As the Labs Director for Sandia National Laboratories, Stephen Younger provides leadership and management direction for the safe, secure execution of all
Prior to joining Sandia, Steve contributed 34 years of distinguished service at the Nevada National Security Site (NNSS), Los Alamos National Laboratory (LANL), Lawrence Livermore National Laboratory (LLNL), and the Defense Threat Reduction Agency (DTRA). He was Vice President and Chief Technologist for Northrop Grumman Technology Services, and served on the Board of Managers for National Security Technologies, LLC, (NSTec), the M&O contractor for NNSS. From 2006 to 2012, as President of NSTec, he led NNSS through evolving and broader nuclear security missions. From 2001 to 2004, he was the Director of DTRA, a component of the U.S. Department of Defense whose mission is to reduce the threat of weapons of mass destruction.
Before his government service, Steve was Senior Associate Director for National Security at LANL, responsible for ensuring the safety and reliability of most of America’s nuclear deterrent. From 1982 to 1989, he was
a nuclear weapons designer at LLNL, where he developed and oversaw testing of several new concepts in nuclear explosives. He also served as Computational Atomic Theorist at the National Bureau of Standards.
Steve is a Fellow of the American Physical Society and has published extensively in atomic theory, plasma physics, anthropology, and national security.