Job Title: Senior Network Engineer Location: Remote (UK-Based) with Travel to Client Sites as Required Start Date: ASAP Salary: £60,000 – £78,000 Benefits The Opportunity An excellent opportunity has arisen for a highly skilled Senior Network Engineer with deep experience in enterprise and data centre networking, including Software-Defined Networking (SDN). This is a hands-on technical role with full project lifecycle ownership — from presales consultancy and design through to implementation, migration, and knowledge transfer. The successful candidate will be a confident self-starter, capable of working autonomously and engaging effectively with clients and stakeholders. This role suits someone looking to apply their expertise across a range of high-impact, enterprise-scale networking projects. Key Responsibilities * Lead technical presales discussions, audits, and discovery workshops. * Produce high- and low-level network designs for complex environments. * Deliver full project implementations including configuration, testing, and cutovers. * Perform migrations, acceptance testing, documentation, and knowledge transfer. * Act as a technical SME across a range of campus, WAN, and DC solutions. Essential Skills & Experience * Hands-on experience one or more of the following Cisco technologies: * Cisco ACI * Viptela/Catalyst SD-WAN, * Cisco SDA * Cisco Catalyst Centre (DNA Centre) for automation and assurance. * Cisco ISE, 802.1x, TrustSec, and zero-trust architectures. * Cisco Nexus 7000/9000, including EVPN VXLAN. * Solid grasp of core protocols such as BGP, OSPF, IS-IS, VXLAN, EVPN, and LISP. * Full project lifecycle experience across: * Audit and discovery * HLD/LLD production * Implementation and testing * Documentation and stakeholder handover Desirable Skills & Experience * Experience with: * Fortinet (FortiGate, FortiManager, FortiAnalyzer) * Cisco ASA, Firepower, FMC * Cisco Secure Access/SASE, DUO * Cisco UCS, Intersight, Nutanix * Arista (CloudVision, AVD, EVPN VXLAN) * Juniper MIST (wired/wireless, assurance) * Cloud networking in AWS/Azure * Relevant certifications (preferred but not mandatory): * CCIE/CCNP (Enterprise, DC, Security) * Cisco DevNet Associate/Professional