Android Development (Programming Languages/Technical Skills/Technologies): • Programming languages: Java, Kotlin • Strong expertise in Android Framework, OOP and Reactive Programming • Architectural approaches: MVC, MVP, MVVM, SOLID and Clean Architecture principles • Dependencies Injection Frameworks: Dagger 2 • GPS and Push-notifications • In-app billing and Subscription API • Protocols: Bluetooth Low Energy, NFC, Google Nearby, TCP, UDP, HTTP, SMTP, Web socket • Amazon services: Amazon AWS S3 • Firebase products: Firebase Cloud Messaging, Firebase Cloud Functions, Firebase Cloud Firestore, Firebase Cloud Storage, Firebase Dynamic Links, Firebase Crashlytics • Google Services and APIs: Google Cloud Messaging, Google Maps API, Google Geolocation API, Google Geocoding API, Google Geofences API, Google Youtube API • Social networks integration: Facebook, Twitter, Google Plus, Telegram, VK • BaaS: Backedless, Parse • Continuous integration: Jenkins, bitrise.io • Version control: Git • Bug tracking systems and project management tools: fabric.io, Redmine, Asana, Trello, Jira