Network Engineer (Routing, Switching, ACI & Load Balancing) **Job Summary** We are looking for a skilled **Senior Associate - Networking** with robust experience in **Routing, Switching, Cisco ACI, VXLAN/EVPN, and Load Balancing technologies** . The ideal candidate should possess hands-on troubleshooting expertise, operational support experience, and the ability to manage enterprise network infrastructure in a large-scale environment. **Key Responsibilities** **Routing & Network Fundamentals** + Hands-on experience with **OSPF and BGP** routing protocols. + Strong understanding of: + Static and Dynamic Routing + Route Redistribution + Routing Tables, Metrics, and Convergence Behavior + Good knowledge of **IPv4/IPv6 addressing** , including: + Subnetting + VLSM + CIDR **High Availability Technologies** + Experience with network redundancy and failover solutions: + HSRP + VRRP **Switching** + Strong understanding of: + VLANs and 802.1Q Trunking + Spanning Tree Protocols (STP/RSTP/MST) + Layer 2 and Layer 3 Switching + EtherChannel and LACP **Cisco ACI, VXLAN & EVPN** + Hands-on experience or strong exposure to: + VXLAN Architecture + EVPN Control Plane + Cisco ACI Fabric + Spine-Leaf Architecture + APIC Controller + Knowledge of: + vPC + FabricPath (Good to Have) **Load Balancing (F5 BIG-IP / Citrix NetScaler)** + Experience with: + Local Traffic Manager (LTM) + Virtual Servers, Pools, and Nodes + SSL Offloading (Good to Have) + Understanding of:



+ Load Balancing Algorithms (Round Robin, Least Connections, Ratio-Based) + Session Persistence / Stickiness + Health Checks and Monitoring + Layer 4 and Layer 7 Load Balancing + SNAT/NAT Configuration + High Availability and Clustering (Active-Standby) **Troubleshooting & Operations** + Strong troubleshooting skills involving: + Ping, Traceroute + Routing Table Analysis + Network Incident Management + Exposure to: + Wireshark / tcpdump (Good to Have) + ServiceNow Ticketing Tool (Good to Have) **Network Platforms** + Hands-on experience with: + Cisco Catalyst Switches + Cisco Nexus Switches + Cisco IOS / NX-OS CLI + Exposure to **Juniper Junos** is a plus. **Required Skills** + Routing & Switching + Cisco ACI + VXLAN / EVPN + F5 BIG-IP or Citrix NetScaler + Network Troubleshooting + Cisco Nexus & Catalyst **Preferred Skills** + Juniper Junos + FabricPath + SSL Offloading + Wireshark / tcpdump + ServiceNow + Microsoft Visio **Soft Skills** + Excellent verbal and written communication skills. + Strong documentation and network diagramming capabilities. + Ability to work in a collaborative, fast-paced support environment Cognizant is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.

📌 Routing Switching Networking - Expert (Chennai)
🏢 Cognizant
📍 Chennai