I. Maintenance of the corporate network services. 1) maintenance of the corporate network infrastructure in the Root Data Centers - maintaining the network infrastructure of virtualization systems - development, launch of new and optimization of existing logical and physical elements of the network infrastructure in Data Centers - management and resource distribution of the infrastructure network data transmission channels in Data Centers 2) maintenance of the corporate network infrastructure in Regional Data Centers (Communication Nodes) and Offices - development, launch of new and optimization of existing logical and physical elements of the network infrastructure in Data Centers and Offices - management and resource distribution of the infrastructure data transmission channels in Data Centers and Offices 3) ensuring network security standards - deployment and maintenance of services for remote access of users to a corporate network based on Cisco ASA with support for domain authorization, Active Directory group policies and security certificates - development, deployment of new and editing of existing rules for access control of the corporate network infrastructure - implementation and administration network equipment centralized management service, automatic backup and restoring configurations services 4) deployment and administration of a centralized wireless network with 802.1x authorization (based on equipment from different vendors + MS RADIUS/NPS) - carrying out a number of pilot WLAN deployment projects based on several different vendors network equipment (Eltex, Qtech, Ruckus, Ruijie, Cisco) to select the optimal solution - preparation and approval of the WLAN deployment project based on the results of the tests - implementation of the chosen Solution in accordance with the approved technical project (equipment setup, launch and maintenance of the WLAN) 5) Work with equipment: Cisco Catalyst 3560, Cat 3750, Cat 6506, Cat 6509 Cisco C29xx, C38xx, C39xx, C7201, C7206 Cisco ASA 5520, ASA 5550, FP 1040 Cisco ASR 1001, ASR 1002, ASR 1006, ASR 1001x Cisco Aironet 2802, Catalyst 9120AXE, Cisco C9800-CL Juniper MX-204 Juniper SRX-100, SRX-240 Juniper EX-4200, EX-4300, EX-4550 Juniper QFX-5100, QFX-5110, QFX-5120 Eltex MES-21xx, MES-23xx, MES-31xx, MES-33xx, MES-53xx Eltex-AP WEP-12ac Work with hypervisors (VMWare, Hyper-V), domain services, support of MS Windows in network services terms. Participation in the organization and support of network and related services based on CentOS / Ubuntu (OpenVPN, cBackup, backup FTP/SCP, consultations of related departments, etc.) II. Development of monitoring, control and preventive failure notification of a scheme in the operation of HA services - technical project for the implementation of the logic of notification of problems on the network - logical optimization of the network services interaction according to the requirements of fault tolerance of HA services - development of documentation for technical engineer, support and employees at the facilities to take action in case of emergency situations III. Implementation and maintenance of monitoring systems - monitoring network map nodes based on Observium CE service - network traffic monitoring based on the NetFlow Analyzer service - monitoring of network nodes and server systems based on the Zabbix service - participation in the implementation of monitoring for other services carried out through network data transmission channels IV. Development and maintenance of documentation on the architecture of the network, network and related services (using MS Visio, Atlassian Confluence, Netbox etc.).

I. Development, design, configuration and maintenance of the enterpise network services. 1) maintenance of the enterpise network infrastructure in the Data Center - maintaining the network infrastructure of virtualization systems - development, launch of new and optimization of existing logical and physical elements of the network infrastructure in the Data Center - management and distribution resources of infrastructure network data transmission channels in the Data Center 2) construction and administration of the centralized heterogeneous geographically distributed and logically segmented failover corporate data network 3) ensuring network security standards - deployment and maintenance of services for remote user access to a corporate network based on OpenVPN (based on RousterOS x86 and CentOS) with support for domain authorization, Active Directory group policies and security certificates - development, deployment of new and editing of existing rules for access control of the corporate network infrastructure - implementation and administration network equipment centralized management service, automatic backup and restoring configurations services 3) deployment and administration of a centralized wireless network with 802.1x authorization (based on Cisco and Mikrotik equipment + MS RADIUS/NPS) 4) work with the following list of network equipment: Cisco Catalyst 2960, Cisco Catalyst 3750, Cisco C8xx, Cisco 28xx, Cisco 29xx, Cisco Aironet 1142/2602/2702, Cisco vWLC Juniper Networks MX-5, SRX-220, SRX-240, EX-2200, EX-3200, EX-4200, EX-4550, vSRX Mikrotik RB2011, RB1100AH, CCR-1016, Groove/Metal 52, RouterOS x86 (virtual), СHR x64 HP 1910, 2910, 2530, 6125G/XG IBM Blade System network quipment HP Blade System network quipment Work with hypervisors (VMWare), domain services, maintenance of MS Windows in terms of network services. II. Development of monitoring, control and preventive failure notification of a scheme in the operation of HA services - implementation of managed UPS with notification of power problems technical project - logical optimization of the network services interaction according to the requirements of fault tolerance of HA services - development of documentation for technical engineer, support and employees at the facilities to take action in case of emergency situations III. Implementation and maintenance of monitoring systems - monitoring network map nodes based on The Dude service - network traffic monitoring based on the NetFlow Analyzer service - monitoring of network nodes and server systems based on the Zabbix service - participation in the implementation of monitoring for other services carried out through network data transmission channels IV. Development and maintenance of documentation on the architecture of the network, network and related services (using MS Visio, Atlassian Confluence, Netbox etc.).

