SME - Wireless Networking

HCLTech; United States; On-site; USD 110,000 - 160,000; Full time

Job summary

HCL Technologies Limited is seeking a senior Network L3 Engineer to design, implement, and optimize complex enterprise networks across campus, data center, WAN, and wireless environments. You will provide architectural guidance, perform RCA, and lead improvements for voice, video, and data traffic.

The role requires deep Cisco expertise, SD‑WAN, ACI, wireless architectures, and experience with DNAC-driven automation and health monitoring.

Qualifications

• Extensive understanding of enterprise network architectures and protocols.
• Experience with routing, switching, and data center networks.
• Expertise in Cisco networking technologies and SD‑WAN implementations.

Responsibilities

• Serve as Level 3 escalation for complex network incidents and perform RCA.
• Design, review, and optimize campus, data center, WAN, and wireless networks.
• Lead architecture deployment of Cisco wired/wireless networks and SD‑WAN.
• Define standards for scalability, resiliency, redundancy, and security.
• Oversee DNAC-driven provisioning, automation, and assurance workflows.

Skills

OSI model

TCP/IP

BGP

OSPF

EIGRP

MPLS

QoS

Wireless design

DNAC

SD-Access

WLC

Leadership

Communication

Tools

Cisco ACI

DNAC

Wireshark

Cisco WLC

SD-WAN

NNMI

Job description

Career Opportunities: SME - Wireless Networking (145557)

Requisition ID145557-Posted10/30/2026

The Network L3 Engineer is a senior technical role responsible for the design, implementation, optimization, and advanced troubleshooting of complex enterprise networks, including LAN, WAN, Data Center, SD‑WAN, and Wireless infrastructures. The role serves as the final escalation point for critical incidents and provides architectural guidance, root cause analysis, and continuous improvement initiatives. The position requires strong expertise in Cisco enterprise networking, including SD‑WAN, routing, switching, wireless, Cisco ACI, in large‑scale, highly available, converged environments supporting voice, video, and data traffic

Key Responsibilities

Advanced Operations & Escalation Support Act as the Level 3 escalation point for complex and high‑impact network incidents. Perform deep technical troubleshooting and root cause analysis (RCA) for recurring or major incidents across wired and wireless networks. Ensure network stability, performance, and availability while meeting SLA and business continuity requirements. Provide technical leadership and guidance to L1 and L2 teams, including troubleshooting support and knowledge transfer. Network Design & Architecture Design, review, and optimize enterprise campus, data center, WAN, and wireless network architectures. Lead architecture and deployment of: Cisco Wired & Wireless networks Cisco SD‑WAN (Viptela) Cisco ACI for data center networking Define standards for network scalability, resiliency, redundancy, and security. Routing, Switching & WAN Technologies Design, implement, and troubleshoot advanced routing and switching solutions using: BGP, OSPF, EIGRP MPLS (L2/L3 VPNs, WAN integration) STP, HSRP/VRRP, Multicast Lead optimization of QoS policies to support real‑time voice and video traffic. Architect high‑availability and load‑balancing solutions across campus and WAN infrastructures. Wireless Networking & DNAC Design, deploy, and support enterprise‑grade wireless networks, including: Cisco Wireless LAN Controllers (WLC) Lightweight Access Points Perform wireless site surveys, RF optimization, and capacity planning. Troubleshoot complex wireless issues related to: RF interference Roaming Authentication Performance and coverage Implement and manage Cisco DNA Center (DNAC) features such as: Network provisioning and automation Assurance and health monitoring Policy‑based segmentation (SD‑Access) Lead wired and wireless integration using DNAC‑driven workflows

Skill Requirements

Expert knowledge of OSI and TCP/IP models Advanced expertise in: BGP, OSPF, EIGRP, MPLS STP, HSRP/VRRP, Multicast QoS for converged networks Strong understanding of: Wireless LAN design and RF principles Cisco DNAC and SD‑Access Data center and enterprise campus networking Familiarity with network security integrations and policies Tools & Technologies Cisco ACI, SDWAN, DNAC NNMI Wireshark Cisco WLC and Access Points ITSM tools (Incident, Change, Problem Management)

Other Requirements

Soft Skills & Leadership Competencies Strong technical leadership and mentoring abilities Excellent communication with technical and non‑technical stakeholders Ability to work independently and with global, distributed teams Analytical mindset with proactive problem‑solving skills