I will fix bugs, crashes and performance issues in your app

France

I speak English, French

Senior Flutter Kotlin Mobile Developer

I'm a Senior Mobile Developer with 8 years of professional experience, specializing in Flutter and native Android (Kotlin). I've worked on production applications in banking and healthcare, where rel...
About this Gig

App crashing, slow, or rejected by Google Play or the App Store? Previous developer gone?


I'm a senior mobile developer with 8 years of experience maintaining production apps in banking and healthcare. I find the root cause, fix it properly, and explain what went wrong, so the problem doesn't come back.


I can help with:

  • Crashes, freezes and ANRs (Flutter, Kotlin, Jetpack Compose)
  • Build errors after a Flutter, Gradle or Android SDK update
  • Google Play target API level and policy updates
  • App Store and Google Play rejections
  • Slow screens, memory leaks and battery drain
  • Code taken over from another developer


What you get:

  • A clear explanation of each issue and its fix
  • Clean, tested code delivered through Git or a zip
  • Advice to avoid the same problems in the future


Before ordering, please message me with a short description and, if possible, the error logs. I'll confirm I can fix it and give you an accurate quote.

Platform:

Cross-platforms

App type:

Hybrid

Frameworks:

Flutter

•

Jetpack Compose

Purpose:

Chat

•

Social networking

•

Medical

•

Health & fitness

Expertise:

Localization

•

Performance

•

Security

•

Firebase

Programming language:

Dart

•

Java

•

Kotlin

Tools:

Android Studio

•

Xcode