Java, Android development, Kotlin, Security standards, Performance optimization, Offline payment principles, SDK integration, POS payment scenarios

Java, MVVM, Mvp, Json, Kotlin, Git, Android Studio, Bitbucket, Android SDK, Agile, Scrum, Restful Apis, Clean Architecture

Java, Javascript, CSS, Ibm Mq, Android SDK, Kotlin, HTML

Java, multi-threading, Rxjava, MVVM, Mvp, ViewModel, Kotlin, Retrofit, Glide, Jetpack components, LiveData, multi-Gradle projects, Android UI development, Hilt, performance optimization, Room, Android memory management

Profiler, Retrofit, Java, Flutter, Kotlin, ViewModel, MVVM, Websocket, UI rendering, Perfetto, low-latency, real-time data, Jetpack, memory layout, performance optimization, LeakCanary, Compose, OkHttp, high-concurrency, refactoring, component lifecycle, modular app structure, battery cold start, MVI, Systrace, large-app architecture, crypto exchange background, Room, blockchain knowledge, Android system architecture, OOP principles

Android SDK, Networking, Java, MVVM, Mvp, multithreading, Kotlin, MCP Servers Tools, Claude Code Skills, MVI, performance optimization, LLM capabilities, AI-assisted development toolchains, Jetpack components, Git workflows

React Native, Flutter, Cordova, Xamarin, Java, Kotlin