I'm an accomplished Senior Android Engineer with a strong technical foundation in both native Android (Kotlin, Java) and Flutter, delivering high-impact mobile solutions across E-commerce, FinTech, Telecommunications, and Enterprise sectors.

I bring proven experience across product-based, service-based, startup, outsourcing, and software house environments — adapting quickly to diverse engineering cultures and business goals.

• 🌟 Recognized for Excellence with 15+ LinkedIn recommendations — reflecting leadership, technical depth, and consistent impact in mobile engineering.

• 📱 Developed & launched 20+ mobile apps across E-commerce, FinTech, and Telecom — collectively reaching 10M+ downloads and 1M+ daily active users.

• 🧩 Architected scalable codebases adopted by product teams and CTOs as internal engineering standards.

• 🔁 Led the migration of two native Android apps to Flutter — improving scalability and maintainability, while mentoring senior engineers during refactor.

• 🚀 Boosted app performance and stability by resolving 80%+ of production bugs (Crashlytics), improving responsiveness through multi-threading & profiling.

• 🤝 Improved team delivery efficiency by 40% via agile collaboration and proactive sprint support with product teams.

• 🔄 Experienced in Agile, Scrum, Kanban, and Lean workflows — ensuring effective team processes and stakeholder alignment.

📱 Featured Projects

I’ve provided structured mentorship programs for aspiring and mid-level mobile developers, with a focus on both Android Native and cross-platform development.

• 📚 Guided 60+ mentees through structured Android and Flutter mentorship programs
• 💬 Delivered 1-on-1 coaching in architecture design, code reviews, and career growth
• 🧠 Helped engineers with interview preparation, real-world problem solving, and project reviews
• 🌱 Contributed to growing junior/mid-level devs into confident, capable seniors

💬 Mentorship isn’t just about teaching—it’s about empowering developers to unlock their potential, gain clarity in their journey, and grow with purpose.

• Programming Languages:

  • Kotlin, Java, Dart, C++ (Basics)

• Architecture & Design:

  • Clean Architecture, Modularization, Multi-Module Projects (Feature, Layered, Hybrid, Dynamic)
  • Architecture Patterns: MVI, MVVM, MVP, MVC
  • Design Principles: SOLID, DRY, KISS, Domain-Driven Design (DDD)
  • Design Patterns: Factory, Builder, Singleton, Observer

• Networking & API Security:

  • RESTful APIs, Retrofit, OkHttp, Firebase, Firestore, Realtime DB
  • OAuth 2.0, JWT Authentication, API Keys, Token Refresh, Interceptor Caching, Rate Limiting
  • Secure API Communication: TLS/SSL, HMAC, Certificate Pinning
  • JSON Parsing: Gson, Moshi, Kotlin Serialization

• Operating System Fundamentals:

  • Memory Management, Multithreading, Parallelism, Concurrency
  • Synchronous & Asynchronous Programming

• CI/CD & DevOps:

  • CI/CD Pipelines: GitHub Actions, Azure DevOps, GitLab CI/CD, Bitrise, Fastlane
  • Containerization: Docker, Kubernetes (Basics)
  • App Distribution: Play Store, TestFlight, Firebase App Distribution

• Version Control & Project Management:

  • Tools: Git, GitHub, GitLab, Bitbucket, Azure DevOps
  • Branching Strategies: GitFlow, GitHub Flow, GitLab Flow, Trunk-Based Development, Feature Branching, Release Flow, Forking Workflow

• Methodologies:

  • Agile: Scrum, Kanban, Lean, Waterfall
  • Task Management: Jira, Trello, Azure Boards
  • Practices: Code Reviews, Versioning, Stakeholder Communication

• Testing & Deployment:

  • Unit Testing: JUnit, Mockito
  • UI Testing: Espresso, UI Automator, Firebase Test Lab
  • Test Strategies: TDD, Code Coverage, Pre-launch Reports
  • App Deployment: Google Play Store, App Store Connect, TestFlight

• Core Android SDK & Jetpack Components:

  • ViewModel, LiveData, Navigation, Room, Paging, WorkManager, DataStore (Proto & Preferences), SavedStateHandle, Lifecycle

• UI Development:

  • ConstraintLayout, RecyclerView, Jetpack Compose, Fragment, DataBinding, ViewBinding, ActivityResult API, WindowManager

• System Services & Tools:

  • Foreground & Background Services, JobScheduler, Permissions, CameraX, Macrobenchmark, Benchmark, App Startup, Biometric, Emoji2, Multidex, Android KTX

• Firebase & Google Services:

  • Firebase Authentication (Google, Facebook, Phone, Email/Password)
  • Firebase Cloud Messaging (FCM), Remote Config (A/B Testing & Feature Flags)
  • Firestore, Realtime DB, Analytics (GA4 & Firebase), Google Maps, Places API, Google Play Services, ML Kit

• Security & Cryptography:

  • Code protection with DexGuard, ProGuard, R8
  • Secure storage via Android Keystore, EncryptedSharedPreferences
  • Encryption: AES, RSA, Hashing: SHA-256
  • Secure APIs: HMAC, TLS/SSL, Certificate Pinning, API Keys

• Background & Threading:

  • Kotlin Coroutines, RxJava, WorkManager, JobScheduler
  • ThreadPoolExecutor, Handlers, Loopers, Foreground & Background Services

• Storage & Databases:

  • Room, SQLite, Realm, SharedPreferences, Internal/External Storage

• Architecture & State Management:

  • Clean Architecture, Modularization, Multi-Module Projects
  • Architecture Patterns: MVVM, MVI
  • State Management: Provider, Riverpod, BLoC (basics)
  • Dependency Injection: GetIt for DI in Flutter

• Cross-Platform Development:

  • Building performant cross-platform mobile apps using Dart & Flutter for both Android and iOS
  • Platform channels for native integration

• Security & API Integration:

  • Secure API communication using HMAC, API Keys, TLS/SSL
  • RESTful API integration and JSON Parsing (with built-in libraries)
  • Secure authentication flows, OAuth, and data storage with Flutter-compatible encryption packages

• Performance & Optimization:

  • Lightweight UI building with StatelessWidgets, CustomPainter, RepaintBoundary, and Slivers
  • Optimizing layout, widget tree depth, and frame rendering for smooth UX

📌 These skills reflect a strong foundation in mobile engineering and software architecture — enabling me to deliver secure, scalable, and production-ready apps used by millions.

• Strong clean coding standards, code reviews, and best practices.
• Advocate for test-driven development, code quality, and long-term maintainability.
• Passion for mentoring and career coaching junior/mid-level developers.

• 📧 Email: mouaz.salah05@gmail.com
• 💼 LinkedIn: linkedin.com/in/mouaz-salah-876531167
• 🖥 GitHub: github.com/MouazSalah