• Support for 4 offices working 24/7
• Management of team of 10 persons working on shifts
• Implementation of ticket (OsTicket) and monitoring (Zabbix), Backup (Veeam) systems
• Network optimization (L2 switches and VLAN's), migration from Fortigate devices to Pfsense with backup ISP's and OSPF implementation
• VPNs implementation between offices and cloud networks, VPN for remote users
• Implementation and supprot of NVR (Dahua, Hikvision) and Security (ZKTeco) systems
• Office 365 management.
  
• Support & refresh of company IT infrastructure
  

• Infrastructure deployment in Data Center
• Office equipment upgrade and Active directory configuration
• Virtualization and Migration of business critical services to Data Center
• Implementation of iTop ITSM & CMDB system
• IP - telephony implementation
• Backup and Antivirus systems implementation and automation
• Processes and documentation adaptation and implementation
• E-mail service migration to MS Exchange.
• Implementation with developers support of new insurance accounting system.
• Support & refresh of company IT infrastructure

• Support & improvement company IT infrastructure (3 offices - Denmark, Great Britain, Ukraine)
• 50 servers (Hyper-V virtual machines, 6 real servers), 70 workstations including laptops, LAN, Wi-Fi, VPN, Active Directory, Group Policies, Backup.
• Installation, configuration, update and support of different services.
• Migration of IT equipment of DK office to a new location.
• New technologies implementation: MS System center (SCCM, SCVMM) , WDS, 2-factor VPN authentication (Juniper SA-700 + SMSPASSCODE), MS CRM, Navision, Migration to Office 365, migration from TFS 2010 to 2015
• Procedures and processes according to ISO 27001

End user support (helpdesk).

• IT Support for office with 130+ employees working 24/7

• Team leader for 3 system administrators working on shifts.

• Procedures, manuals development, implementation & supervision.

• Conduct interview with candidates on IT system administrator position.

• Trainings development & processing.

• Support of uninterruptable IT equipment functionality.

• Network services, server & workstations troubleshooting & fixing.

• 3 offices merged to one in a new location.

• Workstations - 80% Linux (Ubuntu) - developed & implemented installation & configuration process using shell scripts. Set up of LDAP user authentication, updates using apt-proxy (updates cache server), remote user profiles support (nfs server based), ocs inventory agent, user interface configuration. For Windows - scripts for automatic updates using WSUS, osc inventory agent, samba shares.

• Servers - FreeBSD servers with PF, DHCP, LDAP, DNS, NTP, SAMBA, NFS, SQUID (with load balancing for 2 ISP's), Asterisk, Cacti with own developed graphics for remote connections health (ping timeouts & losses), OpenVPN server. Script - based procedures for ISP's switching in case of link failure. Ocs inventory & apt-cache servers. Separate Windows server (WSUS, Remote desktop).

• VLANs based network built with 10 24x ports managed switches + 1 12x ports core switch. Network was planned, equipment purchase procedure was calculated approved & proceed, switches (Cisco) were configured by me before move in to office. Network build was supervised.

• Workstations & Servers software installation & maintenance, support for Office PABX, Access control & alarm monitoring system. Office equipment purchasing, installation and service support. Customer support & helpdesk.
• Linux - based server with DHCP, VPN, FTP, SAMBA , MRTG services installed, Office file and print server, Cisco switch & internet routers are replaced (in order with tech-refresh program), ISP connection enhanced, Equipment moved to a new office area.

Motorola phones software preparation & partial localization for Ukrainian market.

• Workstations software installation & maintenance, Customer support
• System Management Server 2003 implemented as corporate standard.

Unattended software installation packs creation.

• Workstations software and hardware installation & maintenance, Customer support.

• Communication links (leased lines) with subdivisions installation.

• Servers Administration (Mail, Internet, SAMBA...).