· Research Scientist (Consultant), Bell Laboratories2006–2009
· Professor of Web Data Management, University of Edinburgh2006–
· Reader, University of Edinburgh2004–2006
· Research Scientist, Bell Laboratories2001–2005
· Assistant Professor, Temple University1999–2002
· PhD in Computer and Information Science, University of Pennsylvania1995–1999
· Co-founder and CTO, Huaguang Software Ltd1988–1993
· MS in Computer Science, Peking University1985–1988
· BS in Computer Science, Peking University1982–1985