Nikos Giatrakos is a Research Associate at the Information Management Systems Institute at Athena Research Center (Greece) and a Postdoctoral Research Associate at the School of Electrical and Computer Engineering of the Technical University of Crete (Greece). He received the Diploma degree in Computer Science from the University of Piraeus (Greece) in 2006, the MSc degree in Information Systems from the Athens University of Economics and Business (Greece) in 2007, and the PhD degree in Computer Science from the University of Piraeus (Greece) in 2012. His research interests include Big Data Analytics, Distributed Data Streams, Approximate Query Processing, Data Synopses, Complex Event Processing and Data Management Issues in Internet of Things platforms. He was a recipient of the Best Demo Award in ACM CIKM 2020.