Danh Cong T.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I'm an Android developer with 5+ years of experience in Android development. I'm focused on development of android applications and SDK. I worked on Java Android and Kotlin with many APIs: Google services (Firebase, In App Billing, admob, Maps), Facebook, Chartboost, OneSignal, Appcenter, etc. I also have working experience with Data binding, RxJava, RxAndroid, Retrofit (REST), GraphQL, maps, camera. I really like the UI development and backend code. Highlights in Android developments: - Java android / Kotlin - Android SDK - Retrofit - RxJava - Data binding - Room - Dagger 2 - Git, Svn - RESTful API - GraphQL - ...