About

Anup Singh

Anup Singh is the Principal Associate Director for Engineering — an organization of approximately 2,900 employees. As Principal Associate Director, Anup manages a team and facilities that cover the full range of the Lab’s world-class engineering expertise, manufacturing capabilities, and research to ensure the long-term success of its programs.     

Anup joined the Lab in 2021 after serving as director of the Center for Biological and Engineering Sciences at Sandia National Lab. There, he managed critical capabilities in support of Sandia's Energy & Homeland Security, Global Security, Nuclear Deterrence and Advanced Science, and Technology portfolios.    

“People first, mission always” is Anup’s guiding principle: he champions the multitude of workforce development programs in the directorate, including the Engineering Leadership Development Program and the Engineering Mentoring Program.

Anup is internationally recognized for his scientific leadership in microfluidics, having published more than 100 peer-reviewed publications and patented 40 inventions. He holds a bachelor of technology degree in chemical engineering from the Indian Institute of Technology, in Bombay, India, and a Ph.D. in chemical engineering from North Carolina State University. 

Shannon Ayers

Shannon Ayers is the Division Leader for the Laser Systems Engineering and Operations (LSEO) Engineering Division as well as a National Ignition Facility (NIF) Laser and Alignment Section (LASE) lead. LSEO is responsible for maintaining a vibrant workforce to support the engineering needs of the NIF&PS directorate, and LASE is responsible for the performance, operations, and maintenance of the NIF laser and alignment systems.   

Shannon came to the Lab in 1998 as an intern working on the extreme ultraviolet lithography project. She has been part of the NIF team for over ten years, where in addition to laser, target, and diagnostic alignment she led the successful development and deployment of many target diagnostics for use at the NIF, the Laboratory for Laser Energetics, and the Atomic Weapons Establishment.   

Prior to supporting NIF, Shannon served as project engineer and manager of several optics processing projects in support of the Global Security and Physical and Life Sciences directorates. When not supporting the NIF facility operations or capability enhancements, Shannon is engaged in workforce development efforts to support an environment that fosters innovation at LLNL. She holds a degree in mechanical engineering. 

Mike Goldman

Mike Goldman is the Division Leader for the Computational Engineering Division. This organization has approximately 300 engineering, scientific, mathematical, and administrative professionals with expertise in engineering modeling and simulation, data analytics and decision science, and signal and image processing. This collection of analytic expertise supports many Laboratory programs, external projects, and research collaborations.   

Since joining the Lab in 2007, Michael has spent his career working at the intersection of AI and national security. Michael serves as principal investigator for several internal and external projects related to overhead imagery, machine learning, data compression, and system development. From 2018 to 2023, he was the Director of LLNL's Data Science Institute.

He was previously the associate program in Global Security, leading several projects in the aerial intelligence, surveillance, and reconnaissance domain and executing work across a wide variety of NNSA/DOE, DOD, and IC stakeholders. Michael is also currently the Venture Manager for STEEL THREAD, a multi-lab effort under NNSA’s Defense Nuclear Nonproliferation Research and Development program, focused on building large-scale foundation models for nuclear nonproliferation.

Michael received his M.S. from UC Davis in Electrical and Computer Engineering and a B.S. from UC Santa Cruz in Computer Engineering.

Becky Nikolic

Becky Nikolic began her career at LLNL 22 years ago as a researcher in Engineering working for the N-Program, and now is the Division Leader for the National Security Engineering Division.

Becky has held various technical and leadership roles across the Laboratory, most recently as Director for Institutional S&T Assessments, overseeing the Institutional Assessment Program. From 2016–2023, Rebecca led several roles within the Global Security Directorate, including Deputy Program Manager for Energy and Homeland Security, Point of Contact for LDRD, and Associate Program Leader for the Nuclear Threat Reduction Program.

She also spent a decade as a group Leader at the Center for Micro and Nano Technology, where she advanced 3D-structured neutron detection systems to TRL 6 for DOE, DHS, and other government sponsors. She has published widely on semiconductor materials and devices, spanning application areas including communications, detection, and energy technologies. Her career includes over 20 awards and fellowships, including the Oppenheimer Science and Energy Leadership Program and Early Mid-Career Recognition.

