Senior Flutter Architect - Core Framework Stabilization Sprint

We are hiring a senior independent individual Flutter/Dart architect for a high-velocity, $500 fixed-price framework stabilization and integration sprint. All pre-coded layouts and backend assets are fully intact on our master repository branch. Your focus is executing targeted software surgery to make our application launch-ready on device glass. The 10-Point Master Launch Framework: 1. Media State Management: Patch our 6-zone media player buffers to cache flawlessly and loop endlessly without freezing at the 2-second mark on real device glass. Cleanly un-brick native microphone paths inside our vocal booth loop. 2. Isolated Audio Sync Pinpoint: Repair a specific synchronization latency offset module affecting one single track layout to keep our backing libraries pristine. 3. Lip-Sync Video Rendering: Fully repair and stabilize the core multimedia compilation loop so lip-sync videos render flawlessly on physical handset glass without crashing. 4. Credit Purchase & 10-Credit Alignment: Resolve the explicit error message users receive when attempting to purchase credits, and secure transaction code logic to ensure the 10-credit purchase tier packages credit perfectly to user account database rows. 5. Godmode Administrative Track Uploads: Fix and enable the backend management interface so administrators can seamlessly upload tracks directly from 'Godmode' to the application servers on total autopilot without authentication drops. 6. RevenueCat Gateway Sync: Synchronize our RevenueCat transaction product ID configuration strings so they match our live Apple App Store Connect and Google Play Console production profiles. 7. Soundraw API Integration: Activate and validate pre-built Soundraw API backend channels to execute background JSON network calls to dynamically stream backing tracks over-the-air. 8. Multi-Genre Category Layout: Natively add, structure, and configure exactly 10 specific tracks inside the proper categories and navigational arrays within the source code layers (Boom Bap, Trap, Lo-Fi, Afro-Beats). 9. Text Casing Correction: Locate master string tables or text widget rows and update casing so brand name renders correctly as "RapScene AI" perfectly across all interface layouts instead of lowercase strings. 10. Launcher Icon Scaling: Access native Android res and iOS xcassets resource folders to correctly upscale and enlarge the application icon asset profile to bold, full-frame proportions on device home screens without pixelation. The $500 fixed milestone is strictly all-inclusive of this entire 10-item blueprint. Our system due date will show July 11th on the ledger rows strictly as a standard administrative buffer. Your actual hands-on code delivery and target for a functional build on glass is July 7th or 8th. We do not do partial payouts for partial work. To bypass automated agency spam and bot proposals, you MUST answer this screening question textually to be considered: What is 12 plus 15? If your answer is incorrect, your proposal is automatically archived. Strict NDA applies prior to repository whitelisting. Ready to award immediately today.