I am an android developer, I have a permanent job, but sometimes I can treat myself to a third-party project. I am developing my product, which is available at Google Play Market. My project consists of a back-end for a mobile application and the mobile application itself. I have extensive experience in developing mobile applications using the following technologies. On the server side: Mobile ?pp technologies: Android SDK Java/Kotlin RxJava RoomDB Retrofit Databinding/android jet pack