DV Cleared Senior Software EngineerAldermaston - Onsite12-month contract Outside IR35Are you a DV cleared Software Engineer who can take full ownership of software delivery on site?Do you enjoy building Siemens PLC solutions from scratch in secure, regulated environments?Looking for a long-term contract with a strong on-site engineering focus?What''s in it for you 650 to 750 per day Outside IR35 12-month contract 4-5 days onsite per week Work on high-security, technically challenging projectsWhat will you be doing? Designing, developing and programming Siemens PLC systems from scratch Leading all software activities on an assigned project Configuring Siemens PLCs, HMIs and associated networks Producing on-site test documentation and supporting FATs and SATs Carrying out on-site testing and commissioning of PLC systems Acting as the technical interface with the client during delivery Providing technical leadership, mentoring and support to other engineers Ensuring software delivery meets programme, budget and quality requirementsWhere you''ll be doing itYou''ll be based on site in Aldermaston, working within a highly secure defence environment on mission-critical control system projects.What you''ll need Active DV clearance (essential) Strong experience programming Siemens PLCs from scratch Background in on-site commissioning and testing of PLC systems Experience working in secure or regulated environments Ability to technically lead software activities and support junior engi