limited space. Also, the breast needs to be under compression. It’s difficult to rotate a device around it while also compressing.”

    To solve these issues, Lee began by starting with a standard parallel collimator that is shaped like a honeycomb with square openings. He then designed one able to have the angle of the openings to be variable under computer control.

    “The parallel collimator passes gamma rays that travel perpendicular to the detector face. If the honeycomb structure is skewed in one direction or the other, you can change the angle,” says Lee. “Imagine a window screen. If you stack multiple window screens, that makes the collimator structure. If you move the screens a little on the side, the angle of light passing through will be changed. If you stack multiple screens and don’t change the bottom screen, but change the top screen or middle screen, we can get multiple projection images with a stationary detector.”

    In order to further reduce radiation exposure to patients and get even better images, Lee is also developing a dual-headed detector that will take one image from below and one from above the breast.

    “It’s a game-changer,” confirms Lee.

    Maintaining Strong Ties to Korean Community

    Lee’s mother may have predicted his success in mechanical engineering when he was a young boy growing up in Seoul, Korea.

    “My mom told me I tried to disassemble a telephone at age five,” he laughs. “That’s my blood—pure mechanical engineering.”

    So, it came as no surprise when he earned his undergraduate degree in mechanical engineering. Afterwards he moved to the U.S. to attend Texas A&M University, where he earned a master’s degree and went on to earn his Ph.D. in biomedical engineering with a special interest in optics.

    Although he has settled in the U.S., Lee hopes to pass on his Korean heritage to his children. He returns to Korea every other year with his wife and two children. At home, the family speaks only Korean, and the children attend Korean school every Saturday, where they learn Korean culture and language.

    Through the Korean school, Lee connected with a group of three other tennis partners. The group has been gathering to play every Wednesday for more than 10 years now.

    “One player is a medical doctor, one works for NASA, and the other is an engineering professor,” says Lee. “There are a lot of common interests around work topics, and everyone is so busy, we play once a week for four hours.”

    Lee’s busy schedule is likely to continue over the next few years as he works to test and refine his VASH technology. If all goes according to plan, he hopes to see the VASH collimator hit the market in approximately two years.

    By Carrie Rogers

Youtube videos

The Jefferson Lab campus is located in southeastern Virginia amidst a vibrant and growing technology community with deep historical roots that date back to the founding of our nation.  Staff members can live on or near the waterways of the Chesapeake Bay region or find peace in the deeply wooded coastal plain.  You will have easy access to nearby beaches, mountains, and all major metropolitan centers along the United States east coast.

To learn more about the region and its museums, wineries, parks, zoos and more, visit the Virginia tourism page, Virginia is for Lovers

To learn more about life at Jefferson Lab, click here.


We support our inventors! The lab provides resources to employees for the development of patented technology -- with over 180 awarded to date! Those looking to obtain patent coverage for their newly developed technologies and inventions while working at the lab are supported and mentored by technology experts, from its discovery to its applied commercialization, including opportunities for monetary awards and royalty sharing. Learn more about our patents and technologies here.

  • Kim Edwards
    Kim Edwards
    IT Division/Information Resource

    "When I’m 95 years old, I hope I will be one of those people who worked in the background to affect other people’s lives for the better."

  • Pashupati Dhakal
    Pashupati Dhakal
    Accelerator Operations

    "Not every day is the same day. Working in research and development, it’s not a one person job."

  • Katherine Wilson
    Katherine Wilson
    Staff Engineer

    “Generally, the mechanical engineers at the lab support the physicists. The physicists have the big ideas about how to support new science, and the engineers figure out how to make that happen.”

  • Scott Conley
    Scott Conley
    Environmental Management Team

    "There is world-class research going on here. Any given day you can be in the room with genius physicists and that’s just amazing.”

  • Welding Program Manager
    Jenord Alston
    Welding Program Manager

    "Everybody in the chain is working towards the same goal: to ensure that everything is built safe and to the code specifications"

Jefferson Science Associates, LLC manages and operates the Thomas Jefferson National Accelerator Facility. Jefferson Science Associates/Jefferson Lab is an Equal Opportunity and Affirmative Action 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.

If you need a reasonable accommodation for any part of the employment process, please send an e-mail to employment@jlab.org or call (757) 269-7598 between 8 am – 5 pm EST to provide the nature of your request.

"Proud V3-Certified Company"

A Proud V3-Certified Company
JSA/Jefferson Lab values the skills, experience and expertise veterans can offer due to the myriad of experiences, skill sets and knowledge service members achieve during their years of service. The organization is committed to recruiting, hiring, training and retaining veterans, and its ongoing efforts has earned JSA/Jefferson Lab the Virginia Values Veterans (V3) certification, awarded by the Commonwealth of Virginia.