Job Title: Hardware Engineer (Avionics and Embedded Systems)Location: Salisbury ( Hybrid-2 days a week in office)Clearance Requirement: UK SC Cleared or SC Eligible Role Overview We are an innovative Original Equipment Manufacturer (OEM) based in Wiltshire, specializing in advanced Uncrewed Aerial Systems (UAS). We are seeking a highly skilled Hardware Engineer to take ownership of the end-to-end design, multi-layer PCB layout, prototype bring-up, and environmental qualification of safety-critical flight control electronics, platform management computers, and sensor payload interfaces for fixed-wing, VTOL, and gas-turbine platforms.Key ResponsibilitiesSchematic and PCB Design: Create multi-layer rigid and flex-rigid PCBs using Altium Designer for flight control computers, power distribution units (PDUs), and sensor interfaces.Avionics Bus Integration: Implement robust, low-latency communication bus architectures, including CAN / CAN FD, RS422, RS485, Ethernet, SPI, and I2C.Power Electronics: Design low-voltage DC-DC converters, switching regulators, and power distribution circuitry optimized for weight, thermal dissipation, and efficiency.Board Bring-Up and Verification: Lead hands-on prototype bring-up, fault isolation, and hardware-in-the-loop (HITL) bench testing using standard laboratory equipment.Environmental and EMC Qualification: Design for harsh operating environments, ensuring compliance with RTCA DO-160G, DEF-STAN 59-411, and MIL-STD-810.Design Assurance: Produce ..... full job details .....