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Mechanical/Structural Engineer

Mid-Senior Level | Full-time
Engineering | livermore, CA | 10/25/2021

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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 essential to innovation and creativity for continued success of the Laboratory’s mission.

Job Description

We have multiple openings for Mechanical/Structural Engineers with a strong background in nonlinear, dynamic, mechanical and structural analysis. You will support fundamental research, advanced development, as well as practical design and assessment efforts of complex systems using nonlinear, multi-physics analysis codes developed at Lawrence Livermore National Laboratory (LLNL). Your efforts will support a variety of internally and externally sponsored national security related projects aligned with the broader mission of LLNL. These positions are in the Computational Engineering Division (CED).

These positions will be filled at either level based on knowledge and related experience as assessed by the hiring team. Additional job responsibilities (outlined below) will be assigned if hired at the higher level. 

In this role you will 

  • Perform analysis of complex mechanical systems subject to nonlinear, high-rate loading with emphasis on state-of-the art computational techniques and constitutive behavior to evaluate the post-failure response of materials and structures.
  • Work independently to effectively manage concurrent technical tasks with competing priorities in a multi-disciplinary team environment, where commitments and deadlines are important to project success.
  • Participate and collaborate in training, briefings, or other program-related events, including contributing to meetings with sponsors, other DOE Laboratories, and U.S. government agencies, which will require occasional travel.
  • Contribute to the fulfillment of project and organizational goals, working as a member of a project team in a dynamic environment to fulfill results and share relevant knowledge, analysis, and recommendations with team members, collaborators, and project leadership.
  • Document methods and implementation in informal and formal reports and presentations.
  • Perform verification analyses to check computational methods against analytical solutions and verify that methods converge.
  • Ensure appropriate security requirements are met for all levels of classified/unclassified information under your direct control.
  • Perform other duties as assigned.

Additional job responsibilities, at the SES.3 level

  • Independently resolve technical objectives and criteria to satisfy project objectives and execute the appropriate technical approaches.
  • Apply advanced technical knowledge and methodologies to guide the successful completion of project and organizational goals and serve as the primary technical contact on tasks and projects.
  • Collaborate with technical area leaders, project leaders, and program management to represent technical capabilities and project results to internal management and external sponsors.


  • Ability to secure and maintain a U.S. DOE Q-level security clearance which requires U.S. citizenship.
  • Master’s degree in mechanical engineering, aerospace engineering, structural engineering, structural/applied mechanics or related field, or an equivalent combination of education and related experience.
  • Comprehensive knowledge and relevant experience in computational structural mechanics, with depth in at least one of these areas: material damage and failure mechanisms, high-rate system dynamics (e.g., penetration mechanics, hydrodynamics, or shock physics), thermo-mechanical response of systems, or laser-matter interaction.
  • Experience using relevant finite element modeling and simulation tools and analytical models for engineering problem solving, with an emphasis on nonlinear, high-strain rate dynamic analysis and building large geometrically complex models.
  • Experience using programming or scripting languages (such as Python or Perl) to manipulate data and text to help facilitate technical analysis.
  • Experience documenting research results in formal reports.
  • Proficient verbal and written communication skills necessary to effectively collaborate in a team environment and present and explain technical information.
  • Ability to work independently and as a member of a multidisciplinary team.

Additional qualifications at the SES.3 level

  • Advanced knowledge and significant experience in computational structural mechanics, with particular depth in at least one of these areas: material failure, high-rate system dynamics, thermo-mechanical response of systems, or laser-matter interaction.
  • Advanced knowledge of state-of-the-art modeling and simulation capabilities.
  • Advanced verbal and written communication skills needed to effectively collaborate in a team environment, present and explain technical information, document work, prepare and present successful proposals and high quality research papers, and provide advice to management.

Qualifications We Desire

  • PhD in mechanical engineering, aerospace engineering, structural engineering, structural/applied mechanics or related field.
  • Demonstrated knowledge of advanced constitutive models for metals, composites, ceramics, foams, geologic materials, or polymers.
  • Experience conducting computational analysis in a multi-physics context on massively parallel computer systems.

Additional Information

Why Lawrence Livermore National Laboratory?

  • Included in 2021 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

COVID-19 Vaccination Mandate

LLNL demonstrates its commitment to public safety by requiring that all new Laboratory employees be immunized against COVID-19 unless granted an accommodation under applicable state or federal law. This requirement will apply to all new hires including those who will be working on site, as well as those who will be teleworking.

Security Clearance

LLNL is a Department of Energy (DOE) and National Nuclear Security Administration (NNSA) Laboratory.  Some positions will require a DOE L or Q clearance (please reference Security Clearance requirement above).  If you are selected and a clearance is required, 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.  For additional information please see DOE Order 472.2.

Pre-Employment Drug Test

External applicant(s) selected for this position will be required to 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.

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.

LLNS is committed to offering reasonable accommodations during the application and recruiting processes due to a disability.  If you need assistance or an accommodation due to a disability, 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.

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