Senior PCB Design Engineer (Multi-Layer / High-Speed) Industry: Defence, Hardware Location: Berkshire area Job Type: Full Time, Permanent Join a leading defence technology team delivering secure, high-performance electronics for critical applications across cyber, aerospace, and national security. We are looking for an experienced PCB Design Engineer to take ownership of complex, multi-layer PCB design and layout across a range of advanced programmes. You will play a key role in delivering high-reliability PCB designs (4–20 layers) for cutting-edge systems, working closely with electronics, mechanical, and manufacturing teams. Key Responsibilities * Design and layout complex multi-layer PCBs (4–20 layers) including rigid, flex and rigid-flex designs * Deliver high-speed, RF, analogue, digital and power PCB layouts to demanding performance standards * Apply best practice in PCB design for signal integrity, EMC, and manufacturability (DFM/DFT) * Define stack-ups, controlled impedance routing, and via structures (blind/buried) * Collaborate with hardware engineers to ensure PCB design meets electrical and physical requirements * Work with manufacturers to ensure PCB designs are production-ready and optimised * Incorporate test strategies into PCB layouts without compromising performance * Maintain and develop PCB CAD libraries (symbols & footprints) * Support design reviews and contribute to continuous improvement in PCB design processes and tools Required Skills & Experience * Proven experience in PCB design, layout and routing of complex electronic assemblies * Strong track record delivering multi-layer, high-density PCB designs * Experience designing high-speed, RF, analogue and power PCBs * Proficiency with industry-standard PCB design tools (e.g. Altium, PADS) * Solid understanding of signal integrity, EMC, and PCB layout best practices * Experience working with DFM/DFT and PCB manufacturing processes Security Requirements Due to the nature of this role, you must be eligible for UK Security Clearance (SC/DV)