He received the B.Sc. degree from the Computer Science Department at Aristotle University of Thessaloniki (AUTH) in 2002, and the Ph.D. degree from the Department of Computer Science and Engineering at Hong Kong University of Science and Technology (HKUST) in 2006. His main research area is spatial and spatiotemporal databases, with a focus on continuous query processing, road network databases, and spatial optimization problems. He has also worked on preference-based queries, wireless broadcasting systems, and outsourced database authentication. He has published at and been involved in the programme committees of most major database conferences, including SIGMOD, VLDB and ICDE. At SMU he teaches Data Management (IS202) and Advanced Data Management (IS410).