Bilal N.
Android App Developer | Kotlin, Java, Flutter, Dart
🌟 About Me Hi, I am Bilal Nasir, a Top Rated Android Developer on Upwork with a 100% Job Success Score and 5 years of experience building, improving, and maintaining high-quality mobile applications. I specialize in Native Android Development using Kotlin and Java, along with Flutter Development using Dart to build cross-platform mobile applications. Whether you need a new app built from scratch, improvements to an existing application, complex API integrations, bug fixes, or help publishing your app on Google Play, I can help turn your ideas into reliable, scalable, and user-friendly products. My focus is on clean code, modern architecture, smooth performance, and maintainable applications that deliver a great user experience. 💡 My Services & Technical Expertise ✅ Native Android Development: Kotlin, Java, Android Studio, Android SDK ✅ Flutter Development: Flutter, Dart, Cross-Platform Mobile Apps, Responsive UI ✅ Modern UI Development: Jetpack Compose, Material Design 3, Flutter Widgets ✅ App Architecture: MVVM, Clean Architecture, Repository Pattern, Dependency Injection with Hilt ✅ API & Backend Integration: REST APIs, Retrofit, Kotlin Coroutines, JSON, Flask and third-party services ✅ Local Database & Storage: Room Database, SQLite, DataStore, Offline Data Management ✅ Firebase Integration: Authentication, Cloud Firestore, FCM Push Notifications, Analytics, Crashlytics, Remote Config ✅ App Monetization: Google AdMob, Banner Ads, Interstitial Ads, Native Ads, App Open Ads, In-App Purchases and Billing ✅ AI Integration: AI APIs, Image Generation Services, OCR and ML Kit integrations ✅ Google Play Console: App Publishing, Release Management, Policy Compliance Support, Updates and Maintenance ✅ App Maintenance & Optimization: Bug Fixing, Crash Resolution, Performance Improvements, Refactoring and Existing App Enhancements I aim to deliver more than just working code. Every project receives attention to code quality, performance, reliability, and long-term maintainability. 📱 My Published Apps & Portfolio I have worked on a variety of real-world mobile applications across different categories, including several apps with over one million downloads. These projects demonstrate my experience building, integrating, monetizing, and maintaining applications used by real users. 🌟 Photo Editor / Filter | 1M+ Downloads A feature-rich photo editing application with real-time filters, visual effects, and beautification tools, designed for smooth image processing and an intuitive user experience. 🌟 Camera Scan – Languages Translator | 1M+ Downloads An OCR and translation application that extracts text from images and translates it into multiple languages, with voice and speech support. 🌟 Flight Tracker – Flight Radar | 500K+ Downloads A real-time flight tracking application featuring flight status, route maps, airport information, and advanced API integrations. 🌟 Maps & GPS App | 1M+ Downloads A location-based application featuring navigation, route tracking, GPS functionality, traffic information, and nearby place discovery. 🌟 PDF Reader – All PDF Viewer | 100K+ Downloads A lightweight document management application for opening, viewing, browsing, and managing PDF files with a smooth user experience. 🌟 AI Haircut | 500+ Downloads An AI-powered hairstyle transformation application that generates haircut previews from user-uploaded photos through AI service integration. 🌟 Speed Cameras Detector | 500K+ Downloads A GPS-based driving assistant that alerts users to nearby speed cameras and speed limits using location tracking and background services. 🌟 Qibla Compass – Muslim Prayers Alert | 100K+ Downloads A utility application featuring Qibla direction, compass functionality, prayer times, and daily notifications. 🌟 History Calendar | On This Day A historical calendar application that helps users explore notable events, famous births, deaths, and public holidays for any date, with optional daily highlights. 🌟 Zoota – Cricket Analysis A cricket analysis application that uses video-based tracking to measure bowling speed, analyze ball trajectories, and review line, length, swing, bounce, and performance statistics. Each project reflects my commitment to developing practical, reliable, and user-focused mobile applications. 🚀 Why Work With Me? ✅ Top Rated Freelancer on Upwork with a 100% Job Success Score ✅ 5 Years of Professional Experience in mobile application development with strong expertise in Native Kotlin and Java ✅ Flutter and Dart skills for cross-platform mobile development ✅ Experience with published and monetized applications, including apps with 1M+ downloads ✅ Clean, scalable architecture and performance-focused development ✅ Clear communication, realistic timelines, and a professional approach ✅ Support for app publishing, maintenance, troubleshooting, and ongoing improvements 🤝 Let’s discuss your project and turn your idea into a high-quality mobile application.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $4.3k
Billed in all: $12,483$12k
$851 in the last 6 months
Across 6 contracts
Across 14 contracts
Earnings, last 30 days
Skill rankings: Top 8% in Retrofit
Ranked by MRR among everyone on Upwork with the skill.
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