Network Architect

We are looking for a senior hands-on Network Architect / Engineer to take ownership of the organisation's network architecture, engineering, and day-to-day technical delivery.

This is a hands-on architecture and engineering role, rather than a pure design or governance position. You will be responsible for designing network solutions, configuring infrastructure, executing production changes, troubleshooting complex incidents, and driving network improvements across a multi-site environment.

The environment includes enterprise networking across multiple locations, an Azure hub-and-spoke architecture, hybrid connectivity through ExpressRoute and VPN, as well as connectivity to external partners and business-critical services.

Network availability, resilience, and latency are particularly important to the business, so the role requires someone who is comfortable operating in a high-performance environment where network issues can have a direct business impact.

Key Responsibilities

• Take ownership of the overall network architecture and engineering standards across multiple sites, covering campus networks, data centres, WAN, and remote access.
• Design, configure, and maintain routing, switching, wireless, and firewall infrastructure hands-on, including developing and implementing network configurations.
• Lead and execute production network changes, maintenance activities, and cutovers, ensuring appropriate testing and rollback plans are in place.
• Troubleshoot complex network issues using packet captures, traffic-flow analysis, and device-level diagnostics, taking ownership from initial incident through root-cause identification and permanent resolution.
• Manage the network segmentation strategy and firewall policies, ensuring appropriate separation between business-critical, corporate, guest, and management environments.
• Design and implement the Azure network environment in collaboration with the Cloud Solutions Architect, including hub-and-spoke architecture, network peering, routing, security groups, ExpressRoute, and VPN connectivity.
• Lead network implementation for new office deployments, relocations, and regional expansion, covering activities from carrier coordination and connectivity procurement through to final cutover.
• Manage connectivity with external market data providers, brokers, counterparties, and other third parties, including cross-connects, extranet connectivity, and associated resilience requirements.
• Oversee network capacity, latency, resilience, and failover, as well as firmware/patch management and network monitoring to maintain reliable operations and adequate security visibility.
• Develop network automation and configuration standards using tools such as Python, Ansible, and Terraform, while maintaining architecture documentation aligned with relevant technology risk and cybersecurity frameworks.

Requirements

• 8+ years of hands-on network engineering experience, including at least 3 years in network architecture and design. Experience within regulated financial services or similarly controlled environments is advantageous.
• Must remain technically hands-on, with current experience configuring, troubleshooting, upgrading, and maintaining network infrastructure rather than purely managing or overseeing other engineers.
• Strong expertise in enterprise routing and switching, including BGP, OSPF, VLANs, Spanning Tree, QoS, and multicast.
• Solid experience in next-generation firewall design and administration, including policy management, ruleset governance, NAT, IPS, and secure remote access.
• Strong knowledge of Azure networking, including Virtual Networks, hub-and-spoke architecture, ExpressRoute, VPN Gateway, Azure Firewall, Network Security Groups, and Application Security Groups.
• Experience across WAN and network-edge technologies, including SD-WAN, MPLS, Internet edge architecture, carrier management, and diverse connectivity across multiple locations.
• Strong understanding of core network services, including DNS, DHCP, IP address management, DNS security, enterprise wireless, and RF planning.
• Advanced troubleshooting capabilities, including packet capture and analysis, latency/jitter troubleshooting, and structured fault isolation across Layers 1-7.
• Experience implementing network automation and monitoring using Python, Ansible, Terraform, and enterprise monitoring or network-flow analysis platforms.
• Proven track record of delivering multi-site network implementations and cutovers from planning through completion.
• Willingness to support out-of-hours maintenance activities and escalation/on-call rotations, with strong communication skills and the ability to clearly explain the business impact of technical decisions and network issues.

Application

Dear Applicant,

If you or someone you know is interested, please send the CV directly to [Confidential Information] (most preferred, as I may overlook some CVs due to the high volume).

Please note that visa sponsorship is not available at this time.