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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Network Engineer - **Company:** BUUK Infrastructure - **Location:** Cardiff, UK - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Border Gateway Protocol, Computer Networks, Dynamic Host Configuration Protocol, Ethernet, Networking Hardware, Multi-protocol Systems, OSI Models, Network Troubleshooting, Routing, Open Shortest Path First (OSPF), Simple Network Management Protocols, Transmission Control Protocol (TCP), Virtual Router Redundancy Protocols, Computer Network Technologies, System Availability, Information Technology, Software Coding, PPPoE - **Published:** August 28, 2026 - **Apply:** https://www.careerjet.co.uk/job/gb250f49ab0a243bbdf66523b2df56b030/eaa ## About the Role Degree in telecommunications or computer science, or equivalent experience. Extensive experience in Network Engineering roles. Experience/Knowledge Proficiency in routing and switching technologies. Extensive experience with IP, Ethernet, and GPON networking technologies. In-depth knowledge of the OSI Layer 7 model. Proficiency in IP, TCP, UDP, PPPoE, OSPF, BGP, SNMP, DHCP, VRRP, 802.11g/n/ac, Ethernet. Expertise in MPLS, t-LDP, RSVP-TE. Abilities/Skills Excellent written and verbal communication skills. To be thorough and pay attention to detail. The ability to work well with others leading a focus group when needed. Ability to work independently. To be flexible and open to change. The ability to accept feedback and work well under pressure. Desirable Nokia SRA. Experience with GPON/FTTH technology, experience in a telecom environment, knowledge of SIP. Incident Management. Nokia SRoS/NSP/NFMP and coding skills (especially php and velocity script). ## Description At BUUK Infrastructure, our vision is to be the leading utility partner to accelerate the UK towards net zero for all our customers. Our group of companies has been the major drive for change and innovation over 30 years. We provide a supportive environment that is committed to enabling our people to be the best - ensuring they feel proud to be themselves and part of BUUK Infrastructure. We are looking for Principal Network Engineer who would like to help us reach our mission to "earn customer loyalty and drive business growth by providing consistently excellent service". Purpose of this role As our Principal Network Engineer, you will be providing subject matter engineering expertise for OFNL's fully fibre network components, with a specific focus on Nokia core routing and Nokia and Adtran access technologies. You will be responsible for the full lifecycle of active network components, ensuring solutions are delivered at pace in a scalable, supportable, and secure manner. Your responsible for developing and designing the active end-to-end network, ensuring high availability and maximum performance. Your key responsibilities are Lead the development of new broadband, data, and voice products. Design scalable network solutions to support growth and ensure high availability. Test, evaluate, and deploy new network hardware and software. Maintain and create documentation, including technical reports and training materials. Collaborate with internal and external suppliers. Investigate and resolve complex technical issues, including occasional site visits. Develop and deliver training material and knowledge transfer activities. Provide technical leadership and mentorship to developing engineers. Act as the primary technical escalation point for network issues. Plan and prioritize work effectively. Lead development projects and introduce new technologies. Work closely with operational teams. Work with minimal supervision and support. Take leadership in problem investigation. Be a self-starter, creative, and critical thinker with coding skills. Supervise developing team members and act as the technical contact point for daily issues. 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