I already have an Expo project started and need an experienced React Native developer to finish the front-end for a small, fully local crypto-exchange mock-up. The work is strictly UI—no server calls, no blockchain integration—everything is stored on the device. Scope of the remaining work • Complete three screens: Home Dashboard, Buy/Sell, and Portfolio, wired together with React Navigation. • Add a lightweight security gate: a 4-digit PIN code set on first launch and validated on every app open (SecureStore or similar local option is fine). • Implement the layout exactly as in the Figma design reference I’ll share; responsiveness on common phone sizes is essential. • Persist mock portfolio data, recent trades, and the user’s PIN via AsyncStorage (or SecureStore for the PIN). • Keep the code clean, component-based, and ready for future state-management upgrades (Context or Redux toolkit if you prefer). Deliverables 1. Updated Expo project in a Git repo with clear commits. 2. Pixel-perfect UI for all three screens, fully navigable. 3. Local data persistence and PIN flow working on both iOS and Android simulators. 4. Brief README explaining setup, key components, and where to plug in an eventual backend. I’m available for quick questions and can review incremental pushes, so feel free to work iteratively. Let’s wrap this up and make the demo shine!