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Sanderson

Greater London / Global

Senior Network Engineer

Job Description

We’re looking for a Senior Network Engineer to design, secure, and operate a large-scale hybrid network across Microsoft Azure, corporate offices, datacentres, and a nationwide retail estate.

This is a hands‑on role with architectural input, covering Azure networking, enterprise LAN/WAN, firewalls, SD‑WAN, hybrid connectivity, and retail store networking. You’ll be responsible for availability, performance, resilience, and security across both corporate and customer‑facing environments.

London Based

What You’ll Do

Design and operate Azure networking (VNets, routing, Azure Firewall, VPN Gateway, ExpressRoute, load balancing)
Manage enterprise LAN/WAN using Cisco, Meraki, Aruba, Juniper, or equivalent
Deploy and support firewalls (SonicWall, Palo Alto, Fortinet) and secure network segmentation
Design and support retail store networks (Meraki, SD‑WAN/MPLS, POS connectivity, Wi‑Fi, 4G/5G failover)
Operate hybrid connectivity between Azure and on‑prem environments
Monitor and troubleshoot complex network issues across cloud, datacentre, and retail
Automate network builds using Terraform, PowerShell, Python, or Azure CLI
Work with vendors, carriers, and service providers to maintain SLA performance
Enterprise routing, switching, and firewall expertise
Proven retail networking and POS support experience
Deep knowledge of TCP/IP, BGP, OSPF, VPNs, DNS/DHCP, IPv4/IPv6
Experience with SD‑WAN and hybrid cloud connectivity
Excellent troubleshooting and documentation skills
Azure Virtual WAN or cloud firewalls
AWS networking exposure

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