Firebase Cloud Messaging (FCM), MVVM, Kotlin, Retrofit, Rest Apis, Azure, Android Keystore, Android Studio Profiler, Clean Architecture, Azure DevOps Pipelines, Certificate pinning, OkHttp, Root detection, WebSockets, OAuth 2.0, Jetpack Compose, Runtime integrity protections, OIDC

state management , C#, Objective-c, PostgreSQL, Typescript, MySQL, Flutter, Python, AWS, Java, Node.js, Kotlin, Firebase, Google Cloud, Figma, React Native, MongoDB, Swift, Azure, Go, Offline-first capabilities, CI/CD pipelines, GraphQL APIs, Mobile system design