Waheed K.

🔥 Top Rated — Among Top 10% Mobile App Developers on Upwork ⏱ 8+ years of professional Android development experience ✅ 15+ apps delivered — solo-shipped and client-delivered on Google Play ✅ Expert in Kotlin, Jetpack Compose, Clean Architecture & MVVM ✅ Proven in production: payments, VOIP, real-time, CI/CD, multi-module Hi there! I'm a Senior Native Android Developer with 8+ years of hands-on production experience building high-performance mobile applications for startups, agencies, and international product companies. I specialize in Kotlin and Jetpack Compose, architecting scalable MVVM and Clean Architecture codebases, integrating complex third-party SDKs, and shipping apps end-to-end to the Google Play Store. I work as a hands-on technical partner — from the first architecture decision to CI/CD pipeline setup, Play Store release, and long-term maintenance. I genuinely love building Android apps that solve real problems and survive production. That drive has led me to solo-ship complete consumer apps — handling everything from architecture and UI to AdMob, Firebase, ASO, and automated deployment pipelines — while simultaneously delivering enterprise-grade client projects at an agency level. I hold a Top Rated badge on Upwork with a 100% Job Success Score. Accomplishments: 🏆 Solo-built and shipped a Habit Tracker app entirely from scratch — architecture, Jetpack Compose UI, dual-channel notifications, AdMob UMP consent, Firebase Analytics & Crashlytics, CI/CD pipeline, and full Play Store listing with ASO 🏆 Delivered a full retail pawn and e-commerce Android app at M3N Technologies (multi-module, Jetpack Compose, Clover payments, Google Maps, Paging 3, Firebase) — also maintaining the iOS version in Swift and RxSwift for full feature parity 🏆 Built and shipped a global VOIP calling app live on Play Store — integrating PJSIP, Stripe, and PayPal with full in-app purchase and calling bundle flows 🏆 Delivered a UN NGO tuberculosis patient tracking app deployed nationwide across Pakistan — using MVVM, WorkManager, Room, and FCM 🏆 Built a global remote collaboration platform with fund escrow, AI talent matching, e-contracts, and milestone tracking — using SocketIO, Hilt, Firebase, and Alipay/PayPal SDKs If you have read this far, I appreciate you taking the time to learn about me. It has been a rewarding journey building production Android apps across health, logistics, fintech, retail, VOIP, and social domains — each project making me a sharper engineer and a better technical partner for my clients. Android Development: Kotlin | Jetpack Compose | MVVM | Clean Architecture | MVI | Android SDK | Hilt | Koin | Room | DataStore | Coroutines | Flow | Retrofit | GraphQL | Paging 3 | Firebase | AdMob | Google Play Billing | WorkManager | Material Design 3 | Multi-module Architecture | CI/CD | Google Maps | In-App Purchases | Push Notifications | Payment Gateway Integration | Java | Swift | iOS Maintenance Tech stack: - UI: Jetpack Compose, XML (legacy), Material Design 3 - Architecture: MVVM, MVI, Clean Architecture, UDF, Repository Pattern - Async: Coroutines, Flow, RxJava, LiveData - Dependency Injection: Hilt, Koin - Networking: Retrofit, GraphQL, REST APIs, SocketIO, SignalR, RSocket - Database: Room, SQLite, Realm, DataStore - Firebase: Analytics, Crashlytics, Remote Config, FCM, Performance Monitoring - Payments: Stripe, PayPal, Google Play Billing, Clover, Alipay - Other SDKs: Identity Verification SDK, DocuSign, Google Maps, AdMob, Paging 3, PJSIP - iOS (secondary): Swift, UIKit, RxSwift, Alamofire, Realm - Build & DevOps: Gradle, Github Actions, Play Console - AI Tools: Claude, Cursor