I am looking for an experienced PCB Designer/Hardware Engineer to design a custom power management board for a BLDC fan system with integrated battery backup. Key Functional Requirements: Battery System: 4S LiFePO4 (32140 cells, 3.2V nominal)... (Budget: ₹600 - ₹1500 INR, Jobs: Circuit Design, Electrical Engineering, Electronics, Embedded Systems, PCB Layout, Prototyping, Simulation)