Cisco Wireless / Aruba Migration - Network Engineering Advisor

NTT DATA Services; Dadri, Bengaluru, Hyderabad; On-site; INR 1,600,000 - 3,200,000; Full time

Job summary

NTT DATA Services is seeking an experienced L3 Wireless Network Engineer to lead migration efforts from Aruba to Cisco Catalyst Wireless platforms. You will manage complex wireless incidents, perform design validation, and drive optimization across enterprise environments.

The role requires hands-on expertise with Cisco WLCs, Catalyst APs, and 802.11 protocols, coordinating with site teams for successful migrations and post-migration health checks.

Qualifications

• L3 Wireless Network Engineer with Cisco WLC expertise.
• Experience migrating Aruba to Cisco infrastructure.
• Strong troubleshooting across WLC, AP, RF and authentication.

Responsibilities

• Provide L3 operational and engineering support for enterprise Cisco wireless environments.
• Lead or support Aruba-to-Cisco migration across large enterprise locations.
• Design, optimize, and validate wireless architectures and RF performance.

Skills

Cisco WLC expertise

Cisco troubleshoot Wireless

Cisco Catalyst APs

Aruba to Cisco migration

Aruba Wireless knowledge

802.11 protocols

WLC/AP troubleshooting

Tools

Aruba AirWave

Aruba Central

Job description

Cisco Wireless / Aruba Migration - Network Engineering Advisor

Date: Oct 31, 2026

Company: NTT DATA Services

NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization,

We are currently seeking a Cisco Wireless / Aruba Migration - Network Engineering Advisor to join our team in Noida, Bangalore, Hyd, Uttar Pradesh (IN-UP), India (IN).

Role Summary

We are looking for an experienced L3 Wireless Network Engineer with strong hands‑on expertise in Cisco Wireless LAN Controllers (WLC), Cisco Catalyst Wireless platforms, enterprise WLAN design, troubleshooting, and migration of wireless infrastructure from Aruba to Cisco .

The engineer will act as a senior technical resource responsible for complex wireless incidents, problem management, design validation, implementation, optimization, and migration activities across large enterprise environments.

The role requires strong troubleshooting capability across the complete wireless stack, including Wireless LAN Controllers, Access Points, RF, authentication, switching, DHCP/DNS, AAA/RADIUS, Cisco ISE, and client connectivity .

Key Responsibilities

Cisco Wireless LAN Controller – L3 Support

Provide L3 operational and engineering support for enterprise Cisco wireless environments.

Configure, manage, troubleshoot, and optimize:

• Cisco Catalyst 9800 Wireless LAN Controllers
• Cisco AireOS WLC platforms where applicable
• Cisco Catalyst Access Points
• Troubleshoot complex wireless connectivity, roaming, authentication, RF, performance, and client onboarding issues.
• Perform detailed root cause analysis for recurring and major wireless incidents.
• Analyse WLC and AP logs, debugs, packet captures, and client connection statistics.

Troubleshoot issues involving:

• AP registration
• CAPWAP
• Client association
• DHCP
• DNS
• VLAN assignment
• Roaming
• RF interference
• Poor signal / SNR
• High channel utilization
• Throughput degradation

Configure WLANs, SSIDs, policies, RF profiles, AP groups/tags, VLAN mappings, and mobility configurations.

Perform software upgrades, controller migrations, AP upgrades, and infrastructure lifecycle activities.

Support High Availability and redundancy configurations for wireless controllers.

Aruba-to-Cisco Wireless Migration

Lead or support migration of enterprise wireless infrastructure from Aruba Wireless to Cisco Catalyst Wireless .

Aruba Mobility Controllers

Aruba Mobility Conductor/Master

Aruba Access Points

SSIDs

AAA profiles

VLAN mappings

RF configurations

Authentication policies

Translate existing Aruba wireless configurations and policies into equivalent Cisco configurations.

SSIDs/WLANs

VLANs

802.1X

AP groups

Access policies

Support AP replacement and migration activities across enterprise locations.

Validate coverage, authentication, roaming, connectivity, and application performance following migration.

Perform pre- and post-migration health checks.

Troubleshoot migration‑related client compatibility and authentication issues.

Work closely with site teams and field engineers during physical AP replacement and cutover activities.

Wireless Design and Optimization

Review wireless architecture and provide recommendations for improvements.

Analyse RF performance and recommend channel, power, and coverage optimization.

Understand and troubleshoot:

• 2.4 GHz
• 5 GHz
• 6 GHz
• Wi‑Fi 5 / 802.11ac
• Wi‑Fi 6 / 802.11ax
• Wi‑Fi 6E

Analyse RSSI, SNR, channel utilization, interference, retransmissions, and client density.

Support wireless capacity planning and high‑density deployments.

Review wireless survey outputs and recommend AP placement or RF changes.

Identify coverage gaps and performance issues.

Authentication and Cisco ISE Integration

Strong understanding of enterprise wireless authentication technologies including:

• 802.1X
• EAP‑TLS
• PEAP
• MAC Authentication Bypass
• Wireless clients
• Active Directory
• PKI/Certificate infrastructure

Analyse RADIUS transactions and Cisco ISE authentication logs.

Support dynamic VLAN assignment and role/policy‑based access.

Troubleshoot certificate and supplicant‑related wireless issues.

Switching and Network Integration

Strong understanding of how wireless infrastructure integrates with LAN infrastructure.

Troubleshoot:

• VLANs
• DHCP
• DNS
• Routing
• ACLs
• QoS
• PoE
• AP switch‑port connectivity and power issues.

Support integration with Cisco Catalyst switching environments.

Incident, Problem and Change Management

Handle complex L3 incidents escalated from L1/L2 teams.

Participate in P1/P2 major incident troubleshooting and technical bridge calls.

Perform technical root cause analysis and produce RCA documentation.

Identify recurring infrastructure issues and initiate problem‑management activities.

Prepare and review implementation plans, Method of Procedure (MOP), rollback plans, and validation procedures.

Participate in Change Advisory Board discussions where technical representation is required.

Monitoring and Operational Improvement

Monitor wireless infrastructure using enterprise management platforms such as:

• Aruba AirWave
• Aruba Central

Analyse alarms, wireless health scores, client experience, AP availability, and performance.

Identify opportunities for automation and operational improvement.

Develop operational runbooks, troubleshooting procedures, and technical documentation.

Provide technical guidance and knowledge transfer to L1/L2 engineers.

Required Technical Skills

Mandatory Skills

Strong hands‑on experience with Cisco Catalyst 9800 Wireless LAN Controllers .

Strong hands‑on experience troubleshooting Cisco enterprise wireless environments.

Experience with Cisco Catalyst Access Points.

Experience migrating enterprise wireless infrastructure from Aruba to Cisco .

Strong understanding of Aruba Wireless architecture and configuration.

Strong knowledge of enterprise Wi‑Fi architecture and 802.11 protocols.

Strong troubleshooting experience across:

• WLC
• AP