We are looking for a Senior Network Design Engineer / Team Leader to provide technical leadership and deliver network architecture and telecommunications solutions across complex railway and safety-critical projects. The role will focus on the design and delivery of data networks supporting station systems, SCADA, signalling and backbone communications, working closely with customers, project teams, systems engineers and delivery partners. Key Responsibilities Lead the technical delivery of network architectures and designs across railway projects. Design and review LAN/WAN, industrial Ethernet, SCADA and station system networks, including CCTV, voice and passenger information systems. Produce network architecture documents, diagrams, IP addressing/subnetting plans, cable schedules, diversity plans and configurations. Develop secure network solutions, including firewalls, DMZs, IPsec, authentication and network security architectures. Gather customer requirements...