• 2007 - Present
  San Jose State University, San Jose, U.S.A.
  Full Professor, Dept. of Computer Engineering
• 2002 - May 2007
  San Jose State University, San Jose, U.S.A.
  Associate Professor, Dept. of Computer Engineering
• 9/1998 - 2002
  San Jose State University, San Jose, U.S.A.
  Assistant Professor, Dept. of Computer, Information, and System Engineering
• 6/1997 - 9/1998
  San Jose State University, San Jose, U.S.A.
  Adjunct Professor, Dept. of Computer, Information, and System Engineering
• 9/94/ - 8/95
  The University of Texas at Arlington
  Instructor, Dept. of Computer Science and Engineering
• 2010 (Summer)
  Tsinghua University, China
  Visiting Professor, Computer Science Department National Key Lab.
• 2009 - Present
  Knowledge Systems Institute (KSI) USA
  Adjunction Professor, and Business Development and Marketing Director
• 2008 (Summer)
  Peking University, China
  Visiting Professor, Software Engineering School