React Native Developer — Finish Building "Flip" App (Backend, Auth & Payments)

I need a developer to build Flip — a React Native (iOS + Android) app where users "flip" comfort food recipes to match their macro targets using AI, plus a Pantry Mode that builds meals from ingredients they already have. I already have: a complete working HTML/JS prototype of every screen, a full product requirements document (features, AI prompts, pricing, data model, legal requirements), and a partially-built source code scaffold — React Native frontend + Node.js/Express backend, already calling the Anthropic Claude API, with a working SQLite database and daily usage limits. All files will be attached to this post / shared immediately with anyone I message. Tech stack: React Native (Expo), Node.js/Express, PostgreSQL (currently SQLite, needs migrating), Anthropic Claude API (integrated), RevenueCat for subscriptions. What's left: real authentication, real subscription verification (Apple/Google IAP + RevenueCat), subscription cancellation on account deletion, migrating to PostgreSQL, deploying the backend, building out remaining screens (recipe sheet, shopping list logic), and App Store/Google Play submission with account deletion compliance. Looking for a React Native developer comfortable owning both frontend and backend, able to work from a detailed spec. Based in or near Australian time zones preferred, but open to strong candidates elsewhere.