· Director of the Cognitive Science Program, University of California, Berkeley2005–
· Founding Director, International Computer Science Institute (ICSI)1988–1998
· Professor of Electrical Engineering and Computer Science, University of California, Berkeley1988–
· Professor and Founding Chair of Computer Science Department, University of Rochester1974–1988
· Assistant Professor, Stanford University1966–1974
· Staff Member, MIT Lincoln Lab1964–1966
· Emeritus Director, Artificial Intelligence, International Computer Science Institute (ICSI)
· Westinghouse