I will fix flutter bugs and optimize app performance fast

H
hassnain_haide
H
hassnain_haide
Hassnain Haider
fix flutter bugs and optimize app performance fast
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fix flutter bugs and optimize app performance fast

About this gig

I will fix Flutter bugs, errors, crashes and optimize your app performance as an experienced Flutter developer.

Having issues with your Flutter app? I specialize in debugging, fixing problems, and making your app fast and smooth on both Android and iOS.


**What I Can Fix:**

- App crashes and exceptions

- UI/UX bugs and layout issues

- State management problems (Provider, Riverpod, Bloc)

- Firebase integration errors

- API connection issues

- Performance lag and slow loading

- Memory leaks and high CPU usage

- Build errors and release issues

- Android & iOS specific problems


**Services Include:**

- Deep debugging and code analysis

- Performance optimization (faster loading, less battery usage)

- Code cleanup and best practices

- Flutter version migration

- Fix after package updates

- App stability improvements


**Why Choose Me?**

- Fast delivery (most fixes done in 24-48 hours)

- Clean and well-commented code

- Detailed explanation of changes

- Before & After performance report

- 100% satisfaction or money back


Send me your Flutter project and I will quickly diagnose and fix all bugs while optimizing performance.

Message me now with your issue!

  • App type

    • Native

  • Programming language

    • Dart
    • Java
    • JavaScript
    • Kotlin
    • Objective-C
    • Python
    • Swift
    • TypeScript
    • HTML
    • Flutter

  • Frameworks

    • Flutter

  • Purpose

    • Chat
    • Taxi
    • Entertainment
    • Medical
    • Health & fitness
    • Maps & navigation
    • Education
    • Custom
    • Ecommerce
    • Real estate

  • Tools

    • Power apps
    • Flutterflow
    • Android Studio
    • Xcode
    • Firebase
    • Visual Studio Code
    • Visual Studio

  • Expertise

    • Localization
    • Performance
    • Security
    • Design
    • Firebase
    • API integration

Get to know Hassnain Haider

Hassnain Haider

Flutter Mobile App Developer for iOS and Android

  • FromPakistan
  • Member sinceJul 2026
  • Avg. response time1 hour

  • Languages

    English, Urdu
I’m a Software Engineer and Flutter Mobile App Developer with 5+ years of experience crafting high-quality, cross-platform mobile applications for startups, enterprises, and global clients. I specialize in building scalable, user-centric Android & iOS apps. My expertise includes seamless REST API & WebSocket integrations, payment gateways (Stripe, PayPal, Razorpay), Google services, and third-party SDKs. I excel at converting Figma designs into pixel-perfect, high-performance interfaces with exceptional user experience. {Bachelor’s in Software Engineering}.

My Portfolio

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