Christos Zaroliagis received his PhD in computer science from the Department of Computer Engineering & Informatics of the University of Patras, Patras, Greece, in 1991. He is currently a Professor in the Department of Computer Engineering & Informatics, University of Patras, and a Senior Research Associate in the Computer Technology Institute (CTI), Patras, Greece. He held previous positions at the Max-Planck-Institut für Informatik (1993-1998), Saarbrücken, Germany, and the Department of Informatics, King's College, University of London (1998-1999), UK. He is the head of the ALGOCUR Research Group specializing in the areas of efficient algorithms and data structures, algorithm engineering, parallel and distributed computing, combinatorial optimization, large-scale network optimization, robust and online optimization, transport optimization, cryptography and information security, and web searching and applications. He has extensively published in major international journals and conferences and has received numerous invitations from international conferences and leading academic institutions to give talks about his work. He is editor of the Journal of Discrete Algorithms (Elsevier), and has served as member in several conference committees. He is also the Director of the Laboratory for Computing (Computer Center) at the Department of Computer Engineering & Informatics, which provides ICT infrastructure and services to more than 3500 users. Christos Zaroliagis received the prize award 2012 for Academic and Scientific Excellence awarded by the Greek Ministry of Education and Religious Affairs in the field of mathematics and information sciences.