I have a mobile application developed entirely in FlutterFlow. Most of the UI, screens, and navigation flows are already completed. App test link: https://desiyaar.flutterflow.app/ I am looking for an experienced FlutterFlow developer to focus on backend integration, data binding, and logic implementation. ⚠️ The app must continue to be developed only using FlutterFlow. Scope of Work 1. Data Binding & Firestore Integration Connect existing UI components to Firebase Firestore Move critical data from App State to Firestore Ensure profile data persists across sessions and devices Fix issues where completed profiles show default data 2. Firebase Authentication Review and stabilise Firebase Authentication flow Fix minor UI and logic issues Ensure proper user session handling Ensure authenticated users are correctly linked to Firestore documents 3. Chat / Messaging Functionality Chat UI already exists Make chat fully functional using Firestore: Send & receive messages Real-time updates Message timestamps Proper sender/receiver handling Ensure chat data structure is scalable and secure 4. Payment Integration (Future-Ready) Payment UI already exists Set up payment flow (Razorpay / PhonePe or equivalent) API keys will be provided later (KYC in progress) Payment logic must be implemented so keys can be added later without restructuring Implement free-now, paid-later monetisation using Firestore-based feature flags 5. Backend Queries & Stability Create and optimise FlutterFlow backend queries Ensure data consistency and error handling Prevent duplicate or broken states Technical Requirements Proven experience with FlutterFlow Strong knowledge of Firebase Authentication & Firestore Experience implementing real-time chat in FlutterFlow Experience with payment gateway integration Ability to debug existing logic and workflows Deliverables Fully functional Firestore-backed app Working real-time chat system Stable authentication flow Future-ready payment system Clean and scalable backend logic App ready for production deployment