Layer 3 Network Engineer (Network Assurance Lead) - Telecommunications

Are you looking for an exciting new opportunity? 

Join a UK-based fibre network provider committed to making high-speed broadband accessible to everyone, both in cities and rural communities. Headquartered in the North West of England, the organisation focuses on delivering fast, reliable and affordable full-fibre connectivity designed to stand the test of time. Working in partnership with Internet Service Providers, the organisation plays a key role in optimising the UK’s fibre network, improving rollout speed, reducing costs, and enhancing the overall customer experience.  Built on a collaborative culture, the company encourages its people, partners and suppliers to work together towards a shared purpose, valuing fresh ideas, inclusivity and making a meaningful impact through its work.

If you would like to learn more about this opportunity, feel free to reach out and apply today!

Responsibilities:

• Investigate complex end-to-end FTTP subscriber faults, including session drops, stale sessions, and re-authentication behaviour.
• Analyse DHCP session establishment, Radius authentication flows, and lease failures.
• Validate subscriber states using third-party BNG session tools and ensure VLAN tagging and access alignment.
• Diagnose IP addressing, allocation issues, and MTU/fragmentation-related faults.
• Perform WAN/LAN packet capture analysis and deep-dive into CPE routing, NAT, and firewall behaviour.
• Validate ACS / TR-069 provisioning integrity and identify firmware-related behavioural faults.
• Diagnose Wi-Fi performance issues, including RSSI, airtime utilization, and interference.
• Identify gaps in processes, tooling, and documentation to implement improvements that increase operational efficiency.

Skills/Must have:

• Strong broadband fault diagnostic experience, with a heavy preference for FTTP.
• Practical understanding of DHCP and Radius flows within an IPoE (DHCP-based) environment.
• Solid IP networking fundamentals and the ability to interpret session data, logs, and diagnostic outputs.
• Strong Wi-Fi troubleshooting knowledge and the ability to distinguish internal LAN issues from upstream faults.
• Ability to produce clear, structured technical escalations and present complex information to diverse audiences.

Benefits:

• Direct reporting to the Head of Networks with ownership of major fault escalations.
• Proactively build and maintain a technical knowledge base for the entire team.
• Work in a positive, evidence-driven team focused on operational excellence.

Desirable Certifications:

• Support for candidates with CCNA-level knowledge or those looking to utilize ACS / TR-069 expertise.

Salary:

• £45,000 Per Annum