Browse categories
Explore
Fiverr Pro
English
$
USD
I will fix bugs and optimize your react native flutter or web app
Full Stack Product Engineer for MVP, SaaS and AI Products
I help founders and startups turn ideas into MVPs, SaaS platforms, and AI products ready for launch and scale.
👨💻 As a Full Stack Product Engineer and founder of NexiOrbit, I focus on fast executi...
About this Gig
Having issues with your mobile or web app? I can fix them quickly and professionally.
Is your application crashing, showing errors, or not working as expected?
I will debug, fix, and optimize your application so it runs smoothly, efficiently, and error-free.
With 5+ years of experience in React Native, Flutter, Firebase, Node.js, and modern web development, I focus on identifying the root cause of issues and delivering clean, production-ready fixesnot temporary patches.
WHAT I CAN FIX
- App crashes and runtime errors
- Firebase authentication and database issues
- API and backend integration problems
- UI bugs and layout issues
- Performance problems (lag, slow apps)
- State management issues
- Build and deployment errors
- Unexpected app behavior
TECHNOLOGIES I USE
- React Native, Flutter, Firebase, Node.js, Express, MongoDB, React.js, Next.js, JavaScript
- WHY CHOOSE ME
- Fast and accurate debugging
- Clean and scalable code fixes
- Focus on performance and stability
- Clear communication throughout the process
- Experience with real production applications
Please contact me before placing an order so I can understand your issue and provide the best solution.
Platform:
Cross-platforms
App type:
Hybrid
Tools:
Bubble
•
Flutterflow
•
Expo
•
Android Studio
•
Xcode
•
Supabase
My Portfolio
FAQ
What types of bugs can you fix?
I can fix crashes, UI issues, API errors, Firebase problems, performance issues, and general app malfunctions in both mobile and web applications.
Can you fix both mobile and web apps?
Yes, I work with both mobile apps (React Native, Flutter) and web applications (React, Next.js, Node.js).
What do you need to start?
I need a clear description of the issue, error messages (if any), screenshots, and access to the code or repository.
How fast can you fix my issue?
It depends on the complexity. Small issues can be fixed within hours, while more complex bugs may take 1–3 days.
Do you also optimize app performance?
Yes, I not only fix bugs but also improve app performance, stability, and responsiveness where needed.
Do you work with Firebase and APIs?
Yes, I can fix Firebase authentication, database issues, and REST API integration problems in your application.
Will the fixes be permanent or just temporary?
I focus on root-cause fixes, not temporary patches, ensuring your application remains stable and scalable.
Can you work on urgent or broken production apps?
Yes, I can help with urgent production issues and critical bugs that need immediate attention.
Reviews
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Recommend to a friend
- Service as described
Sort By
Most relevant
A anthonyclark76
United States
The provider, H M Hasnain, is a brilliant young man. Excellent service with amazingly positive attitude. And its all on Fiverr. Undoubtedly the best customer service I have ever experienced on a fast-track project! I'm at a loss for words to express how fantastic this experience was. Such an effortless...
Up to $50
Price
1 day
Duration
Helpful?
Reviews
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Recommend to a friend
- Service as described
Sort By
Most relevant
A anthonyclark76
United States
The provider, H M Hasnain, is a brilliant young man. Excellent service with amazingly positive attitude. And its all on Fiverr. Undoubtedly the best customer service I have ever experienced on a fast-track project! I'm at a loss for words to express how fantastic this experience was. Such an effortless...
Up to $50
Price
1 day
Duration
Helpful?
