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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, a full-stack web developer from Pakistan. I build websites and platforms for coaches, consultants, course creators and small businesses: booking and enquiry forms, client or student accounts, payment flows and admin dashboards you can manage yourself. My recent project is a complete online course platform with student dashboards, enrollment, payment verification and an admin panel. I work in PHP, MySQL, JavaScript, React and Node.js, agree scope and price in writing, and update you every few days. Message me before ordering and I'll suggest the right package.
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.
