Usman A.

Android & App Store Development | Swift, Objective-C, Java/Kotlin

Profile Achievements:- ✓ 100% Job Success Rate ✓ Top Rated Profile ✓ Over 7 years in Android + App Development ✓ Cross Platform & Native App Development With 7 years of experience in mobile app development, I have gained strong expertise in developing high-performance native applications for iOS (Swift) and Android (Kotlin/Java). I develop scalable, and robust apps that meet businesses needs while ensuring optimal user experience. I've worked with startups and enterprise-grade solutions, delivering robust and future-proof applications. Key Expertise:- ✅ Native iOS Development (Swift, Objective-C) ✅ Native Android Development (Kotlin, Java) ✅ UI/UX Optimization (Custom components, animations, accessibility) ✅ Backend Integration (Firebase, REST APIs, GraphQL, AWS Lambda) ✅ Real-Time Features (WebSockets, push notifications, Firestore) ✅ Payment & E-Commerce Integration (Stripe, PayPal, Apple/Google Pay) ✅ App Security & Data Protection (OAuth, JWT, biometric authentication) ✅ App Performance Optimization (Lazy loading, caching, memory management) Big 2 Projects:- FinTech Banking App: (iOS & Android) - Developed for a leading financial institution, handling transactions for 500K+ users. - Integrated real-time payments, multi-layer authentication, AI-driven financial insights. - Achieved 99.9% uptime and 40% faster transaction processing. Health & Fitness Application: (Swift & Kotlin) - Built an AI-powered fitness tracking app with personalized workout recommendations. - Developed a custom motion tracking algorithm using device sensors (Gyroscope & Accelerometer). - Successfully scaled the app to 250K+ active users, driving engagement with gamification features. Development Approach & Workflow 📌 Agile Development: Sprint-based execution with CI/CD pipelines (Jenkins, GitHub Actions). 📌 UI/UX Design: Prototyping in Figma, Sketch, followed by performance tuning. 📌 API-First Development: Seamless backend connections with REST, GraphQL, Firebase. 📌 Automated Testing & Deployment: Unit/UI testing with XCUITest, Espresso, Firebase Test Lab. 📌 Post-Launch Support: Monitoring, updates, scalability improvements for future growth. Tech Stack & Tools: Technologies: Swift, Kotlin, Java, Firebase, GraphQL, REST APIs, AWS, Google Cloud. Dev Tools: Git, Bitbucket, Docker, Fastlane, Postman. Frameworks: Jetpack Compose, SwiftUI, Alamofire, Retrofit, RoomDB. Platforms: iOS, Android, App Store, Google Play, AWS, Azure. Let's connect for a quick exploratory chat to kickoff with your idea into mobile app! Keywords: Mobile App Developer, Android, iOS, React Native, Flutter, Kotlin, Swift, Dart, Cross-Platform Apps, Native Development, Firebase, Firestore, Realtime DB, Node.js, Express.js, REST API, GraphQL, OAuth, SQLite, MongoDB, Stripe, PayPal, Apple Pay, Google Pay, Git, GitHub, CI/CD, Google Play, App Store, Agile, Scrum, App Optimization, ASO, Crashlytics, BLE, Geolocation, AR, Video Streaming, WebSockets, Social API Integration, Google Cloud, AWS, Jetpack Compose, Hilt, Dagger, Coroutines, Room DB, MVVM, Clean Architecture, Unit Testing, SDK Integration.