Turning Concepts into Reality

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Engineering on a Mission


LLNL’s Engineering Principal Directorate is a multidisciplinary, collaborative organization known for achieving breakthroughs in areas vital to our national security missions—from nuclear security and deterrence to cybersecurity to renewable energy. Our areas of expertise include materials engineering and manufacturing, computational engineering, optics and photonics, bioengineering, data science and machine learning, and sensing and diagnostics.

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Latest News

Still image from an MD simulation of a body-centered cubic (BCC) tantalum (Ta) single crystal.

Predicting metal plasticity with quantum-accurate crystal modeling

A Lawrence Livermore National Laboratory (LLNL) team recently described a new approach to developing models of crystal plasticity by calibrating their models against high-fidelity molecular dynamics (MD) simulations. To illustrate their approach, they focus on body-centered cubic (BCC) single crystal tantalum (Ta) which was modeled with a quantum-accurate interatomic potential.

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Help Us Build the Future of Engineering

From machinists to researchers to professional staff, Engineering is at the heart of LLNL. Learn how you can join in our mission.

Explore Engineering Careers

National Security Engineering Division Undergraduate Student Intern - Fall 2025 Apply Now  
Internship | Intern
Students | Livermore, CA | 2025-07-16T15:56:51.270Z
Applied Statistics (ASG) Group Leader Apply Now  
Mid-Senior Level | Full-time
Engineering | Livermore, CA | 2025-07-16T02:52:49.801Z
Engineering Principal Associate Director's Office Administrator - Active Security Clearance Required Apply Now  
Mid-Senior Level | Full-time
Administrative | Livermore, CA | 2025-07-15T18:39:17.398Z
High-Temperature Materials Analyst Apply Now  
Mid-Senior Level | Full-time
Engineering | Livermore, CA | 2025-07-15T17:29:10.398Z
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Research and Innovation

Engineering at LLNL integrates theory, experimentation, and simulation to produce groundbreaking technologies aimed at addressing national security challenges. At the same time, many of our leading-edge concepts and innovations have been translated into commercial products that improve everyday life in novel and practical ways.

Director's Office

Bioengineering

Addressing challenges to human health and safety—from modeling antibodies’ potential to anticipating bioterrorism, LLNL has a long history of delivering bioengineering enabled solutions.

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Engineering

Advanced Manufacturing and Materials Engineering

Trailblazing materials science and engineering innovation and advanced manufacturing to design and fabricate unique structures and components, micro-nano technologies, and more as we support endeavors across LLNL.

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Global Security

Optics and Photonics

Designing and operating the optical systems and photonics associated with our National Ignition Facility (NIF), telescopy, and micro- and nanotechnologies.

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National Ignition Facility and Photon Science

Systems Engineering

Engaging in readiness activities aimed at stockpile custodianship, explosives material development, and initiation systems. This area includes space science engineering, sensor development, technology maturation, and weapons engineering.

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Two CED engineers work on Skyfall

Computational Engineering and Data Science

Exploring the world virtually, through modeling and simulation or data science, is an essential complement to physical experimentation, permitting us to examine broader ranges of behavior and potential design solutions.

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Our Mission

LLNL Engineering provides the research, design, and execution behind some of the world’s most rigorous and complex engineering projects to support the Lab’s government-funded missions. We also collaborate with industry and academia to develop some of the world’s most sophisticated products, processes, and specialized instruments.

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