Learn more about the people behind Geoinformatics.



Stefanos Hatzichristos


Stefanos Hatzichristos is a graduate of the Department of Electrical Engineering, Technological Institute (TEI) of Larissa, in 1999. He holds a Master of Science degree from the University of Bradford, Great Britain, entitled "Real-time Communications and Electronic Systems". From 2004 to 2014, he was a Laboratory Associate, at the Department of Electrical Engineering, TEI of Larissa. The last years he is dealing with Locationing Technologies.


Thomas Hatzichristos

Chief Science Officer

Thomas Hatzichristos has a MSc degree in Surveying Engineering and a PhD in GIS and Computational Intelligence, at the National Technical University of Athens (NTUA). He was a Lecturer (on fixed-term contract), at the Department of Geography, University of the Aegean, Mytilini, Greece, from 1998 to 2000. From September 2000 he belongs to the Specialized Teaching Staff of NTUA, Greece. He has more than 60 publications. He is a consultant in several public authorities and private firms and the President of the Greek Community for Geographic Information (HellasGI).

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Sales Executives




Stelios Tsantes

Data Manager

Stelios Tsantes is a Surveying Engineer, by the Technological Educational Institute of Athens, since 1984. He was the Manager of the Dept. of Scanning and Digitizing, of the company "Eratosthenes" from 1992 to 2016. He has participated in various projects with data of small and large scales, for Remote Sensing and Cadastre Projects, Geoportals, Mapping and Indoor Plans for Facilities.



Ioanna Velmachou

Customer Support Manager

Ioanna Velmachou has a MSc Degree in Remote Sensing. The last years she is dealing with monitoring, escalating interactions and co-ordinating between different technical teams, to ensure resolution within agreed SLAs, throughout the life-cycle of the project. She provide support and QCS application expertise to any member of the company Team.