Network Engineer – LAN, WLAN & Security

Role Summary

We are seeking an experienced Network Engineer with robust expertise in Enterprise LAN, WLAN, Firewall Security, and Network Access Control (NAC) technologies. The role involves design, implementation, operations, and troubleshooting of campus and data center network settings, with a solid focus on Aruba switching, Aruba Wireless, Palo Alto firewalls, and Aruba ClearPass.

Key Responsibilities
Design, implement, and support Enterprise LAN and WLAN environments.
Configure, manage, and troubleshoot Aruba LAN and switching infrastructure.
Support Data Center networking including modern architectures such as Spine‑Leaf and VXLAN.
Implement and manage Layer‑2 and Layer‑3 technologies including STP and VLANs.
Operate and support Aruba Wireless solutions, ensuring optimal performance and availability.
Manage Firewall security using Palo Alto, including zoning and segmentation.
Administer Aruba ClearPass for Network Access Control (NAC), authentication, authorization,



and policy enforcement.
Perform incident, problem, and change management activities in line with ITIL processes.
Conduct root cause analysis (RCA) and support continuous service improvement.
Maintain accurate network documentation, diagrams, and configuration records.
Collaborate with cross‑functional teams, vendors, and stakeholders during transitions and BAU operations.

Technical Skills

LAN & Data Center Networking
Aruba LAN / Aruba Switching
STP, VLAN, VXLAN
Spine‑Leaf architecture
Arista switching (preferred)
Data Center networking concepts

WLAN
Aruba Wireless
Aruba Central
Instant Access Points (IAP)

Firewall & Security
Palo Alto Firewalls
Network zoning and segmentation

Network Access Control
Aruba ClearPass
Authentication and authorization
Policy enforcement
Profiling and access control

📌 Network Switching Lan Technology Chennai
🏢 Tata Consultancy Services
📍 Chennai