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IBS
Russia1 month ago
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Grade
Senior
Work Format
Remote
Employment
Full-time
English Level
B1 - Intermediate
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About the company IBS is one of the largest Russian IT companies with a 30-year history. We create innovative solutions for market leaders, bring together over 4000 professionals, and operate throughout the country. Join us and become part of the future of Russian IT!
Responsibilities:
Ensuring the stable, secure, and continuous operation of the company's network infrastructure, maintaining critical corporate services, and participating in the development of IT infrastructure. • Administration of the Company's geographically distributed network infrastructure based on Cisco equipment o Management of the external perimeter (FW/NAT/VPN/IPSEC). o Wi-Fi + Radius management. o Management of the internal perimeter FW/Routing. o NAC management. o Maintenance of access/core routers and switches. o Software updates. • Interaction with contractors for reconfiguration and maintenance of communication channels. • Monitoring the availability of network infrastructure nodes using Zabbix/Cacti. Analysis of alerts, control of network equipment, channels, and services availability and performance, working with event logs. • Resolution and diagnosis of emerging problems. L3 incident management. Diagnostics, fault localization, service recovery. • Maintaining technical documentation for serviced systems, writing instructions. • Participation in IT infrastructure development projects. Modernization and development of IT infrastructure, connection of new systems, migrations, reduction of operational risks. • Administration and maintenance of servers for the Telecommunication Systems Department based on Windows and Linux OS.
Requirements:
• Knowledge of network technologies and routing protocols at the Cisco CCNP level. • Experience with Cisco equipment. Ability to configure switches, switch stacks, and routers. (Catalyst 36xx, 37XX, 38XX, 9XXX; ISR 4XXX; Catalyst 68xx). • In-depth knowledge and experience with network protocols and technologies: STP/MSTP, VLAN, LACP, AAA, Syslog, Span, ACL, VRF, OSPF, VSS, NetFlow, MLAG, HSRP, VRRP, etc. • In-depth knowledge and experience with firewalls based on Cisco and other vendor equipment. Experience with fault-tolerant systems based on Cisco ASA, FTD, Firepower. • Experience in administration and building VPN networks (Cisco AC, Site to Site VPN based on IPsec, l2tp). • In-depth knowledge of wireless network technologies, experience in configuring and operating enterprise-level wireless controllers (from 150 AP). Experience with Cisco WLC (5508), Cisco Prime. Knowledge of 802.1x, Radius (Cisco ISE) technologies. • Experience with and understanding of monitoring systems (Cacti/Zabbix and others). • Advanced user knowledge of Linux OS, ability to deploy a server without GUI from scratch and configure it for application software to work with network equipment. • Understanding of the principles of operation of proxy servers based on Squid, Usergate, and similar. • Basic knowledge of virtualization fundamentals (VMware). • Understanding of Active Directory fundamentals. • In-depth knowledge of DNS operational specifics. • Practical experience in diagnosing and restoring services after failures. • Skill in preparing technical documentation (instructions, diagrams, regulations). • Understanding of information security fundamentals (access control, updates, policy compliance). • Willingness to perform work outside of business hours. This refers to either emergency or scheduled maintenance work. Scheduled maintenance is not weekly but periodic with prior agreement on dates. • English language proficiency sufficient for understanding technical documentation, help articles, and corresponding with software and hardware vendors.
Conditions:
