David DeWitt was a faculty member in the Computer Sciences Department at the University of Wisconsin-Madison from 1976 until he joined Microsoft as a Technical Fellow in March 2008. He served as department chair from 1999 to 2004. Dr. DeWitt is a member of the National Academy of Engineering and a Fellow of the American Academy of Arts and Sciences. His pioneering contributions to the field of parallel database systems were recognized by ACM with the 2009 Software Systems award. Currently, he manages the Jim Gray Systems Laboratory in Madison for Microsoft.