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I will fix flutter bugs and add new features
Sajjad Khan
About this gig
Flutter & React Native Bug Fix | Firebase | API Integration | Feature Development
Is your Flutter or React Native app crashing, showing build errors, or not working as expected? Need to add a new feature or fix Firebase/API issues? You're in the right place.
I provide professional mobile app maintenance, debugging, and feature development for Android and iOS applications.
What I can help you with:
Flutter bug fixing
React Native bug fixing
Firebase Authentication & Firestore
REST API integration
Login & signup issues
Push notifications
Payment gateway integration
UI/UX improvements
App crash fixes
Android & iOS build error fixes
Performance optimization
Code refactoring & maintenance
New feature development
Play Store & App Store build support
Common issues I fix:
- App crashes or freezes
- Firebase not connecting
- API integration errors
- Login and authentication problems
- Build/Gradle dependency issues
- Slow app performance
- Broken UI after updates
- Package conflicts
- Runtime exceptions
Why choose me?
Clean and maintainable code
Fast communication
Thorough testing before delivery
Reliable support throughout the project
- Please contact me before placing an order. Send your source code, screens
Get to know Sajjad Khan
Sajjad Khan
Full Stack Web Developer,PHP,JavaScript,Tailwind CSS
- FromPakistan
- Member sinceJan 2023
- Avg. response time1 hour
Languages
English, Urdu
Hi, I'm Sajjad Khan, a Full Stack Web Developer specializing in HTML, CSS, JavaScript, PHP, MySQL, Tailwind CSS, and Bootstrap. I build responsive, secure, and user-friendly websites, custom web applications, admin dashboards, and landing pages. I focus on clean code, timely delivery, and clear communication. Whether you need a new website, bug fixes, or improvements to an existing project, I'm committed to delivering high-quality solutions that meet your business needs.
My Portfolio
FAQ
Can you fix bugs in my Flutter app?
Yes. I fix Flutter bugs, crashes, UI issues, Firebase errors, API problems, build errors, and performance issues for Android and iOS apps.
Do you work with React Native apps?
Yes. I can fix bugs, add features, resolve API and Firebase issues, and solve Android and iOS build errors in React Native apps.
Can you integrate or fix Firebase?
Absolutely. I work with Firebase Authentication, Firestore, Realtime Database, Storage, Cloud Messaging (FCM), and other Firebase services.
Can you fix API integration issues?
Yes. I can resolve REST API errors, authentication issues, data loading problems, payment API integration, and backend connectivity issues.
Can you add new features to my app?
Yes. I can add screens, authentication, profile management, search, filters, push notifications, payment gateways, Firebase features, and other custom functionality.
Can you fix Android and iOS build errors?
Yes. I can troubleshoot Gradle, CocoaPods, dependency conflicts, SDK compatibility, and other build issues for Flutter and React Native projects.
Can you improve my app's performance?
Yes. I can optimize slow screens, reduce loading times, improve app responsiveness, and clean up inefficient code.
Can you help publish my app?
Yes. I can prepare and upload your app to the Google Play Store or Apple App Store if this service is included in your package or added as a Gig Extra.
What do you need to get started?
Please send: Source code A description of the issue Screenshots or screen recordings (if available) Error logs (if available) API or Firebase access (if required)
Should I contact you before placing an order?
Yes, please. Send me your project details first so I can review the requirements and recommend the right package, timeline, and price.
