- servicing more than 50 users;- Panasonic PBX administration;- servicing of the VMware 5.5 and 6.0 virtual environment (more than 10 servers);- work at the administrative level with servers Windows 2003 / 2012 / 2016 / Debian 9;- FreeBSD management of PfSense and Free4NAS systems;- administration of a corporate site based on WordPress;- maintenance and adjustment of various office equipment;- audit of the existing infrastructure of the local network, preparation of the actual scheme;- implementation of a backup plan for important components of the enterprise;- deployment of Zabbix monitoring system;- migration of all workstations from WinXP to Win10;

- servicing more than 100 users;- work with system virtualization Citrix;- administration AD, Exchange 2010-2013;- servicing virtual environment VMware 5.5 (more than 10 servers);- work at the administrative level with servers Windows 2003 / 2008r2 (DNS, DHCP, AD, PRT, SHR, TS);- administration of "thin clients" IGEL;- work with managed switches HP ProCurve (VLAN);- maintenance of various office equipment (mainly HP);- support and development a lot of MS Access databases (VBA);- backup and restore systems and data.

- servicing more than 70 users;- projecting and installation wire local network;- maintenance of various office equipment;- maintenance of main database (Pervasive);- work at the administrative level with servers NetWare 4 and Windows 2003;- servicing of web site (Joomla 1.0-1.5).