Before completing an application, you’ll need to prepare a resume and cover letter. Your cover letter is crucial in identifying multiple areas of research that interest you.

Researchers will start to hear from students in August and through the fall and winter. The earlier you reach out to Lab researchers to express interest in a summer appointment, the better!

It takes a viable project, a researcher with time to supervise, office space, and funding for a researcher to host a summer intern. If you apply too late, or if any one or more of these factors is missing, the appointment won’t come together. You may be the best fit to support a project, but if the researcher has already committed his/her funding, the appointment can’t happen.

It’s your responsibility to research LLNL to identify projects and researchers. The breadth of research at LLNL is so wide that it is impossible for us to provide a comprehensive list of potential projects—or for someone to identify exciting projects for you based on your major.

Once a researcher agrees to host an ROTC student, and the student agrees to the appointment, then LLNL can start the summer hire process for application, clearance, and drug testing. It can take 6 to 8 weeks before an official LLNL offer can be extended.


  • Applications open October 1 (it can take a week or more before the ROTC Internship is posted)
  • Resumes must show military affiliation, expected graduation or EAD date, major, and contact info (cell and email)
  • Cover letters should be concise (preferably one page) and include research areas of interest, any research project titles, and LLNL employee names
  • 12-week appointments preferred (if you are unable to commit to 12 weeks, the researcher must agree to less time)
  • Secret and Top Secret clearances preferred, but not required (allows for more opportunities)


As an ROTC intern, you will participate in research in your assigned area, assist in conducting and documenting experiments, collect and analyze data, document and present results, attend lectures and workshops, and participate in the annual student poster symposium.

Resources for identifying LLNL research areas:



Apply for an ROTC summer internship at LLNL





  • EE, ME, chemical engineering and nuclear engineering
  • Chemistry, biochemistry, and bioengineering
  • Energy and climate
  • Additive manufacturing
  • Biology, nuclear science, bio detection, chem & explosive detection
  • High-performance computing, modeling and simulation
  • Cyber, data science and HPC Cluster Engineer Academy
  • Environment, safety & health, radiation protection
  • Intelligence/policy to include social sciences
  • Lasers and high energy density physics/National Ignition Facility and Photon Sciences