1995-2001 Conducting research, testing and implementation of new telecommunication technologies or new features of already used technology2001-2007 Monitoring and predicting capacity availability of both devices and trunks, as well as performing necessary actions such as device purchase, re-engineering of devices, re-engineering trunk etc. 2007-2014 Communicate and negotiate contracts with owners of telecommunication support facilities (eg building owners, area managers etc.).Conducting procurement process of goods and services (choosing partners, negotiation etc)2014-2016 Responsible in the development of telecommunication infrastructure such as room and telecommunication equipment in it, trunk fiber optic, telecommunication tower etc.