• Active Directory administration (more than 19,000 users, 8 sites)• Microsoft Exchange 2016 administration (14 servers) • Microsoft Skype 4 Business administration • Microsoft infrastructure services administration: DNS, DHCP, PKI, ADFS, Azure AD connect, WSUS • Microsoft SCOM administration• Linux-based services administration: Postfix, Squid • Microsoft 365 services administration: Teams, Exchange Online, Onedrive, Sharepoint • Cross-forest migration of Active Directory and Exchange (more than 40 branches throughout Russia and 1500+ accounts) • Automation of Microsoft infrastructure management processes using Powershell

• Organization and administration of server infrastructure based on Windows Server 2012 R2, 2016 • Virtualization of server infrastructure based on Hyper-V • Implementation of a migration project from an existing forest to a new one: migration of Active Directory objects, Exchange mailboxes, Lync accounts (more than 700 accounts) • Implementation of the project for building a failover cluster based on Windows Server 2016 • Deployment of infrastructure and administration of the mail system based on Microsoft Exchange Server 2016 • Deployment of infrastructure and administration of Microsoft Skype 4 Business • Automation of IT infrastructure management processes using Powershell • Administration of storage Huawei Dorado, Qnap • Implementation of data backup based on Veeam • Organization a failover platform and administration 1C: Enterprise 8.3 business platform + MSSQL infrastructure • Bitrix24. Development of a help-desk system for the IT department (creation of a business process, lists). Automation of business processes for tender procedures

• Organization and administration of server infrastructure based on Windows Server 2008, 2012, 2016 (more than 60 servers) • Server infrastructure virtualization based on Hyper-V • Building a failover cluster based on Windows Server 2012 • Implementation of a monitoring and management system for corporate IT environment Microsoft System Center: backup, monitoring, anti-virus protection, OS installation over the network, remote software installation • Organization and administration of the mail system based on Microsoft Exchange Server 2010, 2013, Online • Implementation and administration of the corporate communications system Microsoft Lync Server 2010, 2013 • Lync and Exchange migration to the Office365• Automation of IT infrastructure management processes using Powershell • Organization of networks based on Cisco equipment in several branches with redundant communication channels. Construction of interconnected networks based on DMVPN technology (5 branches) • Organization and administration of 1C MSSQL infrastructure (several servers) • Configuration and support of other accounting programs, client banks • Service of PBX and office equipment

• Administration of a network and servers based on Windows 2003 Server, Windows 2008 Server • Implementation of the MDaemon mail server• Development and implementation of a corporate network security policy: installation and configuration of a firewall, anti-virus and antispam protection (Kaspersky) • Configuration and support of accounting programs, client banks • Service PBX and office equipment

• Administration of a network and servers based on Windows 2003 Server • Development and implementation of a corporate network security policy: installation and configuration of a proxy server, firewall, installation and configuration of a mail server, anti-virus protection, installation and configuration of access control to removable media and devices in the system • Administration of the video surveillance system • Setting up and support of accounting programs, client banks • Maintenance of PBX and office equipment

Software development: completion of development and implementation of the project "Payment acceptance system for agents". The essence of the project: acceptance of payments by bank agents (organizations with which an agreement on acceptance of payments has been concluded) from various points of the city and the republic via the Internet. The project is implemented using VB .NET, MSSQL, MySQL.

• Administration of a network and servers based on Windows 2000 Server: GPO, Active Directory, WEB / proxy server (Microsoft IIS, Microsoft ISA Server, SurfControl)• Administration of the Citrix terminal servers• Creation of internal and support of external websites of the enterprise• Consolidation of branches over VPN channels using ADSL technology• Work in 1C:Enterprise 7.7 platform (programming, configuration)