We are seeking a highly experienced Senior Systems Design Engineer, based in Brackley who has deep expertise in mixed-signal hardware design and embedded C programming. Our client is a leading designer and manufacturer specialising in prototype development and custom PCB assembly. This is a multidisciplinary role ideal for a senior engineer who thrives in a hands-on technical environment, integrating analogue and digital circuit design with real-time embedded software to deliver robust, scalable solutions. Key Responsibilities for the Senior Systems Design Engineer job based in Brackley; Lead the architecture, design, and development of mixed-signal electronic systems (analogue/digital interfaces, microcontrollers, sensors, power management). Develop and debug embedded software in C for real-time control, data acquisition, and communication tasks. Design PCBs using industry-standard tools (e.G., Altium, KiCad, OrCAD), including schematic capture, layout reviews, and BOM generation. Perform system-level integration, verification, and validation across hardware and software components. Collaborate with cross-functional teams (mechanical, firmware, software, test) to define requirements and ensure seamless system integration. Conduct design reviews, FMEA, and documentation for regulatory and manufacturing compliance (e.G., CE, EMC). Skills & Experience needed for the Seni...