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



Eleftheria Marini

Technical Sales

Eleftheria Marini is holding a MSc Degree from the Surveying Engineering School of National Technical University of Athens (NTUA). She is also holding a Project Management certification from the National and Kapodistrian University of Athens. As a highly motivated and quality-oriented engineer, she has successfully undertaken various technical and administrative support tasks. From 2014 to 2016, she actively participated in the implementation of R&D projects focusing mainly on Geographic Information Systems (GIS). Now as a member of GEOINFORMATICS I.K.E. she is involved in technical & sales issues of Zebra's MPact technology, which deals with Location-Based Solutions & Services with the respective recognized Certificates of "Sales Enablement for MPact Platform" and "Technical Enablement for MPact Platform".


Hara Lontou

IT Manager

Hara Lontou is a MSc graduate from the Electrical and Computer Engineering Dept. of NTUA. She is also graduate of the Geoinformatics MSc program of NTUA. Additionally she holds an MBA from the Economic University of Athens. She is very experienced in GIS systems development and geospatial Databases Design. She is also Web Developer and Designer.



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.


Alexia Lougiaki

Graphics Designer

Alexia Lougiaki works as a cartoonist-illustrator and Graphic designer. She studied illustration and caricature at the private school of Ornerakis. Took seminar course for illustrating children books at EKEBI. She also studied graphic design and took painting classes. Took a one year course in comics at VAKALO college. She is working as a graphic designer from 1999. She works also as an illustrator in educational children books, from 2007.