I'm seeking an experienced PCB designer with expertise in Altium. The PCB will be used for signal processing and needs to be compact, measuring less than 5cm x 5cm. Key Requirements: - Multi-layer design: The PCB should be a multi-layer piece, so experience with this is crucial... (Budget: $30 - $250 USD, Jobs: CAD/CAM, Circuit Design, Electrical Engineering, Electronics, PCB Layout)