We are seeking experienced Systems Engineers to provide technical leadership in the design and delivery of innovative defence solutions across Position, Navigation and Timing (PNT), RF communications, and sensor systems. This role offers the opportunity to take ownership of system designs for cutting-edge electronics used in Defence and Electronic Warfare (EW) applications. You will act as a System Design Authority (SDA) on complex projects, leading technical decision-making across the full engineering lifecycle. The position suits individuals who thrive in technically challenging environments, can assess trade-offs quickly, and communicate effectively with both customers and internal stakeholders. Key Responsibilities Develop a deep understanding of existing Electronic Warfare system products and future development roadmaps Act as System Design Authority on assigned projects, from early R&D concept through to product delivery and in-service support Provide systems engineering leadership to multidisciplinary teams delivering: Science and technology research Solution and product development Equipment trials Business development activities, including competitive bids Strengthen customer relationships by providing expert technical input to shape solutions and delivery programmes Provide technical assurance across internal projects and, where required, on behalf of customers Work closely with project management tea...