Are you a Security Systems Engineer with experience managing design, technical interfaces and contractor deliverables? Do you want to play a key role on one of the biggest and most technically challenging security systems programmes in the UK?Salary:Birmingham: £65,853.60 to £77,474.40London: £71,121.60 to £83,672.40Location: Birmingham or London, with hybrid working (3 days per week in the office, 2 from home)Closing date: 1st JulyThis is an opportunity to join the Rail Systems Engineering team working on HS2 as a Senior Security Systems Engineer. Acting as the technical subject matter expert for physical and electronic security systems, you will provide engineering assurance and technical leadership across multiple contractors delivering Europe''s largest infrastructure project.This is not a site-based delivery role. Instead, you''ll work at the heart of the design and engineering process, reviewing contractor deliverables, managing technical interfaces, and helping resolve complex issues between packages. You will advise project managers and commercial teams on the impact of technical changes, ensuring systems are integrated safely and effectively.Working across stations, depots and railway infrastructure packages, you''ll be involved with Access Control, CCTV, Intruder Detection Systems, Video Management Systems and Physical Security Information Management systems, helping shape the future operational railway.Essential requirements Experience with physical and electronic