Senior Cisco Network Engineer Location: City of London Company: Large global financial services organisation Salary: Up to £70,000 plus bonus and comprehensive benefits Working pattern: Hybrid (3 days per week in the London office) A leading financial services organisation is seeking an experienced Senior Cisco Network Engineer to join its growing technology team. This is a key role with responsibility for the design, delivery, and ongoing support of a global enterprise network, working in a complex, high-availability environment. You will play a pivotal role in modernising network infrastructure, driving technical improvements, and providing senior-level support across the organisation. Key Responsibilities Design, implement, and support large-scale enterprise networks Take ownership of network enhancements and infrastructure modernisation initiatives Provide technical leadership and guidance to other team members Deliver Level 3 network support and participate in an on-call rota Implement and support routing, switching, firewall, and SD-WAN solutions Integrate switches, routers, wireless controllers, SDN, load balancers, NAC servers, and cloud platforms Ensure network security, resilience, and high availability across global environments Skills and Experience Required Proven experience designing and implementing networks in a large user or enterprise environment Strong Cisco background (ideally CCNP or CCIE) In-depth knowledge of Layer 2 technologies (VL