Yorgos is an engineer with a PhD in the humanities, a policy wonk and a technology entrepreneur. A computer engineering graduate of the National Technical University of Athens, he did a Master's on educational technology at Harvard and received his PhD from Stanford, on the history of recent technology.

In 2009, he and Dimosthenis Kaponis created GEO|ADS, an innovative platform for location-based interactive mobile advertising. And AthensBook, a very popular smart city guide for mobile devices. AthensBook is an always-on, personalized, instantly accessible layer of dynamic information for the city of Athens, Greece. Taking advantage of technologies like GPS and 3G data networks and combining algorithmic methods, public data mash-ups and user generated content, AthensBook has evolved into an extensible and readily exportable platform. A version for Thessaloniki is already on offer, with apps for other European cities in the works.