Role: Network Engineer LAN, WLAN & Security

Experience:7+ Years

Location: Chennai

Role Summary

We are seeking an experienced Network Engineer with strong 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 environments, with a robust 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 SpineLeaf and VXLAN.
Implement and manage Layer2 and Layer3 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 crossfunctional teams, vendors, and stakeholders during transitions and BAU operations.

Technical Skills

LAN & Data Center Networking
Aruba LAN / Aruba Switching
STP, VLAN, VXLAN
SpineLeaf 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

Experience & Qualifications
1012 years of experience in Enterprise LAN/WLAN and Network Security settings (flexible based on role level).
Handson experience with Aruba LAN, Aruba Wireless, Palo Alto Firewalls, and ClearPass.
Solid troubleshooting and analytical skills.
Experience supporting global enterprise networks is preferred.

📌 Network Engineer Chennai (India)
🏢 Tata Consultancy Services
📍 India