Prior to that, he was a postdoctoral researcher in the Health Information Privacy LABoratory (HIPLAB), Vanderbilt University. He received a Diploma from the University of Crete (2005) and a Ph.D. from Cardiff University (2009), both in Computer Science. Grigorios' research interests are in privacy-preserving data mining and biomedical informatics. He has investigated both theoretical and practical research aspects, including algorithmic design, optimization, and formal modeling, and explored interesting applications in healthcare and business. Grigorios is a Professional member of the ACM.