My Flutter application is feature-complete but still plagued by a mix of UI/UX and performance issues that show up on both Android phones and iPhones. I need a developer who can dive into the existing codebase, isolate the root causes, resolve them cleanly, and then guide the project all the way through successful publication on Google Play and the App Store. You’ll investigate and correct the visual glitches, layout oddities, and navigation rough edges that are hindering a smooth user experience. At the same time, I expect you to profile the app, trim any performance bottlenecks, and make sure it launches fast, scrolls smoothly, and runs without memory leaks or unexpected slow-downs. Once the fixes are stable, I’ll count on you to prepare production builds, configure signing certificates and provisioning profiles, and handle the final submission steps so the releases pass review on the first attempt. Deliverables • Clean, well-commented code with all UI/UX and performance issues resolved • Tested, store-ready builds (AAB/APK for Android, IPA for iOS) • A concise change-log and release notes suitable for the stores • Guidance or troubleshooting up to the point both stores list the app publicly The code is entirely in Flutter/Dart, so experience with common packages, platform-specific quirks, and release workflows is essential. If you’ve taken apps from bug-ridden to store-approved before, I’d love to rely on that expertise here.