Android developer in a startup company TODO

Development and maintenance of Grindr app, which is available on Google Play with 5M DAU. * Functionality in chat room -- Message rendering with custom view -- Message loading, caching, paging -- Jumping (scrolling) among paged messages * Message searching using SQLite Full-text-search (FTS) and text tokenization, especially on a large database file (>500MB) *Refactor: -- Replace outdating ViewPager with ViewPager2 (with built-in right-to-left layout) -- Convert RxJava to coroutine *Bugfix: -- Bugs about serialization --- Serialize/deserialize the singleton of a sealed class --- NotSerializableException when serializing a closure -- Initialization for WorkManager *Performance: -- Improve DAO query time by 90% (100ms → 10ms) -- Minimize overhead of thread-switching when using coroutine by 95% (400ms → 20ms) === Laid off because of the transition of management rights, all new-employed RDs are fired.

Development and maintenance of Asus in-house app: AsusGallery. - Develop timeline page with zoomable layout: pure OpenGL, no any Android View (https://youtu.be/WBTgdrz7i4s) - Integrate SAF(Storage Access Framework) into non-SAF code architecture (Including writing utilities classes and sharing with another in-house app) - Improve and refactor interactions with SQLite (writing large structured data into databases, getting 5 times improvement: 800s --> 140s) - Improve app cold-start launch time and speed of switching between pages - Solve various bugs -- Removing Thread.sleep() from UI thread -- ANR related to GLSurfaceView and MediaCodec -- Deadlock resulting from nested synchronized blocks - Cooperate with UI designer team (including writing an utility class and sharing with colleagues) * My own utilities module (for debugging Android, implemented with Kotlin) https://github.com/adherencegoo/XDDLib