Before joining CU Boulder in 2016, David Marshall was a senior fellow at Teledyne Scientific Co. and Rockwell Science Center, where he worked with NASA, various Department of Defense agencies, universities and companies on developing high-temperature materials and structures for aerospace propulsion and thermal protection. While at Teledyne, he led the NASA/AFOSR-funded National Hypersonic Science Center for Materials and Structures and was an adjunct professor in the Materials Department at UC Santa Barbara. Previously, he held research positions at the UC Berkeley and the University of New South Wales, Australia. His graduate studies were at Monash University, Australia. His research interests include strengthening, toughening, reliability, microstructural design and processing of advanced materials, especially fiber-reinforced ceramic composites and structural ceramics. He was named Teledyne Scientific & Imaging Technologist of the Year in 2008. He is a member of the National Academy of Engineering, a member of the World Academy of Ceramics, and a distinguished life member of the American Ceramic Society.