Greetings from TCS!!!

**TCS is Hiring for Network Engineer(L3)**

Desired Experience: 6- 8 years

Job Location: Chennai

Job Description:

Administer and support enterprise LAN/WAN network infrastructure.

Configure and manage firewalls including security policies, NAT, and access control rules.

Implement and troubleshoot routing protocols such as BGP, OSPF, and static routing.

Manage Layer 2 and Layer 3 switching including VLANs, trunking, STP, port-channels, and vPC.

Support Cisco ACI fabric using APIC for configuration and monitoring.

Configure and manage EPGs, contracts, policies, VLAN pools, and physical domains in ACI.

Implement and support L3Out connectivity to external networks and firewalls.

Monitor and troubleshoot network performance, latency, and availability.

Execute network changes, upgrades, and migrations as per approved change processes.

Provide L2/L3 support, incident resolution, RCA, and problem management.

Participate in DR drills, audits, and security reviews.

Coordinate with security, compute, storage, and vendor teams.

Required Skills

Firewall administration (policy, NAT, security zones)

Routing protocols: BGP, OSPF, static routing

Switching: VLANs, STP, trunking, port-channels, vPC

Cisco ACI (APIC, EPGs, contracts, L3Out)

Datacenter networking concepts

Network troubleshooting and performance analysis

ITIL processes (Incident, Change, Problem)

Preferred Skills

Experience with Cisco ASA, Firepower, Palo Alto, or Check Point firewalls

Load balancer integration (F5 or equivalent)

Network migration and transition projects

CCNA / CCNP / Cisco ACI certification

Network documentation and diagram creation

Network Administrator