Project: Unified Inventory, Invoicing & Delivery App for Checked Appliances

Here's the exact skillset to search for and screen on Upwork: **Core stack** - **React Native** (or Flutter) — cross-platform mobile dev, iOS + Android from one codebase - **Firebase or Supabase** — real-time cloud database/backend, handles the multi-device sync - **Node.js** (or similar) — backend/API layer to glue everything together (this is the person who builds the "logic" connecting inventory → invoice → delivery) **Integration-specific experience (search for these by name)** - **Square API/SDK** — in-app payments - **WooCommerce REST API** — website inventory sync - **eBay API** (Trading API or Sell API) — listing sync - **Google Maps API or Mapbox** — route view + live GPS tracking - **Push notification services** (Firebase Cloud Messaging or OneSignal) — team notifications on delivery trigger - **Barcode/QR generation libraries** — for the Q Number labels **Roles you actually need (this is a multi-person job, not one generalist)** 1. **Full-stack mobile developer / lead** — owns architecture, React Native + backend. This is your main hire. 2. **Backend/API developer** — if the lead isn't strong on backend, a second person handling the Square/WooCommerce/eBay integrations and the payment-reconciliation logic (the trickiest part of the whole build) 3. **UI/UX designer** — someone to design the actual screens before dev starts, so drivers/staff aren't fighting a clunky interface. Cheap relative to dev cost, worth it.