Mobile
- Kotlin · Jetpack Compose · MVVM · Clean Architecture · Hilt/Dagger · Coroutines & Flow
- Jetpack Navigation · Room · DataStore · WorkManager · Paging 3 · ExoPlayer · Material Design 3
- Flutter (Dart) · SwiftUI/MVVM (Swift)
Front‑end
- React · Angular · Vaadin · HTML · CSS/SCSS · TypeScript · JavaScript
Back‑end & Cloud
- Spring Boot · Spring Security · Spring Data JPA · Spring Cloud GCP
- Ktor · RESTful API design · Docker & Docker‑Compose · GitHub Actions CI/CD
Databases & Messaging
- Cloud Firestore · Firebase Auth · Firebase Cloud Messaging · SQL (MySQL/PostgreSQL) · Hibernate · JPA
Testing & QA
- JUnit 5 · Espresso · MockK / Mockito · Compose UI Testing
Principles & Patterns
- SOLID · Clean Architecture · Repository Pattern
- LinkedIn: linkedin.com/in/Paul9834
- ✉️ : paul9834developer@gmail.com