Lucknow, Uttar Pradesh

Job Summary

We are seeking a highly experienced Network Level 3 (L3) Engineer to support and manage the Mercedes Benz enterprise network landscape under HCLTech\'s Managed Services engagement. The role demands deep hands-on expertise across Cisco & HPE/Aruba LAN/WLAN, Cygna Labs and Infoblox DDI (DNS, DHCP, IPAM), and the ability to design, deploy, and operationalize Cisco DNAC and Aruba Central platforms during the transition phase.

The engineer will work on complex incidents, problem management, changes across Category A (Large sites

Key Responsibilities

LAN / WLAN Operations (Cisco & HPE/Aruba)

- Provide L3 support for Cisco Catalyst 9K/6K/4K, Nexus, Cisco WLCs (5508/5520/9800), Cisco APs, and HPE/Aruba switches, Aruba Mobility Controllers, Aruba APs, and Airwave.

- Own root cause analysis (RCA), problem management, and permanent fix implementation for P1/P2 incidents in a dual-vendor setting (~90% Cisco, ~10% HPE/Aruba).

- Support the Traditional 3-Tier Architecture (Category A), Collapsed Core with Service Layer (Category B),



and Converged Core (Category C) deployments with redundancy at each layer, including common services (WLC, ISE PSN).

- Manage localized WLC deployments, RF design tuning, capacity planning, roaming optimization, and guest access solutions (Captive Portal with Username/Password, Free Internet with T&C;, MAB for IoT).

- Drive config drift remediation, IOS/AOS-CX upgrades, code compliance, and hardware lifecycle (RMA) activities.

- Perform change implementations via ServiceNow following Doer-Checker model, with evidence-based pre/post checks.

2.2 DDI - Infoblox & Cygna Labs (runIP / IPControl)

- Manage and support Infoblox / Cygna Labs runIP (~200 appliances + 2 Management Servers) and IPControl (2x DB + 2x CAA) for DNS, DHCP, and IPAM services across ~70 DDI sites.

- Handle DNS Security, External DNS (Hidden Master in DMZ, Slave in Cloud), and coordinate with Central DNS forwarder

📌 Track Lead (Lucknow)
🏢 HCLTech
📍 Lucknow