Xuechen Liu is a Project Postdoctoral Researcher at the National Institute of Informatics in Tokyo, Japan. He holds a PhD in Computer Science from the University of Eastern Finland and has industrial experience at Emotech LTD. His research focuses on audio deepfake detection, speaker recognition, and multi-modal information retrieval. He has published extensively in speech and audio conference venues and journals and has been an organizing committee member of ASVspoof Challenges since 2021.