Job Description
TCS is Hiring for Arista L3 Network Engineer
nExp:- 8to 12yr.
nLocation:- Chennai
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nJD
nArista Switching (EOS, EVPN-VXLAN, Leaf-Spine, MLAG)
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nRouting & L3 Technologies (BGP, OSPF, VRF, Route Redistribution)
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nData Center Architecture & Fabric Design (CLOS, Spine-Leaf)
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nJob Requirements*
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- Design, deploy, and support Arista EOS-based data center networks n
- Configure and manage Leaf-Spine architecture with EVPN-VXLAN overlays n
- Solid experience with BGP (underlay/overlay), OSPF, and route redistribution n
- Implement and manage VXLAN, VTEPs, VRFs, and multi-tenant segmentation n
- Configure and troubleshoot MLAG, LACP, VLANs, and Layer 2/3 forwarding n
- Work on high-availability and redundancy mechanisms in DC networksn
- Perform traffic analysis, packet capture, and latency troubleshooting n
- Integrate Arista solutions with firewalls, load balancers, and WAN/SD-WAN n
- Use Arista CloudVision (CVP)



for centralized management, telemetry, and automationn
- Support automation initiatives using Python, Ansible, or REST APIsn
- Troubleshoot routing loops, convergence issues, packet loss, and asymmetric routing n

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

📌 AristaNetwork Engineer (Tamil Nadu)
🏢 Tata Consultancy Services
📍 Tamil Nadu