Network Administrator

Tata Consultancy Services; Gurugram District, Chennai District; On-site; INR 900,000 - 1,500,000; Full time

Job summary

Tata Consultancy Services is seeking an experienced Network Admin in India to manage complex Cisco networking environments. The role requires expertise in routing, VLANs, and data center switching, including VXLAN, FEX, and Nexus 9k platforms.

The candidate will troubleshoot and optimize network paths, engage in 24x7 support, and coordinate with global teams to ensure reliable connectivity and performance across DCs.

Qualifications

• 8–13 years of experience in network administration and troubleshooting.
• Proven experience with Cisco routers and Nexus/ core switches.
• Strong understanding of VXLAN, FEX, and vPC technologies.
• Hands-on with BGP/EIGRP routing protocols and route redistribution.
• Experience with GRE/IPSec VPNs and NAT configurations.

Skills

Routing

Cisco Routers

Nexus Switches

VXLAN

FEX

vPC

BGP

EIGRP

NAT

ACLs

Job description

Job Position : Network Admin

Exp-Range-8-13Years

Required Tech stack :Network Admin, Cisco, LAN,WAN, Routing ,Cisco ASR, Cisco nexus, VXLAN , Datacenter

Interview Date :19-Aug-26

Interview mode :Virtual

Venue : Chennai/Gurgaon

Must Have :

• Configuration and troubleshooting knowledge on Routing,
• Configuration and troubleshooting experience in Cisco network devices (Routers, Nexus switches & Core Layer 3 catalyst switches)
• Good Knowledge & troubleshooting experience in Cisco ASR & ISR routers
• Good Knowledge & troubleshooting experience in Cisco Nexus 9k switches.
• Configuration & troubleshooting knowledge in Fabric Extender Technology (FEX), virtual Port Channel (vPC), and Virtual Extensible LAN (VXLAN)
• Good Knowledge in DC Routing & Switching infrastructure
• Configuration & troubleshooting knowledge in BGP routing protocol (ASN, PBR, Route-reflectors, community, Tags & Attributes)
• Configuration & troubleshooting knowledge in EIGRP routing protocol (load balancing, topology & Metrics)
• redistribution of routes between different routing protocols
• Good Knowledge in GRE VPN
• Good knowledge in IPSEC VPN (IKE V2)
• Good Knowledge in NAT configuration
• Good knowledge in Route-mapsACL & Prefix list
• Good Understanding of TCP/IP, Routing protocols,
• .Good remote troubleshooting skills
• Excellent analytical and organizational skills and the ability to work with multiple geographically dispersed teams
• Excellent listening skills & ability to communicate clearly and fluently in English
• Flexibility to work in shifts for 24x7 supports
• Strong team player with a constructive perspective and commitment to the success of the business
• .Ability to work on multiple concurrent tasks with conflicting priorities