Erkan A.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I'm a Senior Mobile Engineer with 8+ years of experience building, modernizing, and releasing production Android applications. I specialize in Kotlin, Jetpack Compose, Kotlin Multiplatform (KMP), and modern Android architecture, with hands-on experience integrating AI-powered features and working with hardware-connected applications. I've worked on products across POS, loyalty, healthcare, BLE/NFC, Wear OS, and consumer mobile applications, from initial architecture to production releases and long-term maintenance. I've also built and published my own Android products, reaching 500K+ downloads, giving me practical experience not only developing applications but also shipping and maintaining products used by real users. 🛠️ What I Bring to Your Project ✅ Android & Mobile Development Kotlin, Java, Jetpack Compose, XML Kotlin Multiplatform (KMP) & Compose Multiplatform MVVM, MVI, Clean Architecture Coroutines, Flow, and modern Android development ✅ AI & Intelligent Features AI-powered mobile application features AI/ML integrations and ML Kit OCR and computer vision AI-assisted development workflows using modern tools ✅ Backend & Integrations REST APIs, Retrofit, Room, Firebase & Hilt BLE, NFC, Wear OS & external hardware Third-party SDK and service integrations ✅ Quality & Production JUnit, Espresso & Compose UI Testing Performance optimization and crash reduction Debugging and troubleshooting complex issues CI/CD, Google Play releases & production maintenance 💡 How I Can Help Whether you're starting a new application or improving an existing one, I can help you: 🚀 Build Android applications from scratch 🔧 Modernize legacy Java/XML projects with Kotlin and Jetpack Compose 🌐 Develop cross-platform features using Kotlin Multiplatform 🤖 Integrate AI capabilities into your mobile application 🐛 Fix difficult bugs, crashes, and performance issues 🔌 Integrate APIs, BLE/NFC, and external hardware 📱 Prepare and publish applications on Google Play 🔄 Maintain and continuously improve production applications I care about clean, maintainable code, thoughtful architecture, and reliable production software. I aim to take ownership of the development process, communicate clearly, and deliver solutions that are practical, scalable, and aligned with your product goals. If you're looking for an experienced mobile engineer who can help take your application from architecture to production, I'd be happy to discuss your project.