George is a Principal Researcher at the ATHENA Research and Innovation Centre. His research interests are in the area of cloud computing, big data management and analytics, working in problems related to scalable visual analytics, data pipelines, knowledge graphs and data evolution. He obtained his Diploma and PhD in Computer Science from the National Technical University of Athens (NTUA). He has been adjunct researcher in NTUA, University of Athens, National Centre for Social Research and University of Ioannina and worked as an external IT expert in various private and public organizations in the design and implementation of large-scale IT projects. He has participated and coordinated more than 20 EU and National funded projects, related to Big Data, AI, Cloud computing and research Infrastructures. He has coedited 1 book, 3 chapters in books and more than 80 publications in international conferences and journals in the areas of big data management and analytics. Three of his articles have been selected as Best Papers. He is the Project Coordinator of ExtremeXP project.