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Nuclear Criticality Safety Postdoctoral Research

Remote / Online - Candidates ideally in
Livermore, Alameda County, California, 94551, USA
Listing for: LLNL
Remote/Work from Home position
Listed on 2026-09-12
Job specializations:
  • Research/Development
    Research Scientist
  • Engineering
    Research Scientist
Salary/Wage Range or Industry Benchmark: 135768 USD Yearly USD 135768.00 YEAR
Job Description & How to Apply Below
Position: Nuclear Criticality Safety Postdoctoral Research Staff

Nuclear Criticality Safety Postdoctoral Research Staff

  • Full-time
  • Organization: ESH and Quality
  • Category:
    Environmental, Safety & Health
  • Employee Referral Bonus:
    Not applicable
  • Job Code 1: PDS.
    1 Post-Dr Research Staff 1
  • Pre-Employment Drug Test:
    Required for external applicant(s) selected for this position (includes testing for use of marijuana)
  • Pre-Placement Medical Exam:
    Not applicable
  • Security Clearance:
    Anticipated DOE Q clearance (requires U.S. citizenship and a federal background investigation)
  • Position Type:
    Post Doctoral

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.

We have an opening for a Postdoctoral Researcher with experience in one or more of the following areas: nuclear physics; nuclear engineering; radiation transport;
Multiphysics simulation. We are seeking a creative and flexible individuals who meets the scientific requirements and whose skills are aligned with the research mission of the National Nuclear Criticality Safety Program. This position will require interaction with professional colleagues inside and outside of the Laboratory and is located in the Nuclear Criticality Safety Division within the Environment, Safety and Health Directorate.

This position offers a hybrid schedule, blending in-person and virtual presence. The ability to work from home one or more days per week.

You will
  • Collaborate in the design, modeling, and analysis of laboratory critical and subcritical experiments.
  • Collaborate in the development of radiation measurement instrumentation and measurement of radiation fields.
  • Design and oversee fabrication of equipment as required.
  • Develop experimental procedures as required and guide them through safety and management reviews.
  • Assist in performing criticality safety evaluations of laboratory work.
  • Publish research results in peer-reviewed scientific or technical journals and present results at external conferences, seminars, and/or technical meetings.
  • Perform other duties as assigned.
  • Ability to secure and maintain a U.S. DOE Q-level security clearance which requires U.S. citizenship.
  • PhD in Nuclear Engineering, Physics, or related field.
  • Experience with radiation transport methods, such as MCNP, SCALE, GEANT, COG, Serpent, OpenMC etc.
  • Experience in computational physics and working knowledge of one or more programming languages (Python, FORTRAN, C++, etc).
  • Demonstrated proficient verbal and written communication skills necessary to author technical and scientific reports, proposals, publications and deliver scientific presentations.
  • Ability to work independently as well as in multidisciplinary research teams.
  • Ability to provide in-depth analyses and develop unique technical solutions.
Qualifications We Desire
  • Active DOE Qclearance.
Pay Range

$135,768 Annually

This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting; pay will not be below any applicable local minimum wage. An employee’s position within the salary range will be based on several factors including, but not limited to, specific competencies, relevant education, qualifications, certifications, experience, skills, seniority, geographic location, performance, and business or organizational needs.

#LI-Onsite

Position Information

This is a Postdoctoral…

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