Embedded Firmware & PCB Engineer | STM32, ESP32, C/C++, KiCad

We are looking for an experienced Embedded Firmware Engineer to help improve an existing embedded hardware product and develop reliable firmware for the updated system. The PCB and current hardware design already exist, but we need an engineer who can review the design, identify any required hardware improvements, and develop/test the firmware to make the system fully functional and stable. The work may include: Reviewing the existing schematic and PCB design Recommending PCB or component-level improvements Developing embedded firmware in C/C++ Implementing peripheral and sensor interfaces Working with communication protocols such as UART, SPI, I2C, CAN, Wi-Fi, or BLE as required Hardware bring-up and firmware debugging Testing and resolving hardware/firmware integration issues Delivering clean, documented, working firmware Experience with STM32, ESP32, ARM-based MCUs, PCB debugging, and embedded hardware development is preferred. Please briefly describe a similar project where you worked with an existing PCB and developed or improved its firmware.