Bilal R.

Expert Mobile App Developer and Architect with 8 years of experience in React Native Expo, Flutter, Native App and AI Built Mobile and backend developer. I help founders Upgrade Legacy/Older version Mobile Apps, fix, optimise and launch iOS and Android apps, especially ones built with AI tools like Cursor, Lovable or Rork that work in testing but aren’t ready for the App Store or Google Play yet. Beyond that, I conduct code reviews and full end-to-end technical audits of mobile applications, From Catching Early Store rejections, covering system design, architecture, scalability, performance optimisation, and overall application health. I also work on Large Scale Mobile App Engineering Challenges, including state management, real-time data synchronisation, API integrations, HIPAA-compliant flows, wearable integrations, in-app purchases, and AI-powered features. ✅ 𝗛𝗼𝘄 𝗜 𝗳𝗶𝘅 𝗮𝗻𝗱 𝗹𝗮𝘂𝗻𝗰𝗵 𝘃𝗶𝗯𝗲-𝗰𝗼𝗱𝗲𝗱 𝗮𝗽𝗽𝘀 1. 𝗘𝗮𝗿𝗹𝘆 𝗯𝗹𝗼𝗰𝗸𝗲𝗿𝘀. In the first day or two, I flag anything that would stop the launch, like a startup crash, a broken build or a dead sign-in button. 2. 𝗦𝘁𝗼𝗿𝗲 𝗿𝗲𝗮𝗱𝗶𝗻𝗲𝘀𝘀. I check EAS config, permissions, account deletion, privacy policy, and anything Apple or Google would reject. 3. 𝗙𝗲𝗮𝘁𝘂𝗿𝗲𝘀, 𝗯𝘂𝗴𝘀 𝗮𝗻𝗱 𝗰𝗿𝗮𝘀𝗵𝗲𝘀. I check every screen against your design for missing features, buttons that aren't connected, bugs and crashes. 4. 𝗨𝗜 𝗶𝘀𝘀𝘂𝗲𝘀. Inputs hidden behind the keyboard, broken layouts on small screens, and anything that doesn't match your design. 5. 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆 𝗮𝗻𝗱 𝗯𝗮𝗰𝗸𝗲𝗻𝗱. Exposed API keys, open database rules, paid features unlocked for free, and unfinished backend parts like sockets. 6. 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 𝗮𝗻𝗱 𝗰𝗼𝗱𝗲. Slow screens, memory leaks, Android lag, and messy code that makes new features hard to add. 7. 𝗔𝘂𝗱𝗶𝘁 𝗿𝗲𝗽𝗼𝗿𝘁. One page shows whether you're ready to launch, what must be fixed, what can wait, and the hours for each. 8. 𝗙𝗶𝘅 𝗮𝗻𝗱 𝗿𝗲𝗹𝗲𝗮𝘀𝗲. I fix what blocks approval first, test on real devices, and stay on it until both stores approve the app. ✅ Fix App Store blockers and critical rejections before you submit ✅ Vibe-Coded App review and technical audits covering architecture, security and scalability ✅ Bug fixing and performance optimisation for React Native, Expo and Flutter apps ✅ App Store and Google Play release, TestFlight, and rejection fixes ✅ In-app purchases and subscriptions security and flow fix ✅ MVP development from scratch for startups ✅ Top Rated 100% Job Success Score across all contracts ✅ Successful Launch of Mobile Apps to the App Store and Google Play ✅ Tech Stack ✔️ AI Coding Tools: Cursor, Claude Code, Lovable, Rork ✔️ Mobile: React Native, Expo, EAS, TypeScript, Flutter, Dart, Swift, SwiftUI, Kotlin ✔️ State Management: Redux Toolkit, Zustand, React Query, Bloc, Riverpod, Provider ✔️ Payments & Subscriptions: RevenueCat, StoreKit, Google Play Billing, Stripe ✔️ Backend & API: Supabase, Firebase, Node.js, Python (FastAPI, Django, Flask), REST, GraphQL, WebSockets ✔️ Databases: PostgreSQL, Firestore, MongoDB, SQLite ✔️ AI Features: OpenAI, Anthropic Claude, Gemini, AI chat and image features ✔️ Notifications & Monitoring: Firebase Cloud Messaging, Expo Notifications, Sentry, Crashlytics ✔️ Store Release: App Store Connect, TestFlight, Google Play Console, EAS Submit ✔️ Cloud: AWS, Google Cloud, Firebase Cloud Functions, Supabase Edge Functions ✔️ Tools: Git, GitHub, GitLab, Bitbucket, Jira, Trello ✅ What I am Expert in ✔️ Vibe-Coded Web apps to Full Mobile App conversion ✔️ Vibe coding MVP for mobile apps ✔️ Fixing and shipping vibe-coded and AI-built apps from Lovable, Replit, Bolt, v0, Cursor, and Claude into production ready React Native ✔️ React Native across Expo Managed, Bare, and CLI, built for production and not just for a demo ✔️ Performance audits covering startup time, render performance, memory leaks, Android lag, and crashes ✔️ Code review and architecture review for apps that have outgrown their first version ✔️ Stabilising fast built or AI assisted MVPs so they are ready to scale ✔️ In app purchases, subscriptions, RevenueCat, and Stripe, including the messy iOS and Android edge cases ✔️ Supabase and Firebase for auth, RLS, real time, storage, and proper staging and production setups ✔️ Expo SDK upgrades, the New Architecture, Android API 35, and replacing dead libraries ✔️ CI and CD with EAS Build, Fastlane, and GitHub Actions, plus App Store and Play Store releases ✔️ Real time features, WebSockets, push notifications, deep linking, and offline first apps ✔️ AI features using the OpenAI and Claude APIs, running in production right now If you are looking for a reliable Mobile app developer, Tell me what you are building, or what is breaking in your app, and I will tell you what I actually resolve it or bring your idea to life 🚀.