Senior Network Engineer

Job Title: Senior Network Engineer / Network Data Administrator Location: Warwick, UK Mandatory Skill: Network Data Administration Work Type: Onsite / UK-based (with ad-hoc travel to client sites) Job Overview We are seeking an experienced Senior Network Engineer to support a major UK infrastructure modernisation programme. The role focuses on enhancing network reliability, security, and user experience across a large-scale enterprise environment. This initiative involves upgrading end-of-life network hardware, deploying advanced Wi-Fi solutions, and delivering high-speed connectivity services integrated with Cisco SD-WAN technologies. The programme also includes exploration and implementation of alternative connectivity solutions such as satellite and 5G technologies to support disaster recovery, rapid deployment, and enterprise expansion initiatives. A significant part of the role will involve conducting on-site wireless surveys and network design activities using tools such as Ekahau. Key Responsibilities * Lead and support the modernisation of enterprise UK network infrastructure. * Design, implement, and optimise Wireless LAN solutions across large-scale environments. * Conduct physical and desktop Wi-Fi surveys using Ekahau and RF design methodologies. * Support deployment of Cisco SD-WAN (Viptela) and related WAN connectivity solutions. * Design and maintain LAN switching environments including VLANs, STP, RSTP, MSTP, EtherChannel, and QoS configurations. * Configure and troubleshoot routing protocols including BGP and OSPF across enterprise WAN environments. * Support integration of alternative connectivity solutions including 5G and satellite-based networks. * Produce detailed network designs, implementation plans, and operational support documentation. * Engage with stakeholders across technical and business teams to ensure successful delivery of network solutions. Required Skills & Experience * Minimum Cisco CCNP certification (CCIE preferred) * Certified Wireless Networking Professional (CWNP) highly desirable * Strong experience with Wireless LAN technologies, including: * Cisco WLAN / Cisco ISE * Aruba WLAN / Aruba ClearPass * Experience with RF design and Wi-Fi survey tools (Ekahau) * Strong knowledge of Cisco SD-WAN (Viptela) * In-depth understanding of routing protocols (BGP, OSPF) * Strong experience in LAN switching technologies, including: * VLANs, STP, RSTP, MSTP * EtherChannel, switch stacking * QoS, segmentation, and redundancy * Experience with carrier WAN, internet services, and cloud networking services * Ability to create detailed technical documentation, designs, and operational support models * Strong stakeholder management and cross-functional coordination skills Desirable Experience * Private 5G networking solutions (e.g. Cradlepoint) * Experience with disaster recovery networking architectures * Large-scale enterprise network transformation programmes * Experience working in regulated or complex enterprise environments