In his research, he investigates information system support for cooperative activities in business, engineering, and culture. Jarke has served as coordinator of several European IST projects in the field of information systems engineering, and is currently area coordinator "Mobile Applications and Services" of Aachen's DFG-funded Excellence Cluster "Ultra-highspeed Mobile Information and Communication (UMIC)". He has published close to 300 books and refereed papers in journals and conferences, served as Editor-in-Chief of the journal "Information Systems" from 1993-2003 and as Program Chair of leading international conferences such as VLDB, CAiSE, EDBT, CoopIS, SSDBM, and others. From 2004-2007, he served as president of the German Informatics society GI.