Dr. Wei Cai is a tenure-track Assistant Professor of Computer Science and Systems at the School of Engineering and Technology, University of Washington, Tacoma, WA, USA. He is now leading the Collective, AI, and Interactive Systems (CAIs) Laboratory. He holds a Ph.D. in Electrical and Computer Engineering from The University of British Columbia (2016), an M.Sc. in Electrical Engineering and Computer Science from Seoul National University (2011), and a B.Eng. in Software Engineering from Xiamen University (2008). Prior to joining UW, Dr. Cai was an Assistant Professor of Electrical and Computer Engineering at The Chinese University of Hong Kong, Shenzhen, China. He has also conducted research visits at Academia Sinica (Taiwan), The Hong Kong Polytechnic University, and the National Institute of Informatics (Japan). Dr. Cai has co-authored over 100 peer-reviewed journal and conference papers and has received 7 Best Paper Awards. His research lies at the intersection of human-computer interaction, social computing, and AI, focusing on how individuals, communities, and AI systems interact in open digital ecosystems. He serves as an Associate Editor for IEEE Transactions on Mobile Computing (TMC), ACM Transactions on Multimedia Computing, Communications, and Applications (TOMM) and IEEE Transactions on Computational Social Systems (TCSS), and previously for IEEE Transactions on Cloud Computing (TCC). Dr. Cai is a Steering Committee member for ACM NOSSDAV, where he served as TPC co-chair in 2023, Associate Chair for ACM CHI'26, and has been an Area Chair for ACM MM since 2023. He is a Senior Member of IEEE and a member of ACM.