Mechanical​/Structural Analyst

Mechanical/Structural Engineering Analyst

We have multiple openings for Mechanical/Structural Engineering Analysts with a strong background in solid mechanics and finite element analysis (FEA) to support Lawrence Livermore National Laboratory (LLNL) stockpile programs. In this role, you will perform computational modeling and simulation using advanced, nonlinear finite element analysis codes developed at LLNL to evaluate structural and material responses to combined thermal, quasi‑static or dynamic, and hydrodynamic loads under time‑dependent kinematic conditions.

You will contribute to research and development in advanced simulation capabilities, including constitutive modeling, Simulation Process and Data Management (SPDM), as well as Verification, Validation, and Uncertainty Quantification. Your work will support engineering design, testing, and certification of the nation’s nuclear weapon systems through both advanced development and practical design and assessment initiatives. These positions are in the Weapon Analysis and Methods (WAM) section within the Computational Engineering Division (CED) of the Engineering Directorate.

• Contribute to and actively participate in the conception, development, implementation, execution, and documentation of FEA models of structural systems and their mechanical components, with emphasis on state‑of‑the‑art computational techniques and constitutive modeling to evaluate the responses of structures and materials subjected to thermal, time‑dependent displacement, and structural loads.
• Perform engineering analysis with limited guidance using FEA models and other solution methods to support stakeholders in design, modification, optimization, testing, and certification of nuclear weapon systems.
• Thoroughly document solution approaches, activities, sequences, requirements, and implementation practices including corresponding engineering assumptions, and present and explain analysis results to the team, as well as internal and external stakeholders.
• Collaborate and communicate with multi‑disciplinary teams of engineering analysts, code developers, design engineers, and subject matter experts using established workflows, standards, and verification/validation best practices to solve moderately complex technical problems with limited direction within the scope of the assignment.
• Participate in and contribute to design reviews, training, briefings, or other program‑related events, including describing analyses, input assumptions, potential enhancements, and current limitations during meetings with sponsors, other DOE Laboratories, and U.S. government agencies, which will require occasional travel.
• Perform other duties as assigned.

• Provide technical leadership and guidance to project teams developing state‑of‑the‑art methods and applying research results to meet programmatic goals, while balancing priorities of customers and partners to ensure deadlines are met.
• Solve abstract and complex problems as required, using in‑depth analysis, and drawing from advanced level technical knowledge, best practices, and both routine and innovative techniques and approaches.
• Serve as the primary technical point of contact for program managers internally and at sponsor and partner organizations by sharing relevant advanced level knowledge, providing opinions and recommendations on methodologies, and exerting influence as needed to fulfill deliverables and best meet sponsor needs.
• Mentor and advise LLNL scientists and engineers in finite element analysis best practices.

• Ability to secure and maintain a U.S. DOE Q‑level security clearance which requires U.S. citizenship.
• Master’s degree in mechanical, structural, or aerospace engineering, structural/applied mechanics, or related technical field, or the equivalent combination of education and related experience.
• Proficient interpersonal, communication, and organizational skills necessary to perform required duties, work and collaborate in a multidisciplinary team environment, and to present and explain technical information to a wide variety of audiences.
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