Tata Consultancy Services
Network Engineer LAN WLAN and Security
Skills
19 days ago
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Important information
Contract type:
Permanent
Location:
Chennai, Tamil Nadu, India
Work mode:
Onsite
Published on:
5 October 2026
What they need
Network Engineer LAN, WLAN & SecurityRole SummaryWe 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 strong 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 SkillsLAN & 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
10–12 years of experience in Enterprise LAN/WLAN and Network Security environments (flexible based on role level).
Handson experience with Aruba LAN, Aruba Wireless, Palo Alto Firewalls, and ClearPass.
Strong troubleshooting and analytical skills.
Experience supporting global enterprise networks is preferred.
**Certifications (Preferred)**Certification ID.Planned CertificationACE-A1.2Arista LANHPE6-A88Aruba Clearpass Aruba LANHPE6-A85Aruba WirelessNGFW-ENGINEERPaloAlto Certified Engineer Zscaler Role & responsibilities
Preferred candidate profile
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