Neobanking & FinTech: Core Banking Flows, User Onboarding Journeys, Secure Payment Processing, Google Pay, MeaWallet (Tokenization), KYC/KYB Integrations (Onfido, Sumsub).Modern Android UI: Jetpack Compose (production development), Compose Navigation, CameraX, ExoPlayer, ViewBinding, Custom UI Components.Architecture & Scale: Clean Architecture (Presentation/Domain/Data), MVVM, Multi-module Architecture, Multi-Flavor Infrastructure (Gradle Product Flavors).Asynchronous & Native: Kotlin Coroutines, Kotlin Flow (reactive data pipelines), C++/JNI for secure native networking, Biometric Auth (Fingerprint/FaceID), Google ML Kit (Text/Face Recognition).App Quality & Performance: Crash Rate Reduction, Memory Leak Optimization, Profiling (Android Studio Profiler), CI/CD Pipeline Integration (GitHub/GitLab/Jenkins), Agile/Scrum (Jira/Slack), SQLite optimization.