1. Assistant Professor, Department of Computer Science, NCTU, 2005-present
2. Research Assistant, Information Processing Lab(IPL), University of Washington, Seattle, Washington, USA, 2001-2005
3. Software/Research Engineer, HomeMeeting.com, Redmond , Washington, USA, 2000-2001
4. Research Assistant, Information Processing Lab (IPL) , University of Washington, Seattle, Washington, USA, 1999-2000
5. Electrical Engineer at Communication Research Lab(CRL) , the Ministry of National Defense, Taiwan, 1997-1999
待補