Firmware Development:Develop, test, and optimize firmware for ESP32, STM32, Nuvoton, or similar microcontrollers.Implement device drivers for sensors (pH, Temperature, DO, etc.) and actuators.Work with RTOS (FreeRTOS, Zephyr, or similar) for real-time embedded applications.Develop power-efficient firmware for battery-operated IoT devices.Hardware & Circuit Design:Design, prototype, and debug PCB layouts (KiCad, Altium, or Eagle).Work with analog and digital sensors, power circuits, and communication interfaces (I2C, SPI, UART, CAN, RS485).IoT Connectivity & Protocols:Integrate Wi-Fi, Bluetooth (BLE), LoRa, NB-IoT, LTE-M for wireless communication.Implement MQTT, CoAP, HTTP, WebSockets for cloud connectivity.Work with AWS IoT, Azure IoT, or Google Cloud IoT for data integration.System Optimization & Security:Optimize memory usage, power consumption, and real-time performance.Implement TLS/SSL encryption, Secure Boot, and OTA firmware updates.Testing & Debugging:Use JTAG, SWD, logic analyzers, oscilloscopes, and simulators for debugging.Conduct hardware testing, validation, and certification.Collaboration & Documentation:Work closely with hardware, software, and data science teams.Document firmware architecture, code, and system specifications.