Tech Lead

Network L3 Engineer

Seeking an experienced Network L3 Engineer to provide onsite support for a large enterprise environment. The resource will act as the highest level of technical escalation for complex network issues across SD-WAN, Firewalls, Wireless, Routing, and Switching infrastructure, while driving incident resolution, problem management, optimisation, and network transformation initiatives.

Key Responsibilities:

• Provide L3 technical support and serve as the final escalation point for network incidents and outages.
• Troubleshoot complex issues related to SD-WAN, Firewalls, Wireless, Routing, and Switching technologies.
• Perform root cause analysis (RCA) and implement permanent corrective actions.
• Execute network changes, migrations, upgrades, and maintenance activities.
• Support major incidents and lead technical bridge calls with customer stakeholders.
• Analyse network performance and implement optimisation recommendations.
• Review network designs and provide architecture-level inputs.
• Ensure compliance with security standards, policies, and best practices.
• Support disaster recovery and business continuity initiatives.
• Maintain technical documentation, network diagrams, and operational procedures.
• Coordinate with OEMs, ISPs, and third-party vendors for issue resolution.
• Provide mentoring and guidance to L1/L2 engineers.

Technical Skills Required:

• SD-WAN: Cisco SD-WAN (Viptela), Fortinet Secure SD-WAN, Versa or equivalent. Overlay/Underlay troubleshooting. Policy design and deployment. Application-aware routing. WAN optimisation and performance analysis.
• Firewall: Fortinet FortiGate (Preferred). Palo Alto, Check Point, Cisco Firepower. Security policy management. VPN (IPSec/SSL VPN) troubleshooting. NAT, Security Zones, Threat Prevention.
• Wireless: Cisco Wireless LAN Controllers. Cisco Meraki Wireless. Aruba Wireless. RF troubleshooting and wireless performance optimisation. Guest access and authentication troubleshooting.
• Routing Switching: Cisco Catalyst/Nexus platforms. Layer 2 Layer 3 troubleshooting. OSPF, EIGRP, BGP. HSRP, VRRP, STP, EtherChannel. Multicast fundamentals. QoS implementation and troubleshooting.
• Network Monitoring Tools: SolarWinds, PRTG, NetBrain, DNAC, Meraki Dashboard.
• Packet capture and analysis using Wireshark.
• Network automation exposure using Python, Ansible, APIs.
• ITIL Incident, Problem, and Change Management processes.

Additional Skills:

Strong customer-facing and stakeholder management skills.

Key Competencies:

• Strong troubleshooting and analytical skills.
• Ability to handle critical incidents independently.
• Excellent communication and customer management skills.
• Experience working in enterprise and multi-site environments.
• Ability to lead technical discussions and provide strategic recommendations.