Developer of android applications in Kotlin and Java for more than 6 years in this field. Author of several training courses on YouTube on the "N.E.C.O" channel. The author of the application "Arduino Multimeter" with more than 500,000 installations, Smart Hunter more than 100,000 installations and others. Developer of projects on microcontrollers and Android devices. Currently, he is creating courses for beginner Android developers in the Kotlin programming language and the Android Studio development environment.