Arista L3 Network Engineer

Tata Consultancy Services; Tamil Nadu; On-site; INR 1,800,000 - 3,600,000; Full time

Job summary

Tata Consultancy Services (TCS) in Chennai is hiring an Arista L3 Network Engineer with 8–12 years of experience to design, deploy, and support Arista EOS-based data center networks. You will manage Leaf-Spine with EVPN-VXLAN, BGP/OSPF, VXLAN, VRFs, and MLAG, ensuring high availability and performance across DC fabrics.

The role involves traffic analysis, packet capture, latency troubleshooting, and integration with security, cloud, and WAN/SD-WAN solutions.

Qualifications

• Design, deploy, and support Arista EOS-based data center networks.
• Configure and manage Leaf-Spine architecture with EVPN-VXLAN overlays.
• Strong experience with BGP (underlay/overlay), OSPF, and route redistribution.
• Implement and manage VXLAN, VTEPs, VRFs, and multi-tenant segmentation.
• Configure and troubleshoot MLAG, LACP, VLANs, and Layer 2/3 forwarding.
• Work on high-availability and redundancy mechanisms in DC networks.
• Perform traffic analysis, packet capture, and latency troubleshooting.
• Integrate Arista solutions with firewalls, load balancers, and WAN/SD-WAN.
• Use Arista CloudVision (CVP) for centralized management, telemetry, and automation.
• Support automation initiatives using Python, Ansible, or REST APIs.
• Troubleshoot routing loops, convergence issues, packet loss, and asymmetric routing.

Responsibilities

• L2/L3 escalation point for Data Center and network incidents.
• End-to-end support for DC network fabric (underlay & overlay).
• Participate in LCM activities, upgrades, and change implementation.
• Perform Root Cause Analysis (RCA) and drive permanent fixes.
• Collaborate with cross-functional teams (security, application, cloud).
• Ensure high availability, performance optimization, and design compliance.
• Maintain documentation, network diagrams, and SOPs.

Skills

Arista EOS

Leaf-Spine

EVPN-VXLAN

BGP

OSPF

VXLAN

VTEPs

VRFs

MLAG

Python

Ansible

REST APIs

Arista CloudVision

Tools

Arista EOS

Arista CloudVision CVP

Python

Ansible

REST APIs

Job description

TCS is Hiring for Arista L3 Network Engineer

Exp:- 8to 12yr.

Location:- Chennai

JD

Arista Switching (EOS, EVPN-VXLAN, Leaf-Spine, MLAG)

Routing & L3 Technologies (BGP, OSPF, VRF, Route Redistribution)

Data Center Architecture & Fabric Design (CLOS, Spine-Leaf)

Job Requirements*

• Design, deploy, and support Arista EOS-based data center networks
• Configure and manage Leaf-Spine architecture with EVPN-VXLAN overlays
• Strong experience with BGP (underlay/overlay), OSPF, and route redistribution
• Implement and manage VXLAN, VTEPs, VRFs, and multi-tenant segmentation
• Configure and troubleshoot MLAG, LACP, VLANs, and Layer 2/3 forwarding
• Work on high-availability and redundancy mechanisms in DC networks
• Perform traffic analysis, packet capture, and latency troubleshooting
• Integrate Arista solutions with firewalls, load balancers, and WAN/SD-WAN
• Use Arista CloudVision (CVP) for centralized management, telemetry, and automation
• Support automation initiatives using Python, Ansible, or REST APIs
• Troubleshoot routing loops, convergence issues, packet loss, and asymmetric routing

Key Responsibilities*

• Act as L2/L3 escalation point for Data Center and network-related incidents
• Provide end-to-end support for DC network fabric (underlay & overlay)
• Participate in LCM activities, upgrades, and change implementation
• Perform Root Cause Analysis (RCA) and drive permanent fixes
• Collaborate with cross-functional teams (security, application, cloud teams)
• Ensure high availability, performance optimization, and design compliance
• Maintain documentation, network diagrams, and SOPs