Academia
- Chair Professor (2018 ~ present), Distinguished Professor (2011-2017), Professor (2009-2011), Dept. of Electrical and Computer Engineering, National Chia Tung University
- Professor (2005 –2008), Associate Professor (2000-2005), Dept. of Communications Engineering, National Chiao Tung University, Taiwan
- Assistant Professor, National Tsing-Hua University, Taiwan (Feb. 2000 – Jul. 2000)
- Adjunct Professor, Dept. of Computer Science and Information Engineering, National Chiao Tung University (Feb. 2010 ~ present)
- Chairman, Department of Electrical and Computer Engineering, National Chiao Tung University, Taiwan (Aug. 2011 – July 2016)
- Director, Big Data Research Center, National Chiao Tung University, Taiwan, (2018/2-present.)
- Dean (2023.02~ present), College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University (NYCU)
Industry
- Software Technology Institute, Institute For Information Industry, Taiwan (2022/09-present)
- Senior Technical Staff Member, AT&T Labs – Research, USA, 1996 – 2000
- Distinguished Consultant, Industrial Technology Research Institute, Taiwan (2016/05-2020/12)
- Cisco Certified Academic Instructor (CCAI) in Taiwan CATC, Jan. 2002 – 2010)
- Co-Op, Northern Telecom, 1995
- Assistant Research Engineer, Telecommunications Labs. Ministry of Transportations and Communications, Taiwan, 1990–1992