1980-82: European Organization for Nuclear Research (C.E.R.N) (www.cern.ch)
Participation in the development of the Data Acquisition System (DAS) of a major experiment in nuclear physics (UA1, proton-antiproton collision, SPS) at C.E.R.N in Geneva. This experiment led to the discovery of W & Z quarks in 1984 for which the group leader Prof. C. Rubbia received a Nobel prize.
1982-83: University of Geneva (www.unige.ch)
Full time assistant in Computer Science at the University of Geneva.
Teaching of programming languages: Pascal, Assembler, Fortran and participation in research projects.
1984-87: Greek Parliament (Civil Servant) (www.parliament.gr)
Feasibility study and design of an Information Retrieval System (IRS), an Office Automation system, a Photo type-setting system and Printing unit for the Proceedings department and a Local Area Network for the Parliament building. Technical specifications, Call for Tenders and Benchmark execution, using the EC multi-language data base CELEX with legal documents and the s/w BASIS, for the companies Digital (in Valbonne, FR) and Wang (in Brussels).
1987-88: Technological Educational Institution of Athens (Appl. Professor) (www.teiath.gr)
Teaching courses and running labs for Pascal programming language.
1988-91: Digital Equipment Hellas S.A. (DEC)
Software engineer in Information Management and On Line Transaction Processing systems (OLTP). Specialist in Data Base Management Systems (DBMS), 4GL and CASE tools. Consultant in business solutions (Library systems, Banking systems) and project manager for major DEC accounts (Siemens, Greek Parliament, Chemical Industries of North Greece, Bank of Macedonia & Thrace and others).
1991-98: SDR Hellas S.A. (Networking Company – Technical Manager)
Design, implementation and after-sales support of WAN and LAN networks all over Greece (Greek Sugar Industry – EBZ, Greek Statistical Department – ESYE, National Technical University of Athens – NTUA, Greek Ministry of Finance – TAXIS, Schools and Port Authorities of the Greek Merchant Marine – YEN, Epirotiki Lines – ROC, Barclays Bank, Bank of Cyprus and others).
1998-10: TEI of Athens (NOC Manager) (www.noc.teiath.gr)
Project manager for the implementation of a state-of-the-art campus facilities network at the Technological Educational Institution of Athens, based on ATM technology. Technical manager of the Network Operation Centre (NOC). Design and implementation of the new backbone network of TEI based on Gigabit technology for the support of advanced Internet services (tele-conference, tele-training, VoIP etc.).
2010-17: TEI of Athens Department of Informatics (www.cs.teiath.gr)
Application Professor in the Department of Informatics, Faculty of Technological Applications. Courses and labs on Security and Networks of Master ISICG (Informatique et Sciences de l’Information et de la Communication – Graphiques) running in collaboration with the University of Limoges, France. Courses and labs on Advanced Network Technologies of Master CNT (Computing and Network Technologies) of the Department of Informatics. Labs on Networks I&II, Computer Programming in C, Numerical Analysis and Digital Design for undergraduate students. Consultant for the Network Operation Centre of TEI of Athens.
2017-today: TEI of Athens Department of Informatics (www.cs.teiath.gr)
Assistant Professor in the Department of Informatics, Faculty of Technological Applications. Courses and labs on Networks of Master ISICG (Informatique et Sciences de l’Information et de la Communication – Graphiques) running in collaboration with the University of Limoges, France. Courses & Labs on Networks, Network Security and Advanced Network Technologies for undergraduate students.