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👋 Summary Native iOS (SwiftUI) and Android (Jetpack Compose) app development with Ruby on Rails backend integration. 👨‍💻 Open Source Projects iOS: 65 GitHub Stars Android: 11 GitHub Stars Production-ready app templates for iOS and Android, featuring built-in user authentication and advanced NFC capabilities. 📱 Product: NFC-Powered Waitlist App iOS: App Store Android: Google Play Replaces traditional paper number tags with an NFC-based system for managing walk-in waitlists. App writes app-specific data to two NFC tag types: - 🔴 Server Tag - 🔵 Customer Tag ✅ Customer Flow Customers tap a 🔵 Customer Tag to access a 🟢 public Number Tags Webpage displaying completed tags in real time. ✅ Staff Flow Staff tap a 🔴 Server Tag paired with a 🔵 Customer Tag to mark a number as complete. Completed tags instantly appear on the 🟢 Number Tags Webpage for the customer. 🧪 Tech Stack iOS (Swift / SwiftUI) 100% Swift 99% SwiftUI (UIKit only for contact screen) @Observable (iOS 17) SwiftLint MVVM architecture Unit tests with SwiftTesting Android (Kotlin / Jetpack Compose) 100% Kotlin 100% Jetpack Compose Hilt for dependency injection Retrofit2 Proto DataStore Modern Android app architecture Unit tests Backend (Ruby on Rails) Rails 7.1.x devise_token_auth jsonapi-serializer pundit Turbo / Hotwire Backend powers both mobile APIs and dynamic web pages. 🛠️ Skills Programming Languages Ruby Swift Kotlin JavaScript Frameworks & Tools Ruby on Rails iOS Native (SwiftUI) Android Native (Jetpack Compose) Hotwire Tailwind CSS IDEs Xcode Android Studio Visual Studio Code 📚 Recommended Reading Clean Code The Clean Coder Clean Architecture Clean Agile Refactoring Ruby Refactoring UI 📜 Certifications Apple Search Ads Certified 基本情報技術者(Fundamental Information Technology Engineer – Japan) ソフトウェア開発技術者(Software Development Engineer – Japan, formerly Applied Information Engineer)

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