Wireless Network Security Engineer (L3)

Tata Consultancy Services; Chennai District; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

Tata Consultancy Services seeks an experienced Wireless Network Security Engineer to manage and secure enterprise wireless infrastructure from Chennai for a global environment. You will focus on wireless operations, security governance, troubleshooting, and secure solution implementations using Aruba and Cisco technologies.

Key responsibilities include administering Aruba/Cisco wireless environments, RF planning, deployments, upgrades, and incident analysis, while enforcing security policies and

Qualifications

• Must have experience securing enterprise wireless networks and operating Aruba and Cisco wireless infrastructure.
• Proficient in 802.1X, RADIUS/TACACS+, and WPA2/WPA3 Enterprise security.
• Experience with RF planning, wireless surveys, and performance optimization.
• Strong governance, monitoring, and incident analysis capabilities.

Responsibilities

• Administer and support Aruba and Cisco wireless environments across a large-scale global setup.
• Configure and manage wireless controllers, access points, and related services.
• Perform wireless deployments, upgrades, migrations, and capacity planning.
• Conduct RF analysis, surveys, and performance optimization.
• Support security audits, policy enforcement, and incident response.

Skills

Aruba wireless

Cisco wireless

802.1X NAC

RADIUS/TACACS+

WPA2/WPA3 Enterprise

RF planning & optimization

Security monitoring & incident分析

Troubleshooting L2/L3 wireless

Network security governance

Firmware & software upgrades

Tools

Aruba Central

Aruba AirWave

Aruba ClearPass

Cisco WLCs

Cisco Access Points

Cisco ISE

Job description

We are seeking an experienced Wireless Network Security Engineer to manage, support, secure, and optimize enterprise wireless infrastructure across a large-scale global environment. The role will focus on wireless network operations, security governance, troubleshooting, and implementation of secure wireless solutions using Aruba and Cisco technologies.This is an offshore-based role supporting global operations from Chennai. The candidate will work closely with network, security, and infrastructure teams to ensure a secure, scalable, and highly available wireless environment.

Wireless Technologies

• Aruba Wireless Controllers (Mobility Controllers)
• Aruba Central
• Aruba AirWave
• Aruba ClearPass Policy Manager
• Cisco Wireless LAN Controllers (WLC)
• Cisco Access Points
• Wireless RF Planning and Optimization
• WLAN Security Implementation

Networking

• TCP/IP
• VLANs
• Routing & Switching
• OSPF, BGP, EIGRP
• DHCP, DNS
• Network Segmentation

Security Technologies

• Network Access Control (NAC)
• 802.1X Authentication
• RADIUS/TACACS+
• WPA2/WPA3 Enterprise
• Guest Access Management
• Identity-Based Access Control
• Security Monitoring and Incident Analysis

Good to Have

• Cisco ISE
• SD-WAN
• Azure/AWS Networking
• Python/Automation
• Aruba EdgeConnect
• Zero Trust Networking

Key ResponsibilitiesWireless Infrastructure Management

• Administer and support enterprise Aruba and Cisco wireless environments.
• Configure and manage wireless controllers, access points, and associated services.
• Perform wireless deployments, upgrades, and migrations.
• Conduct RF analysis, wireless surveys, capacity planning, and performance optimization.

Wireless Security Administration

• Manage and maintain Aruba ClearPass and NAC solutions.
• Implement secure wireless authentication mechanisms using 802.1X, RADIUS, and certificate-based authentication.
• Enforce wireless security policies and access controls.
• Manage guest access, BYOD onboarding, and device profiling.

Monitoring & Troubleshooting

• Troubleshoot complex Layer 2/Layer 3 and wireless connectivity issues.
• Perform root cause analysis for recurring network and wireless issues.
• Monitor wireless performance, client health, roaming events, and security incidents.
• Participate in major incident management and problem management activities.

Security Compliance & Governance

• Ensure adherence to enterprise security standards and compliance requirements.
• Support security audits, vulnerability remediation, and risk assessments.
• Review wireless security posture and recommend improvements.
• Implement security hardening and best practices.

Change & Release Management

• Execute planned changes following change management processes.
• Perform firmware and software upgrades on wireless infrastructure.
• Develop rollback plans and validate successful implementations.

Documentation & Reporting

• Create and maintain High-Level Design (HLD), Low-Level Design (LLD), SOPs, and operational runbooks.
• Produce operational reports, security findings, and capacity planning recommendations.
• Maintain accurate network and wireless architecture documentation.