Wireless Network Engineer Tata Consultancy Services

5.0 - 10.0 years

1 - 3 Lacs

Hyderabad, Greater Noida, Delhi / NCR

Work from Office

Job Summary: We are seeking a highly experienced Level 3 Wireless Network Engineer with deep expertise in both Cisco and Aruba wireless technologies . The ideal candidate will lead the design, deployment, troubleshooting, and optimization of enterprise-grade wireless infrastructures. You will act as a subject matter expert (SME), resolving high-level wireless issues and driving continuous improvements in performance, scalability, and security. Key Responsibilities: Design and deploy large-scale wireless LAN (WLAN) environments using Cisco WLCs and Aruba (Mobility Controllers, Instant APs, Central). Optimize channel planning , band steering , and power level adjustments to reduce interference and maximize coverage. Architect and implement high-availability wireless designs , including N+1 controller redundancy, LAGs, VRRP/HA groups. Administer Cisco WLCs (9800) and Aruba Mobility Controllers (MM/MC architecture) . Configure WLANs, SSIDs, AAA policies, and AP groups with role-based access control (RBAC). Implement Fast Roaming (802.11r/k/v) , bandwidth throttling , application visibility , and WIPS/WIDS . Manage firmware upgrades , controller failovers , and AP image preloading strategies. Integrate with RADIUS servers (ISE, forescout) for 802.1X authentication. Configure Guest access portals , MAC-based authentication , and Captive Portals (internal and external). Analyze wireless packet captures using Wireshark , or Aruba AirWave/Central . Resolve L2/L3 roaming issues, high latency, client disconnections, and interference problems. Monitor KPIs like SNR, RSSI, retransmission rates, and throughput to identify RF anomalies. Correlate client issues using Aruba Central Required Skills & Experience: 5+ years of experience in enterprise wireless networking . Strong hands-on expertise in both Cisco and Aruba wireless ecosystems . Proficiency with: Cisco Wireless LAN Controllers (9800 Series, AireOS, Catalyst APs) Aruba Controllers , Instant APs , Aruba Central , AirWave Wireless security protocols : WPA2/WPA3, 802.1X, PSK, MAC auth Authentication systems : Cisco ISE RF tuning , mesh networks , client load balancing , high-density deployment Strong understanding of Layer 2/3 networking , VLANs , Multicast , QoS , and DHCP relay . Comfortable with CLI (Cisco IOS/XE, Aruba OS) and web-based UIs . Experience with cloud-managed wireless solutions (Aruba Central, Cisco Meraki is a plus). Familiarity with Wi-Fi 6 and Wi-Fi 6E features and limitations. Preferred Certifications: Cisco Certified Specialist Enterprise Wireless Aruba Certified Mobility Professional (ACMP) Soft Skills: Strong analytical and troubleshooting skills. Excellent documentation and communication abilities. Proven leadership in high-severity incidents and RCA investigations. Capable of mentoring L1/L2 engineers and leading knowledge transfer sessions. Ability to manage multiple priorities and work independently. Role & responsibilities Wireless Network Engineer Experience 5+ years location delhi ncr hyderabad jd

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