Dimitrios Sarigiannis is an undergraduate student at Aristotle University of Thessaloniki in Greece and currently, an openlab summer student at CERN. He is interested in Information Systems, Cloud Computing, Large Scale distributed systems. In his thesis project, he developed and implemented density-based outlier detection algorithms in apache HADOOP framework. He is also a core team member of ACM AUTH Student Chapter and one of the official Android application developers of Thessaloniki European Youth Capital 2014. During his stay at CERN he has been working on a prototype project for SHIP grid-cloud framework.