java , kotlin , ооp , android studio , android sdk и adt plugin , proguard , gradle , permissions , android libraryes building ( aar , jar ) , apk , aar , jar reverse engineering , mvp ( moxy ) , jetpack compose , android ddms , adb commands , recyclerview , retrofit , butter knife , dugger2 , coordinatorlayout , okhttp , livedata , picasso , dexter , glide , git , svn , jira , realm , eventbus , firebase , , android services , google play publishing , xml based and dynamic ui , fcm , activity , fragments , encryption , layouts , custom views , rest , broadcast receivers , intents and filters , resources , push notification , websocket , sockets , file i/o , serialize , tts ( text - to - speech synthesis ) , xml , json , javafx , swing , collections , threads , multithreading , bluetooth , telephone , mdm , device owner , policies , vpn , anr resolving , embedded c etc embedded programming experience with pic , stm and other microcontrollers ( c programming language ) experience in writing desktop applications ( javafx and swing on java