Pinky A.

I build mobile apps that scale, retain users, and generate revenue not just apps that ship. I'm proud to be part of Toptal's Top 3% developer network, and one of the production apps I've worked on has surpassed **5M+ downloads**. I have hands-on experience in app monetization, performance optimization, Play Store/App Store releases, and building reliable mobile experiences at scale. I'm also an active member of the developer community with **5,449 Stack Overflow reputation** and **280+ answers**, where I enjoy helping developers solve real-world engineering challenges. With **10+ years of experience**, I've built mobile applications across **Android, Flutter, iOS, React Native, Kotlin Multiplatform (KMP), BLE, IoT, and POS solutions**. I've delivered banking applications, healthcare platforms, AI-powered products, wearable and connected-device solutions, POS and payment applications, video streaming platforms, chat systems, and enterprise applications used by thousands to millions of users. Beyond mobile development, I specialize in **Bluetooth Low Energy (BLE)** communication, wearable device integration, companion apps, IoT connectivity, firmware-to-mobile communication, real-time data synchronization, offline-first architectures, OTA firmware update workflows, secure device provisioning, and **POS terminal integration**, including payment workflows and peripheral device connectivity. ## WHAT I BUILD ✓ Android Apps (Kotlin, Java, Jetpack Compose) ✓ Flutter Apps ✓ iOS Apps (Swift, SwiftUI) ✓ React Native Apps ✓ Kotlin Multiplatform (KMP) ✓ BLE & IoT Applications ✓ Wearable & Connected Device Solutions ✓ POS & Payment Applications ✓ Companion Apps for Smart Devices ✓ AI-Powered Mobile Applications ✓ Chat, Messaging & WebRTC Video Calling ✓ Fintech & Banking Solutions ✓ Healthcare & Telemedicine Apps ✓ OTT & Video Streaming Platforms ✓ SaaS & Enterprise Applications ## BLE, IoT & POS EXPERTISE ✓ Bluetooth Low Energy (BLE) Communication ✓ GATT Services & Characteristics ✓ Device Pairing & Provisioning ✓ Wearable Device Integration ✓ Smart Home & Connected Devices ✓ POS Terminal Integration ✓ Payment Device Connectivity ✓ BLE Reconnection Strategies ✓ Background Synchronization ✓ OTA Firmware Updates (FOTA) ✓ Sensor Data Processing ✓ Real-Time Device Communication ## MONETIZATION & DEPLOYMENT ✓ App Monetization Strategy (AdMob, Ad Revenue Optimization) ✓ App Store & Play Store Release Support ✓ CI/CD & Release Management ✓ Performance Optimization for High-Download, High-Retention Apps ## TECH STACK Kotlin • Jetpack Compose • Flutter • Swift • SwiftUI • React Native • Kotlin Multiplatform • BLE • IoT • POS • WebRTC • Firebase • GraphQL • REST APIs • Supabase • AWS • Room • SQLDelight • Coroutines • Hilt • MVVM • MVI • Clean Architecture ## WHAT CLIENTS GET ✓ Fast Development ✓ Clean, Scalable Architecture ✓ Daily Communication ✓ Long-Term Support ✓ Production-Ready Code ✓ BLE, IoT & POS Integration Expertise ✓ App Store & Play Store Release Support Whether you need a new mobile app, a senior engineer to rescue a struggling project, build a BLE-enabled wearable solution, integrate connected devices, develop a POS application, or scale an existing product, I can help. Let's build software that users love and products that stand the test of time.