Senior Network Consultant- Contract

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.

Key Responsibilities

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. Multi-Vendor Network Security & Infrastructure Support Deploy, configure, maintain and troubleshoot enterprise network security appliances, particularly Cisco ASA and For