I love to build complex solutions for IoT and Mobile working as a freelancer.

I use Qt for creating multi-platform mobile apps - can build iOS, Android, MacOS and Linux builds from single sources.

For backend I use AWS or custom backend on Linux + RoR.

Have experience with development for Android in Java.

Last time I am focused on Espressif ESP32 SoC firmware development + Qt + AWS. So, main languages for me now are C++, C, JavaScript.