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Data Network Consultant
HCLTech Sri Lankalinkedin.com
Sep 25, 2026, 11:03 AM3w ago
Full-timeWestern ProvinceSenior (10+ yrs)
About the role
The Data Network Consultant is responsible for leading network infrastructure operations, including advanced technical diagnostics, troubleshooting, and execution of complex changes across multiple technology domains. The role involves overseeing incident management to ensure rapid restoration of services, driving operational continuous improvement, and providing feedback to engineering and deployment teams. The consultant is expected to have deep expertise in network technologies, routing and switching, network security, and infrastructure, as well as strong professional and communication skills. The position is suited for individuals with significant experience in large enterprise or carrier-grade networks.
Must have
- 10+ years of experience with an MSP, ISP, major carrier, or very large enterprise network.
- Expert level at troubleshooting and diagnostics.
- Able to perform (advanced level) configuration, testing, and troubleshooting of IP network infrastructure.
- Ability to configure / implement complex network changes.
- Strong and broad technical knowledge and experience with: Converged infrastructure, Switching / Routing in a large and complex network, DHCP, DNS, IP (Schema, Subnetting, Summarization), IP Management Tools, Network Management Applications, Advanced WAN Routing, WAN / LAN / Wireless LAN Topologies, MPLS and other WAN Technologies, Traffic Shaping / QoS, EIGRP / BGP, Multimedia / VoIP Solutions (SIP), Firewalls.
- Strong to expert knowledge of Routing and Switching systems.
- Strong understanding of Routing Protocols: OSPF, EIGRP, BGP.
- Strong understanding of Gateway Redundancy Protocols: HSRP, VRRP, GLRP.
- Strong knowledge of: VoIP, Multicast, STP, VTP, Virtual LANs (VLANs), Trunking (VLANs), Network Security (ACLs, IPSec Tunnels), Firewalls (Security Appliances), NetFlow, IPSLA, VPN Technologies.
- Excellent written and oral communication skills.
- Ability to effectively prioritize and execute in a high-pressure environment.
- Exceptional customer service orientation.
- Extensive experience working in a team-oriented, collaborative environment.
Technologies
- BGP
- DevOps
- DHCP
- DNS
- Firewall
- IPsec
- MPLS
- Network Security
- OSPF
- QoS
- VLAN
- VoIP
- VPN
- WAN