• Developed a private social media app with Clean Architecture, MVVM, SOLID principles, and design patterns using Kotlin and Java, ensuring maintainability, scalability, and high performance.• Utilized modern Android technologies (Coroutines, Flows, Jetpack Compose, Hilt) to enhance app performance and user experience, driving efficient development and high-quality results.• Streamlined CI/CD pipeline by creating GitHub Actions for automated testing, linting, and release builds. Managed the release process from internal to production, including version updates, beta testing, and staged rollouts, with Crashlytics monitoring.• Conducted UI, Integration, and Unit testing with Test-Driven Development (TDD) to prevent bugs and crashes. Used Crashlytics and Firebase for monitoring and resolving production issues, significantly enhancing app stability and user satisfaction.• Integrated SQLDelight and Firebase Realtime Database for efficient data management. Employed WebSockets for real-time updates and live queries for reactive UI updates, ensuring synchronized data and an improved user experience.• Delivered high-priority features on time within an Agile Scrum environment. Conducted code reviews and used feedback to ensure quality and foster a collaborative team.• Mentored junior developers, fostering their growth and encouraging continuous learning, which enhanced overall team performance.

• Designed and developed 4 mobile apps with Java and Kotlin, starting with MVP and transitioning to MVVM and Clean Architecture for improved modularity and maintainability throughout the SDLC.• Utilized Kotlin, Coroutines, Jetpack Components (including ViewModel, LiveData, and Navigation), RxJava, Retrofit, Dagger 2, Firebase, RecyclerView, Data Binding, and Realm to create robust and maintainable applications.• Conducted thorough unit, integration, and UI testing using JUnit, Espresso, and Mockito to ensure high-quality and reliable software, enhancing app stability and user satisfaction.• Applied data privacy and security measures using encryption methods like RSA, AES, MD5, SHA2, and TLS/SSL to ensure secure and compliant app development.• Developed a real-time communication library using XMPP and the Smack library, enhancing messaging efficiency and user experience in integrated applications.