David Varghese

• Performed proactive diagnostics and root cause analysis for network alarms, ensuring early detection and resolution of faults.
• Managed the entire incident lifecycle, including triaging, prioritizing, and escalating tickets, while maintaining strict SLA adherence.
• Supported day-to-day Change and Fault Management operations, following ITIL best practices and internal process frameworks.
• Coordinated with L2 support engineers, vendors, and third parties to resolve high-priority issues and minimize business impact.
• Delivered timely updates and maintained consistent customer engagement via bridge calls, particularly during service outages and escalations.
• Maintained zero process and escalation misses, while effectively managing the support queue and multitasking across concurrent incidents.
• Actively sensitized faults/issues based on business impact, ensuring accurate prioritization and escalation within the management chain.

TECHNICAL SKILLS :

• BGP, OSPF, VLAN, STP, VTP, ARP, DHCP.
• Cisco SDWAN (Viptela), Juniper SDWAN
• MPLS, DIA, IPVPN, Ethernet wireline, Direct voice, indirect voice (SIP)
• Storm, VONE-M, VONE-C

TICKETING TOOLS :

• Service now, BMC remedy, Cramer

PROJECTS :

• Toll holdings, Cisco, Apple, Premier foods, Hovis, Flender.

• Monitored network infrastructure using advanced monitoring systems to identify actionable incidents and resolve network events with strong analytical and troubleshooting skills.
• Participated in major incident and event calls, coordinated with SMEs and support teams, and provided detailed root cause analysis and corrective actions.
• Maintained accurate logs of equipment failures and collaborated with vendors (TAC) and engineers to ensure timely resolution and hardware support.
• Contributed to 24x7 global network operations, working collaboratively with a world-class distributed team to support enterprise-level network infrastructure.

TECHNICAL SKILLS :

• BGP, OSPF, VLAN, STP, VTP, ARP, DHCP.
• MPLS, DIA, IPVPN.

TICKETING TOOLS :

• BIT, Slack

CLIENTS :

• TCL, Telstra, Vodafone, Singtel.

• Configured and installed a range of network devices including routers, switches, firewalls, VPNs, and QoS services, along with radio devices such as Telsima WiMAX and Radwin PTP/PMP.
• Troubleshot and resolved issues in RF broadcasting equipment and E1-to-Ethernet converters (Pine, Ether Access), minimizing service impact.
• Performed RF testing and analysis for existing wireless networks, ensuring compliance with industry and regulatory standards.
• Utilized specialized software tools for RF network design and optimization of new wireless installations.
• Conducted ongoing network performance monitoring, system maintenance, and upgrades including patches, service packs, and security configurations.
• Collaborated with field teams and managed customer escalations, ensuring minimal disruption and prompt service restoration.
• Prepared and shared daily performance dashboards, escalated high-severity issues to appropriate teams, and led root cause analysis to prevent recurrence.

TECHNICAL SKILLS :

• BGP, OSPF, VLAN, STP, VTP, ARP, DHCP.
• UBR radios- Cambium, Radwin.
• LBR- Tesima Wimax
• E1-Ethernet convertors (Pine)
• Multiplexers- ALU, STM4, STM16
• Switch, router upgradation activities, Data centre planned event activities.

TICKETING TOOLS :

• Service now, Cramer

CLIENTS:

• Banks, Private financial organizations, other ISPs