Amentum
Mark is President of the Amentum Energy & Environment business, a 9,000 employee organization that delivers engineering, consulting, project integration and technology solutions to clients in over 20 countries. Previously, Mark served in other executive roles for Amentum, including President of the National Security Business Group. Prior to joining Amentum, he was the Executive Vice President and General Manager for the Nuclear & Environment Strategic Business Unit at AECOM. Mark has held a number of senior executive service roles within the U.S. Department of Energy (DOE) and the National Nuclear Security Administration, including as the Principal Deputy Assistant Secretary for DOE’s Office of Environmental Management.