Need a Mobile App Developer to Build an E-Commerce Marketplace Mobile App

We are looking for an experienced Mobile App Developer to build a modern, scalable E-Commerce Marketplace mobile application from scratch. The app will connect buyers and sellers on one platform, allowing users to browse products, search and filter listings, manage their accounts, place orders, make payments, and track deliveries. We are looking for someone who can handle the complete mobile app development process, from UI implementation and backend integration to testing and production deployment. Responsibilities - Build the mobile application from scratch for iOS and Android. - Develop a clean, modern, and responsive user interface. - Implement user registration, login, and profile management. - Build product browsing, categories, search, filters, and product details. - Implement shopping cart and checkout functionality. - Integrate secure online payment systems. - Build order management and order tracking. - Develop seller features for adding and managing products. - Implement ratings and reviews. - Integrate push notifications. - Connect the mobile app with backend APIs. - Handle image and media uploads. - Ensure strong app performance, security, and scalability. - Test the application and fix bugs before launch. - Prepare and deploy the app to the Apple App Store and Google Play Store. Required Skills - Flutter or React Native - Strong experience with iOS and Android development - Backend/API integration - REST APIs - Firebase or similar services - Database experience such as PostgreSQL or MongoDB - Payment gateway integration - Push notifications - Git/GitHub - App Store and Google Play deployment Nice to Have - Previous experience building marketplace or e-commerce apps. - Experience with multi-vendor marketplaces. - Experience with seller dashboards and order management. - Experience integrating delivery or logistics APIs. - Strong understanding of mobile UI/UX. - Experience working with AI-powered features. Deliverables - Fully functional iOS and Android marketplace app - Buyer and seller functionality - Product catalog and search - Shopping cart and checkout - Payment integration - Order and delivery tracking - Push notifications - Backend/API integration - Production-ready source code - App Store and Google Play deployment - Basic technical documentation To Apply Please include: - Links to 2–3 similar e-commerce or marketplace mobile apps you have built. - Your preferred technology stack and why you recommend it. - Your estimated timeline for completing the project. - Your hourly rate or fixed-price estimate. - Briefly explain your experience with payment gateway and marketplace integrations. - Let us know if you can handle both development and app-store deployment. We are looking for a reliable developer who can take ownership of the project, communicate clearly, write clean and scalable code, and deliver a production-ready mobile application.