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I will debug dart flutter code, resolve build errors and fix bugs
Hanzla Sajid
5.0
5.0
About this gig
Stuck on a build error or facing unexpected crashes? Don't let bugs ruin your deployment!
As a Flutter & Dart Developer, I provide production-grade debugging, syntax fixing, and code optimization. From runtime exceptions to broken backend integrations, I deliver clean, refactored code with a guaranteed quick turnaround.
Services I Provide:
- Build & Compilation Fixes: Resolving compiler blocks, syntax errors, unclosed brackets, and punctuation issues.
- Runtime Errors & Logic: Fixing script crashes, type casting (_TypeError), and null safety exceptions.
- Firebase Backend Issues: Resolving Firestore rules, Auth blocks, and database parsing failures.
- UI & Layout Constraints: Eliminating viewport overflows (RenderFlex) with fluid, responsive sizing.
- REST API & JSON: Correcting data-flow errors and dynamic map parsing in third-party API integrations.
️ Check my portfolio for case studies on code optimization, null-safety mapping, and responsive testing!
Why Choose Me?
- Clean, linter-compliant code
- Production-ready & fully tested
- Fast turnaround & quick diagnostics
- Transparent communication & documentation
Please message me with your error logs or screenshots before placing an order. Let's ma
Get to know Hanzla Sajid
Hanzla Sajid
Flutter App Developer
- FromPakistan
- Member sinceJun 2026
- Avg. response time1 hour
- Last delivery5 days
Languages
Urdu, English
I'm Hanzla Sajid, a Flutter Developer from Gujranwala,
Pakistan. I build high-performance cross-platform mobile
apps for Android and iOS using Flutter and Firebase.
I specialize in real-time apps, e-commerce apps, Firebase
integration, clean UI/UX, and REST API integration.
Let's build something amazing together!
FAQ
What information do you need from me to fix the bug?
Please share your project files (or GitHub repo access), a clear description of the issue, and any error logs or screenshots you have. This helps me identify and fix the bug faster.
Do you fix bugs in Flutter apps only, or other platforms too?
My core expertise is Flutter and Dart. Along with that, I can also debug and fix issues in other backend technologies like Node.js, NestJS, PHP, and similar platforms, so I'm not limited to Flutter-only projects.
How long will it take to fix my bug?
It depends on the complexity of the issue. Simple bugs are usually fixed within 24 hours, while more complex issues may take 2-3 days. I'll give you an accurate timeline after reviewing your code.
What if the bug isn't fully fixed after delivery?
I offer revisions to make sure the issue is completely resolved before you mark the order as complete. Your satisfaction with the fix is my priority.
Do I need to share my entire project, or just the affected file?
Ideally, share the full project (or repo access) since bugs are often connected to other parts of the code. If that's not possible, share the affected files along with enough context for me to understand the app structure.
Reviews
1 reviews for this Gig
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Rating Breakdown
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- Quality of delivery
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A alambodlah
United Kingdom
Hanzla delivered excellent work! Fixed all Flutter bugs quickly and efficiently. Clean code, great communication, and fast delivery. Highly recommended!
Up to $50
Price
1 day
Duration
Helpful?
Reviews
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
A alambodlah
United Kingdom
Hanzla delivered excellent work! Fixed all Flutter bugs quickly and efficiently. Clean code, great communication, and fast delivery. Highly recommended!
Up to $50
Price
1 day
Duration
Helpful?
