Senior Network Design Engineer (Rail Communications) York (On-Site) Inside IR35 Contract Major UK Rail Infrastructure Programmes We are seeking a Senior Network Design Engineer to support the delivery of secure telecoms, operational technology and SCADA networks across major rail projects. You will help turn concepts and high-level designs into practical, deliverable solutions. This is a hands-on technical role, not a team leadership position. Key Responsibilities Design and review network architectures, IP addressing, subnetting, and configurations Deliver solutions for CCTV, Voice, SISS, SCADA and backbone communications networks . Develop secure operational data networks and cyber security solutions. Produce technical documentation and test specifications. Support integration, testing and onsite implementation activities. Gather client requirements and contribute to technical proposals. Ensure designs meet rail industry safety, security and quality...