I am looking for an experienced Flutter developer to build an Android mobile application for my existing website: https://trustserve.store. The app must NOT be a WebView. I need a proper Flutter-based mobile application that is fully connected to my WordPress backend using REST API, so that all data between the website and the app stays completely synchronized. Project Overview: My website is a real estate and classified listings platform (similar to OLX). The mobile app should act as a frontend and fetch/send all data from/to the website database via API. Core Requirements: - Develop a Flutter-based Android app - Integrate with WordPress REST API - Fetch listings, categories, and user data from website - Allow users to post ads (data must be stored on website) - User authentication system (Google Sign-In + mobile OTP preferred) - User profile section (manage listings, account details) - Search and filter functionality - Clean, modern, and fast UI/UX Additional Features (Preferred): - Push notifications (Firebase) - Favorites / saved listings - Basic in-app chat between users Technical Notes: - Website backend is already built on WordPress - Developer should handle API integration properly - App should be scalable and well-structured Deliverables: - Complete Android APK - Source code (Flutter project) - Proper API integration - Basic documentation Timeline: 3–5 weeks Budget: Open to reasonable proposals based on experience and quality. Please share your portfolio or previous similar work (especially marketplace or real estate apps).