He was a Research Scientist with Bellcore/Telcordia Technologies, Morristown, NJ, USA, from 1998 to 2001, and a Senior Scientist with Telcordia Technologies, Piscataway, NJ, USA, from 2008 to 2010. He was with the Department of Computer Science, National Tsing Hua University (NTHU), Hsinchu, Taiwan, as an Assistant Professor, an Associate Professor, and a Professor from 2001 to 2008. He was also the Director of the Institute of Network Engineering with National Chiao Tung University (NCTU), Hsinchu, from 2011 to 2014. He has been a Faculty Member with NCTU since 2010. He is currently a Distinguished Professor with the Department of Computer Science, NCTU. He is also serving as the Convener, Computer Science Program, Ministry of Science and Technology, Taiwan. Dr. Chen received numerous awards, including the Outstanding Teaching Award, NCTU, the Outstanding I. T. Elite Award, Taiwan, the Mentor of Merit Award from NCTU, the K. T. Li Breakthrough Award from the Institute of Information and Computing Machinery, the Outstanding Professor of Electrical Engineering from the Chinese Institute of Electrical Engineering, the Outstanding Research Award from the Ministry of Science and Technology, the Outstanding Teaching Award from NTHU, the best paper award forYoung Scholars from the IEEE Communications Society Taipei and Tainan Chapters, and the IEEE Information Theory Society Taipei Chapter, and the Telcordia CEO Award. He is a Fellow of the IEEE and a Distinguished Member of the ACM. He is a member of the Fellows Evaluation Committee, IEEE Computer Society, 2012 and 2016.