Konstantinos Togias was born in 1978. He received his Diploma in Mathematics (in 2000) from the Department of Mathematics, Univ. of Patras, Greece, and his M.Sc (in 2007, in Mathematics of Computation and Decision Making), from the Department of Mathematics and the Department of Computer Engineering and Informatics, Univ. of Patras, Greece. Since 2008, he is a PhD candidate at the School of Science and Technology, Hellenic Open University, Greece. He has been a Laboratory Assistant with the Department of Telecommunication Systems and Networks, ΤΕΙ of Messolonghi, Nafpaktos (2010 – 2011) and Department of Bussiness Planning and Information Systems, TEI of Patras (2012-20133). Since 2000, he has participated as a researcher in several R&D projects led by the School of Electrical and Computer Engineering, N.T.U.A., Greece, the Department of Computer Engineering and Informatics, Univ. of Patras, Greece, the Hellenic Open University, Patras, Greece, the Computer Technology Institute and Press "Diophantus" (CTI), Patras, Greece, and the Technological Educational Institute of Patras, Greece. Since 2011, he works for the Greek School Network and Networking Technologies Directorate of CTI, as a member of the development and operation of advanced e-services and Internet applications for e-Government team. He has participated as researcher in several EU R&D projects. Examples are the IST projects Astra and Atraco and the LLP projects SoRuraLL and VAB. He has published 1 journal article and 4 conference paper. He speaks Greek, English and French. His current research interests include knowledge engineering, extraction and representation, engineering and application of ontologies, social and semantic web, and open source software. He participates in open source and free software communities, including the Greek Community of Ubuntu Linux (Ubuntu-gr) and the Patras Linux User Group (PatrasLUG).