Senior Network Design Engineer

Salary: £61,000 - 101,000 per year

Requirements:

• Degree in Engineering, Telecommunications, Computer Science or a related discipline, or equivalent experience.
• Significant experience designing and delivering LAN/WAN and operational network infrastructure.
• Proven experience delivering IP/MPLS transmission networks in operational telecommunications environments.
• Experience in rail, safety-related, mission-critical or highly regulated environments.
• Strong knowledge of requirements management, design assurance and technical governance.
• Experience managing technical interfaces across multidisciplinary engineering teams.
• Strong understanding of network security, segmentation, resilience and access control.
• Experience producing network designs for signalling, SCADA, voice, SISS, CCTV, access control or backbone communications.
• Cisco CCNA-level knowledge or above, supported by substantial practical experience.
• Experience preparing documentation for IDC, IDR or equivalent formal assurance processes.
• Ability to manage technical comments, design changes, configuration management and acceptance evidence.
• Strong communication skills and ability to explain complex technical solutions to technical and non-technical stakeholders.
• Chartered Engineer status or working towards professional registration is advantageous.
• IRSE Licence or experience with railway engineering assurance processes is advantageous.
• UK railway operational telecommunications experience is advantageous.
• Experience on HS2, Network Rail or other major rail infrastructure programmes is advantageous.
• Knowledge of signalling, SCADA, radio, M&E, station systems and railway control environments is advantageous.
• Experience with SDN, network virtualisation, data-centre technologies or network automation is advantageous.
• Knowledge of cyber-security technologies such as next-generation firewalls, SIEM, IAM and OT security monitoring is advantageous.
• Experience planning design packages and preparing deliverables for formal client submissions is advantageous.

Responsibilities:

• Lead development of high- and low-level network architectures for secure, resilient operational environments.
• Provide technical leadership across network, operational telecommunications and security system design.
• Develop and assure IP/MPLS transmission networks in operational telecommunications environments.
• Support requirements management, compliance, traceability and technical assurance.
• Coordinate interfaces with signalling, SCADA, M&E, station systems, security, civil infrastructure and other rail systems.
• Produce architecture diagrams, system descriptions, technical specifications, design reports and interface documentation.
• Define IP addressing, subnetting, network segmentation, resilience and cyber-security strategies.
• Support IDC, IDR and equivalent formal design reviews.
• Respond to technical comments and manage design close-out through acceptance.
• Support system integration, testing, commissioning, migration and maintainability activities.
• Undertake Responsible Engineer or independent checking responsibilities where required.
• Apply CDM 2015 and Safe by Design principles throughout the design process.

Technologies:

• Backbone
• Cisco
• IAM
• Support
• LAN
• MPLS
• Network
• Security
• Architect

More:

We are offering a senior technical role on the HS2 rail infrastructure programme, based in the UK with hybrid working. The position supports the design and assurance of critical network, operational telecommunications and security systems for one of Europes largest infrastructure programmes. You will work across the design lifecycle, from system definition and architecture through assurance, integration, testing and acceptance, helping shape secure, resilient and maintainable solutions that interface with wider railway systems. The technical scope includes IP/MPLS and operational data networks, LAN/WAN, voice services, server and hypervisor environments, backbone communications, cybersecurity, signalling, SCADA, station systems, railway control environments and security systems. The opportunity offers technical ownership and multidisciplinary exposure on a high-profile, technically complex programme where resilience, security and reliability are critical.

last updated 41 week of 2026