Senior Network Consultant

We are seeking a highly experienced Senior Network Consultant with extensive hands- on expertise in designing, implementing, managing and troubleshooting complex enterprise network infrastructures across mission-critical environments.

The successful candidate will possess deep technical competencies in multi-vendor routing, switching, network security, wireless infrastructure and WAN connectivity, with proven experience supporting large-scale network deployments across highly demanding industries such as banking, financial services, healthcare and data centres.

This role requires a combination of advanced technical troubleshooting, infrastructure project delivery, technical consultancy, stakeholder management, presales engagement and leadership capabilities.

• Enterprise Network Infrastructure & Architecture
• Lead the implementation, configuration, optimisation and lifecycle management of complex enterprise LAN, WAN and data centre network infrastructures.
• Provide advanced technical support for heterogeneous network environments incorporating Cisco, Juniper, Fortinet, Extreme Networks and other enterprise networking technologies.
• Design, deploy and maintain Layer 2 and Layer 3 switching architectures, including VLAN segmentation, inter-VLAN routing, trunking, Spanning Tree Protocol and network redundancy.
• Implement and troubleshoot dynamic routing protocols, including BGP, OSPF and MPLS-based WAN connectivity.
• Support IP addressing, TCP/IP connectivity, DHCP services, Quality of Service (QoS) and network traffic optimisation.
• Perform network infrastructure migrations, hardware refreshes, system upgrades and installation, move, add and change (IMAC) activities.
• Maintain high availability, network resilience and service continuity across business-critical infrastructure environments.

• Deploy, configure, maintain and troubleshoot enterprise network security appliances, particularly Cisco ASA and Fortinet firewalls.
• Support network security policies, firewall rule configurations, access controls and secure network segmentation.
• Work across integrated routing, switching, firewall and wireless environments to identify and resolve complex connectivity and performance issues.
• Support network security incident investigations, technical escalations and remediation activities.
• Collaborate with infrastructure and security teams to ensure network implementations align with organisational security standards.

• Act as a senior technical escalation point for complex network incidents affecting enterprise and mission-critical customer environments.
• Diagnose and resolve multi-layer network issues involving routing protocols, switching, WAN connectivity, firewall policies, wireless infrastructure and network performance.
• Conduct root cause analysis for recurring incidents, service interruptions and infrastructure failures.
• Provide technical support during planned and unplanned outages, network maintenance and emergency restoration activities.
• Coordinate technical escalations and hardware replacement processes with multiple technology vendors and OEM support teams.
• Participate in after-hours maintenance, incident response and critical infrastructure recovery activities when required.
• Work on a 24/7 rotating shift schedule to provide continuous network monitoring

• Implement and maintain enterprise wireless infrastructure incorporating Wireless LAN Controllers (WLC), wireless access points and associated network services.
• Support multi-vendor wireless technologies, including Cisco Meraki, Aruba, Extreme Networks and Ruckus.
• Troubleshoot wireless connectivity, network access, performance and integration issues.
• Support the integration of wired and wireless networks within complex enterprise environments.

• Provide technical consultancy and solution recommendations for enterprise network infrastructure projects.
• Participate in presales activities, including technical solution discussions, site surveys, tender specification reviews and bid clarification sessions.
• Collaborate with sales teams, project managers, engineers, technology partners and customers to translate business requirements into practical network solutions.
• Lead or coordinate infrastructure deployment, migration, commissioning and acceptance testing activities.
• Support project cost estimation, resource…