The core of my app is already prototyped in Emergent and the basic functionality works, but the experience still feels rough and the build is not yet production-ready. I now need an experienced mobile developer who can take that prototype, refine every screen visually, and squeeze maximum speed out of the code so the final result feels polished on both iOS and Android devices. Here is what matters most to me: • UI/UX improvements: colours, spacing, typography and micro-interactions should line up perfectly with the original Emergent designs while following Apple HIG and Material guidelines. • Performance optimisation: scrolling must remain buttery-smooth, screens should open in under two seconds on mid-tier phones, and network calls need smart caching to keep data usage low. You are free to work in the framework you’re strongest with—native Swift / Kotlin, React Native, Flutter, or another cross-platform stack—as long as the final deliverable runs efficiently on current iOS and Android versions. Deliverables I expect at the end: 1. Updated, well-structured source code in a private Git repo. 2. Production builds ready for TestFlight and Google Play internal testing. 3. A short hand-off document outlining any new libraries, build steps and store-submission notes. I can provide the Emergent prototype link, existing codebase and all brand assets the moment we start. Let me know roughly how many iterations you foresee for design tweaks, and share a past project where you took an MVP and brought it up to store-ready quality.