Sidney Fernbach Postdoctoral Fellow

We are looking for a Sidney Fernbach Postdoctoral Fellowship candidate in the Computing Sciences. This prestigious fellowship will be awarded to one postdoctoral candidate who demonstrates exceptional talent, a strong scientific track record, and outstanding potential to make significant contributions to computational mathematics, scientific computing, computer science, data science, or AI for science. Details of the fellowship may be found at https://computing.llnl.gov/fernbach . You will have the freedom to pursue your own original research in one or more aspects of computing sciences. You will work in a cutting-edge, interdisciplinary research environment with accomplished researchers, and have access to Livermore Computing’s world-class HPC environment.  This position will be closed to applicants after November 20, 2026.

You will

• Conduct original and independent research in the computing sciences.
• Report research results in LLNL seminars and in the major scientific conferences.
• Publish research results in refereed journals.
• Interact with a broad spectrum of scientists internally and externally.
• Perform other duties as assigned.

• Ph.D. in Applied Mathematics, Computational Mathematics, Computer Science, Data Science, or related computational science and engineering disciplines.
• Demonstrated creativity, exceptional ability, and superior knowledge in the computing sciences.
• Demonstrated ability to conduct original and independent research through a proven track record of scientific accomplishment.
• Advanced written and verbal communication skills necessary to interact with a multidisciplinary research team, author technical and scientific reports and papers, and deliver technical presentations.
• Experience writing reports, publications and proposals.
• Demonstrated potential for technical leadership.
• Must be able to work independently as well as in a team environment.

Pay Range

$151,092 Annually

Join us and make YOUR mark on the World!

Lawrence Livermore National Laboratory (LLNL) has turned bold ideas into world-changing impact advancing science and technology to strengthen U.S. security and promote global stability.

Our mission spans four critical national security areas nuclear deterrence, threat preparedness, energy security, and multi-domain defense empowering teams to take on the toughest challenges of today and tomorrow. With a culture built on innovation and operational excellence, LLNL is a place where your expertise can make a real impact.

Position Information

This is a Postdoctoral appointment with the possibility of extension to a maximum of three years, or a maximum of two years for Sidney Fernbach Fellows, open to those who have been awarded a PhD at time of hire date.

Why Lawrence Livermore National Laboratory?

• Included in 2026 Best Places to Work by Glassdoor!
• Flexible  Benefits Package
• 401(k)
• Relocation Assistance
• Education Reimbursement Program
• Flexible schedules (*depending on project needs)
• Our values - visit  https://www.llnl.gov/inclusion/our-values

Security Clearance

None required.  However, if your assignment is longer than 179 days cumulatively within a calendar year, you must go through the Personal Identity Verification process.  This process includes completing an online background investigation form and receiving approval of the background check.

National Defense Authorization Act (NDAA)

The 2025 National Defense Authorization Act (NDAA), Section 3112, generally prohibits citizens of China, Russia, Iran and North Korea without dual US citizenship or legal permanent residence from accessing specific non-public areas of national security or nuclear weapons facilities.  The restrictions of NDAA Section 3112 apply to this position.  To be qualified for this position, Candidates must be eligible to access the Laboratory in compliance with Section 3112.

Pre-Employment Drug Test

External applicant(s) selected for this position must pass a post-offer, pre-employment drug test. This includes testing for use of marijuana as Federal Law applies to us as a Federal Contractor.

Wireless and Medical Devices

Per the Department of Energy (DOE), Lawrence Livermore National Laboratory must meet certain restrictions with the use and/or possession of mobile devices in Limited Areas. Depending on your job duties, you may be required to work in a Limited Area where you are not permitted to have a personal and/or laboratory mobile device in your possession.  This includes, but not limited to cell phones, tablets, fitness devices, wireless headphones, and other Bluetooth/wireless enabled devices.

If you use a medical device, which pairs with a mobile device, you must still follow the rules concerning the mobile device in individual sections within Limited Areas.  Sensitive Compartmented Information Facilities require separate approval. Hearing aids without wireless capabilities or wireless that has been disabled are allowed in Limited Areas, Secure Space and Transit/Buffer Space within buildings.

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Please be aware of recruitment scams where people or entities are misusing the name of Lawrence Livermore National Laboratory (LLNL) to post fake job advertisements. LLNL never extends an offer without a personal interview and will never charge a fee for joining our company. All current job openings are displayed on the Career Page under “Find Your Job” of our website. If you have encountered a job posting or have been approached with a job offer that you suspect may be fraudulent, we strongly recommend you do not respond.

To learn more about recruitment scams:  https://www.llnl.gov/sites/www/files/2023-05/LLNL-Job-Fraud-Statement-Updated-4.26.23.pdf

Equal Employment Opportunity

We are an equal opportunity employer that is committed to providing all with a work environment free of discrimination and harassment. All qualified applicants will receive consideration for employment without regard to race, color, religion, marital status, national origin, ancestry, sex, sexual orientation, gender identity, disability, medical condition, pregnancy, protected veteran status, age, citizenship, or any other characteristic protected by applicable laws.

Reasonable Accommodation

Our goal is to create an accessible and inclusive experience for all candidates applying and interviewing at the Laboratory.  If you need a reasonable accommodation during the application or the recruiting process, please use our online form to submit a request.

California Privacy Notice

The California Consumer Privacy Act (CCPA) grants privacy rights to all California residents. The law also entitles job applicants, employees, and non-employee workers to be notified of what personal information LLNL collects and for what purpose. The Employee Privacy Notice can be accessed here .