Dr. Vassileios Tsetsos received his B.Sc. in Informatics from the Department of Informatics & Telecommunications at the University of Athens, Greece in 2003 and his M.Sc. in "Communication Systems and Data Networks" from the same Department in 2005. In 2010 he received his Ph.D. from the same department. He is a member of the Communication Networks Laboratory (CNL) of the University of Athens and the Pervasive Computing Research Group. Since 2010 he holds the position of CTO at Mobics Ltd. He has participated in R&D projects funded by the EU FP5 and FP7 programmes, and in several national research projects. He is currently scientific supervisor and coordinator in various European and national R&D projects. His research interests are in the areas of middleware for context-aware services and knowledge engineering.