Jamie Callan is a Professor at the Language Technologies Institute, a graduate department in Carnegie Mellon's School of Computer Science. He has a joint appointment in the School of Information Systems and Management within CMU's Heinz College. His research and teaching focus on text-based information retrieval and analysis. His recent work develops advanced search engine architectures, architectures for large-scale distributed search, federated search of vertical search engines, expert finding in social media, adaptive information filtering, and a variety of text analysis/mining/analytics methods. Jamie has published more than 150 research papers on these and related subjects. Jamie's scientific service includes annual participation on the program committees of the major information retrieval conferences. He is a past Treasurer and past Chair of SIGIR, the international professional society for Information Retrieval research, a co-founding Editor-in-Chief of Foundations and Trends in Information Retrieval, and a past Editor-in-Chief of ACM's Transactions on Information Systems (TOIS).