I am a Principal Researcher with the Centre for Research and Technology Hellas (CERTH), the Information Technologies Institute, and part of the Multimedia Knowledge and Social Media Analytics Lab (MKLab). I am currently leading the MeVer group, a team of approximately 30 researchers and engineers working in a number of projects at the intersection of Artificial Intelligence, Media, Multimedia Retrieval and Intelligent Network Analytics. In particular, during the last years, I have been interested in the topics of AI bias, online disinformation, media verification, and trend detection and forecasting using social media signals. I have been coordinating and leading a number of collaborative research and innovation projects. I have co-authored more than 200 publications, have served as TPC member in more than 50 conferences and I am a regular reviewer in more than 20 journals. Since 2014, I am one of the co-founders of the Infalia Private Company, a spin-off company of CERTH.