Good day,
I have experience in IoT, Web and Cloud systems like as Wine Chiller (Raspberry Pi Zero W) with IBM Watson integration, electrocardiograph (ESP32) with AWS integration, weather station (ESP866) with own API integration and many others.
Also I have experience with ESP8266, Arduino, SonOFF, Wemos integration to AWS via MQTT, with custom firmware and Tasmota, Mongoose third-party firmware.
With best regards,
Ivan Medvedev.