Salary: £130,000 - 150,000 per year Requirements: 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 engineers Confident communicator, comfortable working directly with clients Degree-level qualification in a relevant engineering discipline (or equivalent experience) Responsibilities: 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 requirements Technologies: Support PLC Security More: We are a leading organization located in Aldermaston, working within a highly secure defence environment. We offer an engaging and technically challenging workplace where you can work on mission-critical control system projects. Our contract is designed to last for 12 months, compensating between £650 to £750 per day outside of IR35. We pride ourselves on our supportive team culture, encouraging professional growth and development. last updated 11 week of 2026