I. Development, design, configuration and maintenance of the company’s network services. 1) construction and administration of the centralized heterogeneous geographically distributed and logically segmented failover corporate data network - remote networks routing plan development and optimization of existing dynamic routing plan (OSPF) on the edge routers / firewalls and core switches - establishment of encrypted secure duplicated VPN tunnels between remote offices / outlets (Juniper SRX-100) and a VPN hub in the Data Exchange Center (Juniper SRX-240) - development, construction, testing and commissioning of an alternative infrastructure solution for building a secure corporate geographically distributed network between remote offices / outlets (Mikrotik RB-2011, Mikrotik CRS-125, Mikrotik CRS-326) and VPN concentrators (Mikrotik Cloud Core 1016) in the Data Exchange Center - development and implementation of network equipment centralized management services (on Debian 7.x) 2) providing of network security standards - typical security settings for access layer switches (Cisco Catalyst 2960) (ACL, port-security, arp-inspection, dhcp snooping, bpdu filtering, ssh + crt + AD policies.) - delineation of access by network segments using of network device tools (security policies, proprietary services of network device OS) - implementation of 802.1x protocol and network access restriction based on Active Directory policies - development and implementation of a service for remote access of users to the corporate network based on the OpenVPN server (on Debian 7.x) with support of domain authentication (by RADIUS), Active Directory group policies and security certificates 3) ensuring failover mode of critical network nodes and network services - clustering of boundary firewalls (Juniper SRX-220 and SRX-240) and core switches (Juniper EX-4200) (virtual chasis) - providing the necessary network redundancy between Core and Distribution levels (STP, LACP agregated ethernet on JunOS and port-channel on IOS) - setting up High Avaliblity mode for automatic switching to backup communication channels - configuration and providing of emergency remote access to the node equipment through management ports and backup communication channels - development and implementation of the network equipment centralized management services, automatic configurations backup and recovery system (on CentOS 6.x) 4) construction and administration of centralized (based on Cisco WLC 2504 controller and Cisco AiroNet 2602/2702 access points) wireless networks with RADIUS authorization support 5) launching of new office and remote office network segments and their integration with network services of company - setting up a plan for scaling the network - selection of equipment and budgeting - drawing up of working estimates of the project - control of installation works - setup (from scratch and reconfiguration available for new tasks) and launch of network equipment - launching company's services in new segments and optimizing their operation at the network level Work with the equipment (basic setting "from scratch" new and administering existing ones): Cisco Catalyst 290x, Cisco C8хx, Cisco 291х, Cisco ASA 55xx, Cisco WLC-2504, Cisco Aironet 2602/2702 Juniper Networks SRX-100, SRX-2xx, EX-4200, Mikrotik RB 9xx, RB20xx, CRS-125, CRS-326, CCR-1016, ROS x86 (virtual), Dell 28xx, 62xx 3Com 3CRDSF9PWR HP 1910, 2910 Ubiquiti UAP, UAP-AC, UAP-PRO, USG, EdgeSwitch (console and software mode) Work with hypervisors (VMWare), domain services, MS Windows support in the network services pattern. II. Designing scheme of the organization of work and administration of voice services - technical project for the implementation of virtual cloud PBX (Elastix) - numbering plan and dial plan - providing failover mode of VoIP services (from services and external providers) - Administration of cloud PBX (on Elastix/Debian) - administration of office PBX (on common Asterisk/Ubuntu) III. Management of the network services monitoring system implementation (Zabbix, Netflow Analyzer) - the status of the network nodes of the office, the cloud node in the Data Exchange Center, the end equipment of remote offices / outlets and their communication channels - the state of voice services and their communication channels - participation in the monitoring implementation processes for the rest of the services through the network data channels IV. Development and maintenance of documentation of the network architecture, network and related services (using MS Visio software, etc.).

Monitoring and maintaining the efficiency of data channels of the trade network from 600 points scattered throughout the country. Processing user requests in the ServiceDesk system. Selection, purchase, adjustment, repair of network equipment, PC and office equipment. Interaction with providers, suppliers of equipment and services (in the IT part). Maintenance of the server rack of the central office in the part of telecommunications equipment (servers, managed switches, central router, e.t.c.), mini PBX. Preparation of workplaces, carrying out of preventive works on maintenance and improvement of working capacity of LAN of the office.

Engineer of structured cabling systems. Designing, control of installation works, preparation and commissioning of structured cable networks.

Monitoring the operation of active network equipment, supporting users by phone, maintaining internal documentation, remotely administering organizations, repairing computers, minor laptop repairs. Acted as the head of the installation department and the subscription service in combination.

Monitoring the operation of active network equipment, consulting users by phone, maintaining internal documentation.