React Native App Enhancement Web/iOS/Android

**Description:** We're seeking an full-stack developer to improve and complete an existing Calendar application. The project involves fixing current implementation issues and adding new features to match our reference web application. Required Skills: - React Native/React.js - TypeScript (Deno) - Firebase Authentication & Database - Google/Apple Sign-In integration - Docker containerization - iOS/Android deployment - Google Sheets API integration **Project Scope:** 1. Technical Assessment & Fixes: - Review existing codebase - Debug and fix current implementation issues - Implement missing functionality - Ensure cross-platform compatibility 1. **Authentication Enhancement:** - Google Sign-In integration - Apple Sign-In for iOS - Firebase user data management - User state persistence 1. **Core Features Implementation:** Calendar features & reference implementation are provided to a candidate upon request. Calendar features are already fully functional in our existing web-app. 2. **Multilingual System:** - Implementation of translation management via Google Sheets - Support for 3 languages (expandable) - Persistent language preferences 1. **Deployment:** - Web application deployment - iOS App Store deployment - Google Play Store deployment **Requirements:** - Available for regular progress updates Note: Selected candidate must sign an NDA before accessing project materials. All source code and implementation details are confidential. **Additional Details:** - Existing codebase and mockups will be provided