Refine Search Clear All

Career Areas

Show More

Experience Level

Employment Type



Show More

Security Clearance

Keyword Search

Back to open positions

Nuclear Emergency Support Team (NEST) Diagnostician

Mid-Senior Level | Full-time
Engineering | livermore, CA | 11/12/2021

Apply Now  

Company Description

Join us and make YOUR mark on the World!

Are you interested in joining some of the brightest talent in the world to strengthen the United States’ security? Come join Lawrence Livermore National Laboratory (LLNL) where our employees apply their expertise to create solutions for BIG ideas that make our world a better place.

We are looking for individuals that demonstrate an understanding of working in partnership with team peers, who engage, advocate, and contribute to building an inclusive culture, and provide expertise to solve challenging problems.

Job Description

We have an opening for a Nuclear Diagnostician to support Global Security’s Nuclear Emergency Support Team (NEST) and Nuclear Counter Terrorism and Counter Proliferation (NCTCP) Programs. You will work as part of a dynamic and diverse team to provide computational and modeling support to the NEST research efforts and operations. You will be required to work at LLNL in Livermore, and travel to offsite locations and facilities. This position will report programmatically to the NEST Nuclear Diagnostics Lead and administratively to the Nondestructive Evaluation Group (NDE) within the Materials Engineering Division (MED).
In this role you will    

  • Model radiation detector responses of nuclear systems and communicate results to experts and non-experts in this field.
  • Perform experiments and interpret results to validate existing models and build new detector models and response functions.
  • Participate in measurement and training campaigns employing significant quantities of nuclear material in subcritical experiments and benchmarks.
  • Train non-expert emergency response personnel on diagnostic tools within the context of their operational procedures.
  • Under limited direction effectively manage concurrent technical projects with competing priorities in a multi-disciplinary team environment, ensuring commitments and deadlines met are important to project success.
  • Provide diagnostic support to various programmatic tasks in collaboration with scientist, engineers, technicians.
  • Travel domestically and internationally up to 25% time, for support and customer interaction.
  • Perform other duties as assigned.


  • Ability to obtain and maintain a U.S. DOE Q-level security clearance which requires U.S. Citizenship.
  • Master’s Degree in nuclear engineering, relevant scientific discipline (nuclear physics, particle physics, radiochemistry), or the equivalent combination of education and prior relevant experience.
  • Relevant experience programming in C, C++, Python, or related languages.
  • Experience in the application of statistics and/or machine learning to data interpretation and analysis.
  • Broad understanding of non-destructive analysis techniques, nuclear spectroscopy, Feynman variance-to-mean analysis, or other analytical methods and techniques.
  • Experience with radiation detection equipment and interpretation of particle interactions in diverse materials and environments.
  • Proficient verbal and written communication and interpersonal skills necessary to effectively collaborate in an interdisciplinary team environment and present technical information to external sponsors and customers.
  • Ability to devise solutions for unique and complex problems in situations that may not be well defined.
  • Ability to reprioritize and change programmatic direction depending on emergent requests and in collaboration with a variety multidisciplinary teams and external organizations.

Qualifications We Desire

  • Prior experience working with nuclear material and radiation safety techniques.
  • Prior experience working with particle transport codes such as GEANT or MCNP.
  • Prior experience working in an emergency response environment at the state or local level, or within Federal agencies such as: DoD, DoJ, or DHS.

Additional Information

Why Lawrence Livermore National Laboratory?

  • Included in 2020 Best Places to Work by Glassdoor!
  • Work for a premier innovative national Laboratory
  • Comprehensive Benefits Package
  • Flexible schedules (*depending on project needs)
  • Collaborative, creative, inclusive, and fun team environment

Learn more about our company, selection process, position types and security clearances by visiting our Career site

Security Clearance

LLNL is a Department of Energy (DOE) and National Nuclear Security Administration (NNSA) Laboratory.  Most positions will require a DOE L or Q clearance (please reference Security Clearance requirement).  If you are selected, we will initiate a Federal background investigation to determine if you meet eligibility requirements for access to classified information or matter. In addition, all L or Q cleared employees are subject to random drug testing.  An L or Q clearance requires U.S. citizenship.  If you hold multiple citizenships (U.S. and another country), you may be required to renounce your non-U.S. citizenship before a DOE L or Q clearance will be processed/granted.  For additional information please see DOE Order 472.2.

Equal Employment Opportunity

LLNL is an affirmative action and equal opportunity employer that values and hires a diverse workforce. 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.

If you need assistance and/or a reasonable accommodation during the application or the recruiting process, please submit a request via our online form

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.

Apply Now