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# Network Engineer - Internet Service Provider

- **Company:** Hamilton Barnes
- **Location:** Greater London, UK
- **Experience:** Expert
- **Salary:** £65,000.0
- **Contract:** Permanent contract
- **Skills:** IEEE 802.1Q, Link Aggregation (Ethernet), Border Gateway Protocol, Protocol Stack, Computer Networks, Network Address Translation, Enhanced Interior Gateway Routing Protocol, Trunking, Virtual Private Networks (VPN), Internet Service Provider, Network Security, Multicasting, Network Monitoring, Routing, Open Shortest Path First (OSPF), Remote Access Technology, Virtual Local Area Networks, Firewall Services Module, Cisco
- **Published:** September 10, 2026
- **Apply:** https://www.collegerecruiter.com/job/2859586204-network-engineer-internet-service-provider

## About the Role

* Experience: 5+ years' hands-on experience supporting a multi-site, enterprise-grade network environment
 * Core Tech/Domain: Strong Cisco routing and switching (R&S) background; comfortable covering the full network stack rather than a single specialism
 * Methodology/Protocols: Solid working knowledge of VLANs, 802.1Q trunking, STP/RSTP/MST, LACP/port-channels, OSPF, EIGRP, BGP, plus practical firewall configuration and troubleshooting, ideally on Palo Alto (NAT, security policy, VPN, HA)
 * Soft Skills: Self-motivated and comfortable working independently and within a small team; strong troubleshooting instincts, clear communicator, commercially aware when engaging with customers, * Multicast experience (SSM/ASM) in Layer 2/3 environments
 * Broadcast or media-over-IP background
 * Cisco IP Fabric for Media (IPFM) experience
 * Net Insight Nimbra experience
 * CCNP certification (or working towards)

## Description

* Manage and operate core network architecture supporting carrier-grade, multi-site infrastructure carrying live broadcast, internet and private customer traffic
 * Lead and support a major IP migration project, moving legacy broadcast technology onto current-generation infrastructure
 * Manage, operate and improve the multisite network for multicast TV transport as well as the internal campus network
 * Design and support customer networking solutions across multiple sites, including remote access
 * Own network security and firewall configuration in a fast-changing environment
 * Split time roughly 50/50 between project work and BAU: ticket resolution, solution specification and materials/billing documentation, shared across the wider team
 * Create and maintain accurate network documentation, including complex diagrams
 * Manage and operate the organisation's network monitoring systems (NMS)


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