ESP32-S3 + SIM7600 + 40 Motor Controller PCB Design (4 Layer)

We are developing a smart vending machine controller for PhysiNovaLab Pvt Ltd. The controller will manage multiple vending motors, sensors, and cellular connectivity using an ESP32-S3-based architecture. We are looking for an experienced hardware engineer to create production-ready schematics and PCB layout suitable for manufacturing. ESP32-S3-WROOM-1 SIM7600G-H Cellular Module MCP23017 I/O Expanders 24V DC Power System Motor Driver Circuits Sensor Interfaces 4-Layer PCB EasyEDA Pro Preferred. Deliverables: • Complete Schematic Design • PCB Layout • EasyEDA Source Files • Gerber Files • BOM • Pick & Place Files (CPL) • PDF Documentation Preferred Experience: • ESP32 Hardware Design • SIM7600 / SIM800 Design • Industrial IoT Products • Motor Driver Circuits • 4-Layer PCB Design • JLCPCB Assembly Experience This is a commercial product, not a hobby project. Future revisions and additional hardware projects may follow successful completion.