- Automation of software installation (writing roles and playbooks for ansible). - Maintaning the operation of servers 24/7. - Searching and solving of problems associated with the operation of the system. - Setting up monitoring. - Security. - Planing and configuring a fault-tolerant architecture. - Setting up Web Proxy servers. - Setting up and updating Linux and Windows servers. - Selection of software and hardware for solving problems related to the construction of information infrastructure. - Writing scripts in Python. - Administration of Linux, Windows Server, DNS, ProxMox, OpenVPN, NGINX, MySQL, Postgres, ELK, Firewall, Switches, Routers, Redis, Zabbix, Grafana, Jenkins, Ansible, Zimbra.

Writing and editing ansible playbooks and roles.

- Maintaning the operation of servers 24/7. - Searching and solving of problems associated with the operation of the system. - Setting up monitoring. - Security. - Planing and configuring a fault-tolerant architecture. - Setting up Web Proxy servers. - Setting up and updating Linux and Windows servers. - Selection of software and hardware for solving problems related to the construction of information infrastructure. - Writing scripts in Python. - Administration of Linux, Windows Server, DNS, ProxMox, OpenVPN, NGINX, MySQL, Firewall, Switchs, Routers, Redis, Zabbix, Grafana, Jenkins, Ansible, Zimbra.

• Maintaining: - Hardware equipment: 4 Servers (Huawei 1288H V5), SAN (OceanStor 2200 V3) - Virtualization platforms based on oVirt(RHEV) and Proxmox - 100 VMs based on CentOS and Debian. - Web cluster composed of Nginx, PHP-FPM, HAProxy, Keepalived, MySQL, MongoDB, hasher - Mail server based on Zimbra - Authentication server (FreeIPA) - Open Source Security Information Management - Monitoring and configure Zabbix server - Backup systems (vProtect) - Management systems based on SaltStack • Configure services according PCI DSS • Troubleshooting

• Maintaining Cloud Virtualization systems based on OpenStack, KVM and CEPH storage for customers. • Prepare images for cloud • Support and configure customers servers and virtual routers • Maintaining IP Camera Software solution • Support VMware vSphere 5.0 • Hardware equipment Cisco USC B and C Maintaining OpenStack platform on RedHat system series Servers and Cisco 6248 Fabric Interconnect.

Planning and optimization of information systems. Maintain the system administration of server platforms and application servers. DNS and DHCP administration on an industrial scale and configuration automation. Preparation, installation and administration of the following equipment: HP (servers, SAN data storage system), DELL (servers, DAS data storage system), Fujitsu (servers, SAN data storage system), SuperMicro. Configuration of system resources, operating systems and hardware (configuration of switches, installation and configuration of Linux RHEL 5/6/7, CentOS 5/6/7, Ubuntu, virtual media: KVM, VMWare ESXi, configuration of software: apache, Nginx, freeradius, keepalived, sshd, Oracle, PostgreSQL, MySQL, etc.). Nagios, centreon, cacti, mrtg monitoring systems support. Preparation of design and operational documentation. Systems upgrades. System backup and recovery (Oracle and PostgreSQL DBMS, applications, disk subsystem images, HP Data Protector). Management contractors in project planning and subsequent implementation. Identification and elimination of hardware and system failures. Solution of incidents and problems arising during the operation of information systems. Operating IT system security assurance. Participation in server hardware inventory. Planning, optimization and modernization of resources needed to operate the existing infrastructure. Participation in planning and implementation of the working projects for new information systems. Control over the state of server hardware. Reporting on the state of hardware and software complex of the Company's IT systems. Installation and maintenance of: server hardware, special software. System administration of Unix platforms in a large enterprise scale. Excellent knowledge of TCP/IP network protocols, large work with the interpreted programming languages (bash, perl, awk). Experience with relational database servers, query writing, optimization (Oracle, mysql, MSSQL). Personal achievements: Transfer of servers to a virtual environment that allowed reducing the expenses for hardware resources. I developed and implemented a DHCP configuration system, through which the process of work between the IT department and data transmission subdivisions was sped up. Data transmission departments entered the required information independently in their regions. The system makes error-free configuration files; the roles/rights distribution policy was also provided for. I designed Operation Support Systems used in the Company. Hundreds of hardware and virtual servers with applications were under administration.

Installation and support of servers running on operating systems of Windows Server line, Unix systems (Solaris, etc.), Linux (RedHat Enterprise Linux, CentOS, openSUSE, etc.). Preparation, installation and administration of SUN Microsystems equipment (servers, DAS data storage system). Configuration of routers and switches (Cisco, Linksys, D-Link). Development and implementation of data transmission and monitoring projects (by configuring the active hardware and software).

Established tax software, setting up networks and the maintenance and repair of computers

The official duties included: control over the operation of servers on Windows 2003, maintenance of client workstations, installation and configuration of software, purchase and assembly of computers, diagnosis and replacement of inoperable modules, configuration of DHCP, DNS, File Server, Active Directory, configuration and maintenance of Kerio FireWall 6.3, Kerio Mail Server 3.1.

Administration of domain controller (Win2003), file server, proxy server (ISA 2004), Exchange 2003. Occasional visits to the Company's customers.

Administration of internal server (Exchange 2003, AD, UserGate, IIS, Sharepoint Portal Server). Visits to customers for troubleshooting.

Administration of workstations in computer classrooms of the Institute, installation and configuration of server and client software supplied by the main branch and the central institution.