Job Description

TCS is Hiring for Arista L3 Network Engineer

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Exp:- 8to 12yr.

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Location:- Chennai

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JD

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

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

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

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Job Requirements*

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- Design, deploy, and support Arista EOS-based data center networks
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- Configure and manage Leaf-Spine architecture with EVPN-VXLAN overlays
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- Robust experience with BGP (underlay/overlay), OSPF, and route redistribution
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- Implement and manage VXLAN, VTEPs, VRFs, and multi-tenant segmentation
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- Configure and troubleshoot MLAG, LACP, VLANs, and Layer 2/3 forwarding
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- Work on high-availability and redundancy mechanisms in DC networks
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- Perform traffic analysis, packet capture, and latency troubleshooting
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- Integrate Arista solutions with firewalls, load balancers, and WAN/SD-WAN
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- Use Arista CloudVision (CVP)



for centralized management, telemetry, and automation
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- Support automation initiatives using Python, Ansible, or REST APIs
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- Troubleshoot routing loops, convergence issues, packet loss, and asymmetric routing
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Key Responsibilities*

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