React Native & React Developer: Customer Apps, Admin Portals and Offline PWA, Fixed Price

We're building customer and staff apps for a multi-location retail service business. The apps sit on top of a new cloud backend (built by our backend team) that connects to a legacy point-of-sale system. The apps only talk to the new backend, never to the POS directly. What you'll build: - Customer app in React Native for iOS and Android, plus a matching responsive website - Merchant portal for store owners and staff (React) - Platform admin portal for our support team (React) - A small driver PWA for pickups and deliveries, with an offline queue that syncs when the connection returns Key features: sign-in and account linking, invoices and order status, Authorize.net Accept Hosted checkout (hosted payment page, no card data in the app), receipts, pickup and delivery scheduling, loyalty, push and email notifications, and clear loading, empty, stale and offline states on every screen. You will also handle App Store and Google Play releases under the client's own developer accounts. The customer app and website come first: test builds with sign-in, invoices, order status and payment are due by about week 14. The portals and driver PWA follow. Budget: fixed price of USD 14,000 for the full scope, paid in milestones as each phase is accepted, with the final milestone paid after the in-store pilot is signed off. No upfront payment; each milestone is funded into Upwork escrow before work on it starts. Timeline: about 30 to 40 hours per week for roughly 7 months, starting late November or early December. You'll work with a backend lead, a payments engineer, a QA engineer and a project manager. To apply, tell us: 1. Links to React Native apps you shipped to the App Store or Google Play, and what you built on each 2. Any admin portals or PWAs (especially with offline support) you built 3. Confirm you can take the role at the fixed USD 14,000, paid by milestone, and how many hours per week you can commit Proposals without links to shipped work will not be considered.