Network Engineer

Experience: 6+ Years

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
.

• 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.
• Design, review, and optimize enterprise campus, data center, WAN, and wireless network architectures
  .
• Lead architecture and deployment of:
• Cisco Wired & Wireless networks
• Define standards for network scalability, resiliency, redundancy, and security.

• Design, implement, and troubleshoot advanced routing and switching solutions using:
• BGP, OSPF, EIGRP
• MPLS (L2/L3 VPNs, WAN integration)
• 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.

• 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
• Performance and coverage
• Implement and manage Cisco DNA Center (DNAC) features such as:
• Network provisioning and automation
• Assurance and health monitoring
• Lead wired and wireless integration using DNAC‑driven workflows
  .
• Advanced hands‑on experience with:
• Support and integrate multi‑vendor solutions including:
• Infoblox DNS/DHCP/IPAM

• Own and execute high‑risk and large‑scale network changes
  , including migrations, upgrades, and data center or campus refreshes.
• Review and approve change plans
  , ensuring proper design and rollback strategies.
• Drive network automation, standardization, and continuous improvement initiatives using DNAC and scripting approaches.

• Design and maintain enterprise monitoring strategies using:
• Solar Winds and SNMP‑based tools
• Conduct advanced packet‑level and RF analysis using:
• Wireshark and wireless diagnostic tools

• Expert knowledge of OSI and TCP/IP models
• Advanced expertise in:
• BGP, OSPF, EIGRP, MPLS
• 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

• NNMI
• Wireshark
• Cisco WLC and Access Points
• ITSM tools (Incident, Change, Problem Management)
• 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
• Large enterprise or service‑provider network environment
• On‑call support for critical outages
• C…