Role Summary:
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.
Additional Skills
- 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.
- Strong customer-facing and stakeholder management skills.
Certifications (Preferred)
- CCNP Enterprise / CCIE Enterprise.
- Fortinet NSE 4/5/7 or FCSS.
- Palo Alto PCNSE.
- Cisco SD-WAN Specialist.
- Aruba Certified Professional.
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.