Dr. Eleni Tzirita Zacharatou has been a Senior Researcher at DIMA since October 2019. She received her Ph.D. in Computer Science at École Polytechnique Fédérale de Lausanne (EPFL) in 2019, under the supervision of Professor Anastasia Ailamaki. Her thesis on “Efficient Query Processing for Spatial and Temporal Data Exploration” revisited the design of query processing techniques and access methods to support scalable and interactive spatio-temporal data analytics. Her research results have been published in premier data management venues (like VLDB, CIDR, ICDE) and her work has received the “SIGMOD 2018 Best Demonstration Award”. She is currently working on data management tools to better support data science workloads over large collections of spatio-temporal data and is further interested in robust stream processing in mobile IoT environments.