Design and develop miniaturized analog and mixed-signal PCBs for wearable biosignal recording and electrical-stimulation medical devices. Responsibilities include schematic capture, PCB layout, component selection, power and RF design, high-voltage circuitry, board bring-up, embedded C firmware, test automation, laboratory debugging, design verification, manufacturing support, documentation, and compliance activities. The engineer will collaborate with firmware, mechanical, textile, systems, and clinical teams throughout product development.