Network Engineer (Routing, Switching, ACI & Load Balancing)

Job Summary

We are looking for a skilled Senior Associate – Networking with strong 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 ResponsibilitiesRouting & 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
- Solid 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

📌 Routing Switching Networking - Expert (Tamil Nadu)
🏢 Cognizant
📍 Tamil Nadu