· Director of the Centre for Integrated Computer Systems Research, University of British Columbia (UBC)1986–1996
· Chair of the Computer Science Department, University of British Columbia (UBC)1984–1987
· Assistant Professor, University of British Columbia (UBC)1971–1984
· Professor Emeritus, University of British Columbia (UBC)1971–2002
· Assistant Professor, California Institute of Technology1969–1971
· Postdoctoral Researcher, National Research Council (NRC)1967–1968
· PhD in Computer Science, Stanford University1967–
· MS in Computer Science, Stanford University1965–
· Bachelor's degree, University of British Columbia (UBC)1963–
· Professor, University of British Columbia (UBC)