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Effects Modeling Analyst

Mid-Senior Level | Full-time
Engineering | livermore, CA | 10/18/2023

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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 committed to a diverse and equitable workforce with an inclusive culture that values and celebrates the diversity of our people, talents, ideas, experiences, and perspectives. This is important for continued success of the Laboratory’s mission.

Pay Range


$127,680 - $163,968 Annually for the SES.2 level

$153,210 - $196,788 Annually for the SES.3 level

Please note that the pay range information is a general guideline only. Many factors are taken into consideration when setting starting pay including education, experience, the external labor market, and internal equity.

Job Description

We have an opening for a staff position to perform analysis and research in the area of fireball-to-fallout physics and nuclear weapon effects. You will be part of an interdisciplinary team that seeks to improve understanding of the effects of nuclear weapons in complex environments for strategic assessments, emergency management, and post-detonation nuclear forensics. This includes validating and applying high-fidelity computer codes that simulate a variety of nuclear weapon effects such as shockwave effects, thermal pulse effects, cloud rise, and nuclear fallout. This position is within the Computational Engineering Division of the Engineering Directorate.

In this role you will


  • Perform computer simulations of nuclear weapon fireball dynamics, including effects on structures and debris formation and entrainment, and cloud rise simulations including the transport and evolution of debris.
  • Conduct research in and development of one or more of the following areas: shockwave physics, thermal radiation heat transfer phenomena, debris formation and microphysics, particle transport and dispersion.
  • Validate advanced hydrodynamics, cloud rise, and fallout codes using data obtained from a range of experiments, including historical nuclear tests.
  • Publish research results technical reports, journal publications, and present results at external conferences seminars and/or technical meetings.
  • Collaborate with others in a multidisciplinary team environment to accomplish research goals.
  • Participate in the establishment of future research directions and contribute to group grant proposals, including proposal presentations and preparation of proposals.
  • Perform other duties as assigned.


Additional job responsibilities, at the SES.3 level

  • Pursue independent (but complementary) research interests and interact with a broad spectrum of scientists internally and externally to define and carry out the research.
  • Routinely interact with professional colleagues, mid‐level management, and sponsors across and outside Laboratory.
  • Guide the successful completion of projects and contribute to the development of organizational goals.


  • Ability to secure and maintain a U.S. DOE Q-level security clearance which requires U.S. citizenship.
  • PhD in engineering, Physics or a related field or equivalent combination of education and related experience.
  • Experience in one or more of the following: shockwave physics, thermal radiative heat transfer, particle dynamics and microphysics, large-eddy simulation, fallout modeling, and running complex applications on high performance computing systems.
  • Ability to conduct high quality independent research and to develop implementations to evaluate the results.
  • Proficient verbal and written communication skills necessary to interact in a clear and concise manner, author technical and scientific reports and papers, and deliver scientific presentations.
  • Initiative and interpersonal skills and ability to work in a dynamic, multidisciplinary team environment.

Additional qualifications at the SES.3 level

  • Significant experience providing innovative approaches and applying new technical approaches to broadly defined tasks and projects.
  • Advanced knowledge and experience applying effective analytical and problem-solving skills to complex problems.
  • Advanced verbal and written communication skills necessary to effectively collaborate in a team environment and present and explain technical information and provide advice to management.

Qualifications We Desire

  • Ability to develop independent research projects as demonstrated through technical reports and/or publications.

Additional Information

All your information will be kept confidential according to EEO guidelines.

Position Information

This is a Career Indefinite position, open to Lab employees and external candidates.

Why Lawrence Livermore National Laboratory?

Security Clearance

This position requires a Department of Energy (DOE) Q-level clearance.  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. Also, all L or Q cleared employees are subject to random drug testing.  Q-level clearance requires U.S. citizenship. 

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.

How to identify fake job advertisements

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:

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.

We invite you to review the Equal Employment Opportunity posters which include EEO is the Law and Pay Transparency Nondiscrimination Provision.

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.

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