Senior Network Engineer | Network Discovery | Outside IR35

Senior Network Engineer – Azure / Network Discovery
We are looking for an experienced Senior Network Engineer to support a major network discovery and infrastructure assurance project within a complex enterprise environment.
The successful consultant will have strong hands-on experience across enterprise networking, Azure and hybrid cloud infrastructure, with the ability to investigate existing environments, identify gaps in network documentation and produce accurate physical and logical network diagrams.
The Role
You will be responsible for assessing an existing network environment, validating infrastructure configurations and building a comprehensive understanding of network connectivity, traffic flows, security boundaries and service dependencies.
This is a hands-on technical role requiring strong networking expertise, investigative skills and the ability to engage with stakeholders across infrastructure, cloud and security teams.
Key Responsibilities

Conduct technical discovery across enterprise LAN, WAN, wireless, remote access and Azure/hybrid cloud environments.

Review and validate existing network documentation, configurations, inventories and architecture diagrams against live infrastructure.

Map physical and logical network topologies, including routing, switching, VLANs, subnets, IP addressing and connectivity.

Investigate network traffic flows, firewall rules, security zones and application dependencies across on-premise and cloud environments.

Utilise network diagnostic tools, configuration data, routing tables and traffic analysis to identify undocumented infrastructure and inconsistencies.

Work closely with network, cloud, security and application teams to validate findings and produce accurate technical documentation and recommendations.

Essential Skills & Experience

Strong hands-on enterprise networking experience, including LAN, WAN, routing, switching, firewalls, VPNs and network security.

Experience conducting network discovery, infrastructure assessments, technical audits and network documentation.

Strong Azure networking knowledge, including VNets, peering, subnets, NSGs, private endpoints, VPN connectivity and hybrid networking.

Experience documenting physical and logical network architectures, including VLANs, IPv4/IPv6, DNS, DHCP, NAT and IP address management.

Good understanding of network traffic flows, security boundaries, firewall policies and application/service dependencies.

Experience using network diagnostic and discovery tools to investigate configurations, routing, connectivity and network behaviour.

Strong technical documentation skills, including producing network diagrams, infrastructure reports and recommendations.

Desirable

Experience with Wireshark, Azure Network Watcher, IPAM and CMDB platforms.

Knowledge of network resilience, redundancy, failover and disaster recovery.

Experience working within complex public sector or highly regulated environments.

Experience facilitating technical discovery workshops and engaging senior infrastructure stakeholders.

The Details
Contract: 3 monthsIR35 Status: Outside IR35Rate: £500-£550Location: Remote
If you are an experienced Senior Network Engineer with strong enterprise networking and Azure infrastructure expertise, please apply for immediate consideration.