I need a unified development effort that delivers both a fully-featured e-commerce website and companion mobile apps for iOS and Android. The project should feel seamless to the end user—shared product catalog, single sign-on, synchronized carts, and real-time order status across every device. Core scope • Design and build a responsive e-commerce site (web first, mobile friendly) with product browsing, search, secure checkout, multiple payment gateways, customer accounts, and an intuitive admin panel for inventory and order management. • Develop native-quality apps for iOS and Android that mirror the site’s functionality, push order notifications, enable secure in-app payments, and store limited offline data for a smooth experience on slow connections. • Implement a single backend (REST / GraphQL preferred) so website and apps pull from the same source of truth. • Deploy to production, handle App Store / Google Play submission, and provide brief hand-off documentation. Acceptance criteria 1. Website passes Google Lighthouse performance and accessibility scores of 85+. 2. iOS and Android builds accepted by Apple App Store and Google Play without required re-submissions. 3. All user actions (add-to-cart, checkout, profile edits) stay in sync when a customer switches between web and app within 30 seconds or less. 4. Admin panel lets me add, edit, and retire products without developer assistance. Tech flexibility I’m open to React, React Native, Flutter, or a clean native-plus-web stack—choose what best meets the criteria above while keeping future maintenance straightforward. Timeline and collaboration style can be discussed once you have a clear sense of the build.