Becky holds a Ph.D. in Electrical Engineering (Applied Physics) from UC San Diego and a B.S. in Electrical Engineering from UC Davis, with a certificate in National Security Affairs from Texas A&M University.

Travis Paladichuk

Travis Paladichuk is the Defense Technologies Engineering Division Leader, leading approximately 750 personnel to provide technical and strategic leadership in support of the Lab’s national security mission. In this role, Travis works closely with Strategic Deterrence management to meet weapons engineering needs for annual assessments, modernization programs, and evolving future deterrents. Previously, Travis was the Engineering Lead for the W80-4 Life Extension Program, with programmatic responsibility for $150 million annually.  

Travis began his career at LLNL in 2001, leading a weapon component project realization team to execute large-scale experiments to assess engineering and physics performance. He then took on the role of Engineering Lead for the Phoenix Program, designing and fielding complex explosive experiments used to develop equations of state for high-density material targets.   

He holds a B.S. in Mechanical Engineering from the University of California, San Diego and an M.S. in Mechanical Engineering from the University of California, Davis. He also served in the U.S. Army as a Combat Engineer.  

Chris Spadaccini

Chris Spadaccini is the Materials Engineering Division Lead and former Director of the Center for Engineered Materials and Manufacturing. He has been a member of the technical staff in the Materials Engineering Division for the past ten years. He is currently the principal investigator for several advanced materials and additive manufacturing projects. He is also the founder and director of a new additive manufacturing, process development, and architected materials center. 

The work in these laboratories focuses on developing next-generation additive processes that are capable of micro- and nano-scale features and have the ability to create components with mixtures of materials ranging from polymers to metals and ceramics. Development of these processes also involves the synthesis and materials science of feedstocks such as photopolymers and nanoparticles. These capabilities are utilized to fabricate microarchitected materials with unique designer properties, such as negative thermal expansion. 

Chris is also a part-time lecturer at the San Jose State University in the Biomedical, Chemical and Materials Engineering Department, where he teaches graduate courses in advanced transport phenomena. 

Chris's research interests include architected materials, metamaterials, advanced fabrication processes, additive manufacturing, topology optimization, energetic materials, fluid mechanics and combustion. 

He holds B.S., M.S., and PhD degrees from the Department of Aeronautics and Astronautics at MIT.

Rob Sharpe

Rob Sharpe serves as the Deputy Associate Director of Engineering Research and Development. In this capacity, he directs efforts in computational engineering, micro- and nano-technology, advanced measurement capabilities, and data analytics.  

Prior to joining the Lab, Rob was a design engineer with the Antenna Laboratory at Texas Instruments; a doctoral fellow in the electromagnetics applications center with TRW in Redondo Beach; and a faculty member at the University of Houston.

Rob joined LLNL in 1992 where he has held various positions including Director of the Center for Computational Engineering, Chief Technologist, Deputy Associate Director for Engineering Science and Technology, and the Division Leader for the Computational Engineering Division.    

Rob holds a B.S. in electrical engineering from Auburn University and an M.S. and D.Sc. in electrical engineering from the University of Houston. 

Donn McMahon

Donn McMahon is the Principal Deputy Associate Director for Engineering at the Lab. The Engineering Directorate employs over 2,900 multi-disciplinary engineering, science, technology, and support staff to anticipate, innovate, and deliver responsive engineering solutions to complex national security needs.  

Donn has broad responsibilities in directorate leadership, supporting the Lab’s national security and science programs, and promoting and advancing engineering capabilities and its workforce. He leverages his leadership, project management, and technical skills for the oversight of staff for project execution and the development of strategic relationships with Livermore’s Strategic Deterrence, Global Security, Security Organization, Environmental Restoration, and the National Ignition Facility (NIF) and Photon Science directorates.  

Donn believes in a collaborative and service-based leadership model and is committed to recruiting and developing a diverse set of outstanding next-generation engineers, scientists, and technical staff. 

Donn earned an S.B. from MIT in Mechanical Engineering and a Ph.D. and M.S. in Mechanical Engineering from the University of California, Berkeley with a specialization in Control Systems. 

Harry Martz

Harry Martz is the Director for Nondestructive Characterization Institute and a distinguished member of the technical staff at Lawrence Livermore National Laboratory. His work has pioneered ways to use x-rays and other forms of radiation and particles for noninvasive imaging of everything from warhead components to bridge decks to breast tumors. 

