Are you an experienced Telecoms Design Engineer with SISS and PAVA experience?Are you a Design CRE (or working towards CRE)?Salary: up to £70,000 or up to £500 per day, Outside IR35 Location: Doncaster or Leeds, 4 days per week minimum Contract length: 12 months Start: ASAPYou will be responsible for leading and delivering SISS design and assurance in line with Network Rail standards across a massive train station project, valued at circa £210m to Network Rail.This role will suit someone comfortable leading projects and teams, acting as technical authority and interfacing directly with clients and contractors.Essential requirements Strong UK rail SISS design experienceCRE accredited or actively working towards CRE (essential)Proven experience across CCTV, PAVA, CIS, access control and telecoms systemsSolid understanding of Network Rail standards and GRIP / PACE processesAble to work on site in Doncaster or Leeds 4 days per weekComfortable in a delivery-focused, non-remote role If you re a SISS professional looking for your next challenge, this role offers technical variety, flexibility and long-term career potential.Apply or email (url removed)