He was Assistant Professor (2013-2016) with AUEB. Before that, he was Assistant Professor (2010-2013) and Lecturer (2005-2010) with the Department of Computer Engineering and Communications, University of Thessaly. He received the single-investigator European Research Council (ERC) competition runner-up award for the project RECITAL: Resource Management for Self-coordinated Autonomic Wireless Networks (2012-2015). His research interests are in the general area of network control and optimization, with applications on wireless networks, social and community networks, crowd-sensing systems, smart-grid and cloud computing.