Harry's research has led to major advances in airport baggage scanning technology to detect explosive and non-explosive materials that terrorists try to sneak through airport security, as well as the development of better cargo scanning devices at major American sea, land, and airports.  

He has served on several National Academy of Sciences Committees on Aviation Security, was the Chair of the Committee on Airport Passenger Screening: Backscatter X-Ray Machines, and received an R&D Magazine 100 Award for his work on a mobile CT system to nondestructively assay thousands of waste drums at Department of Energy sites around the country. Harry has authored or co-authored over 300 papers and a book titled X-ray Imaging: Fundamentals, Industrial Techniques and Applications. 

Harry holds an M.S. and Ph.D. in Nuclear Physics/Inorganic Chemistry from Florida State University, and a B.S. in Chemistry from Siena College. 

Dan Tortorelli

Dan Tortorelli has served as the Director for Lawrence Livermore National Laboratory’s Center for Design and Optimization since its instantiation in 2016. He is also the George B. Grim Professor Emeritus of Mechanical Sciences and Engineering at the University of Illinois at Urbana-Champaign, a title given upon his retirement after a 26-year career on the faculty. 

Dan's interdisciplinary team develops software to optimize systems with respect to their structural, thermal, transport, fluidic, etc. performances. The software combines nonlinear programming and machine learning algorithms, finite element simulation, and high-performance computing strategies. 

Dan has a B.S. in mechanical engineering from University of Notre Dame and an M.A. and D.Sc. in mechanical engineering from University of Illinois at Urbana-Champaign. 

Eric Duoss

Eric Duoss is the Director of the Center for Engineered Materials and Manufacturing and a Member of the Technical Staff at LLNL, where he conducts research in the areas of advanced materials and manufacturing combined with micro-architected design. 

Eric's research interests include additive manufacturing, 3D printing, printed electronics, functional materials, colloids and complex fluids, soft matter, microfluidics, microencapsulation, and emulsion science. 

He holds B.S. degrees in mathematics and chemistry from St. Norbert College and a Ph.D. in materials science and engineering from the University of Illinois at Urbana-Champaign. 

Elizabeth Wheeler

Elizabeth Wheeler is currently serving as the Director of the Center for Bioengineering. She is also a staff scientist working in S Program.

She began her career at LLNL as a post-doctoral researcher working on NIF optics prior to joining the Center for Micro and Nano Technology. She has been involved with bioinstrumentation at LLNL for 14 years.  

The majority of her career has focused on integrating biology and engineering to yield new platforms or flexible devices for Homeland Security or medical applications. She has worked on numerous multidisciplinary teams that have field tested technology developed at LLNL. Currently she is a team member on a Bioprinting Vasculature project and the Principal Investigator for a DNA Tagged Reagents for Aerosol Experiments (DNATrax) project.  

In 2013, she won an R&D 100 award for her contributions to DNATrax. Her primary focus is currently the LDRD SI in-situ Chip-based Human Investigational Platform (iCHIP) project. 

Elizabeth earned a B.S. in chemical engineering from the University of California, Davis and M.S. and Ph.D. degrees in chemical engineering from Stanford University.

Jamie Bramwell

Jamie Bramwell is the director of the Center for Computational Engineering and a simulation software project leader working primarily on Smith, a next-gen finite element simulation toolkit supporting applications throughout the Engineering directorate.

Jamie joined LLNL in 2013 as a computational engineer with a specialty in advanced finite element methods. She began her career as an integrated code developer on ALE3D, a large-scale multi-physics simulation code supporting Strategic Deterrence. She was the primary developer for the implicit solid mechanics physics package, including modern structural element capabilities to support complex mission analysis efforts in NIF and modernizing infrastructure for numerical solver libraries.

In 2017, she joined the MFEM finite element library team as an engineering application specialist. This included developing a new cardiac mechanics simulation tool and experimental mini applications for user tutorials and examples. In 2020 she started the Smith project, a modular software development kit based on MFEM to enable agile development of GPU-ready and sensitivity-enabled high-fidelity engineering-scale simulations. Jamie earned her B.S. in mechanical engineering from Northwestern University, and her M.S. and Ph.D. degrees in Computational Science, Engineering, and Mathematics from the University of Texas at Austin.