Browse categories
Explore
Fiverr Pro
English
$
USD
I will fix firebase, migrate firebase, claude ai development, app backend nodejs
Sophia
About this gig
Are you stuck with a buggy or broken app built with Vibe Coding tools like Cursor, Lovable, Bolt, Replit, V0, or Base44? You're not alone AI-generated code often needs a human developer to clean, fix, and make it production-ready.
As a full-stack Flutter developer and Firebase expert, I specialize in debugging, fixing, and optimizing apps built on any Vibe Coding platform.
Whether you have a broken AI website, need a Flutter bug fix, or want a clean Firebase backend I deliver real results.
What I Can Fix For You:
- Flutter bug fix broken UI, navigation, state management, and logic errors
- Android bug fix crash reports, ANRs, and performance issues
- Firebase Firestore, Auth, Cloud Functions, Realtime DB, and Storage
- Firebase migration to Firebase 10 or a seamless switch to Supabase
- Base44 integration connect your Base44 app to any API or Node.js backend
- Base44 migration upgrade from Base44 to a scalable, production-ready stack
- Lovable website fixes debug, clean, and optimize Lovable-generated frontends
- Vibe Coding cleanup refactor messy AI-generated code into clean, maintainable structure
- Supabase setup, auth, RLS policies, edge functions, and database migrations
- Vercel deployments
Get to know Sophia
Sophia
Flutter app developer, Backend development, React Native Mobile App
- FromUnited States
- Member sinceMay 2026
- Avg. response time1 hour
Languages
English, Dutch, German, Spanish
Flutter & Firebase developer with 4+ years building production-ready iOS and Android apps for clients worldwide.
I specialize in turning ideas into real, working apps with clean code, smooth UI, and zero guesswork on delivery.
What I bring to every project:
✅ Firebase Auth, Firestore & cloud storage
✅ GPT-4 AI chat integration
✅ Subscription paywalls (StoreKit/RevenueCat)
✅ App Store & Play Store submission
I don't just write code I solve problems. Every app I deliver is tested, documented, and built to scale.
Let's build something great.
My Portfolio
FAQ
Can you fix my Flutter bug fix issues caused by Firebase 10 upgrades?
Absolutely! I specialize in Flutter bug fix problems triggered by Firebase 10 migration — including null safety errors, deprecated plugin conflicts, broken auth flows, and Firestore query issues. Your Flutter app will be fully stable and production-ready after I'm done.
Do you handle Vibe Coding projects from Lovable, Base44, Bolt, or Cursor?
Yes! I am a Base44 expert and I work with all Vibe Coding platforms including Lovable, Bolt, Cursor, V0, and Replit. I fix, clean, and optimize any Lovable website or AI website turning messy AI-generated code into clean, scalable production code.
Can you do Base44 migration and Base44 integration with external APIs?
Definitely! I handle complete Base44 migration to scalable stacks and full Base44 integration with Node.js backends, REST APIs, Firebase, and Supabase. Whether you need a simple connection or a full migration, I've got you covered as a proven Base44 expert.
Do you fix Android bug fix issues and deploy to Vercel or Supabase?
Yes! I handle Android bug fix crashes, ANRs, performance lags, and build errors and I also set up and optimize full Supabase backends and Vercel deployments, including CI/CD pipelines, serverless functions, edge configs, and Supabase RLS policies on Vercel.
Are you a Flutter developer who can rebuild my AI website backend?
Yes! As a skilled Flutter developer, I build and fix cross-platform apps and also develop robust Node.js + Firebase or Supabase backends for any AI website. From Android bug fix to full backend architecture I deliver clean, documented, and scalable solutions fast.
