I will fix python bugs and debug fastapi rest API errors


About this gig
Is your Python script failing, or is your FastAPI endpoint returning an error? I can investigate the cause, fix the issue, and explain what changed.
I can help with:
- Python syntax, import, runtime, and logic errors
- FastAPI routes, validation, and HTTP errors
- REST API requests and third-party API integrations
- PostgreSQL or SQLAlchemy query issues
- Broken automation scripts and dependency problems
- Reproducible backend bugs and failing tests
What you receive:
- A targeted fix to the agreed issue
- Updated source code or a clear patch
- A short explanation of the root cause and solution
- Basic verification or a regression test when practical
My experience includes building Python/FastAPI applications such as ClientFlow and RetailOps BD, with PostgreSQL databases, authentication, and automated tests.
Packages cover a limited number of clearly defined issues, not an unlimited codebase rewrite. Major redesigns, full deployment, and new features require a custom quote.
Please message me with the error and project details before ordering if the scope is unclear.
Get to know Abrar
Full Stack and AI Developer
- FromBangladesh
- Member sinceApr 2021
- Avg. response time1 hour
Languages
Bengali, English
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FAQ
What information do you need to fix my Python bug?
Please share the relevant code, complete error message or traceback, expected behavior, actual behavior, and steps to reproduce the issue. Include your Python version and dependencies if possible.
Can you fix bugs in FastAPI, Flask, or Django applications?
Yes. I can investigate Python backend issues involving API endpoints, validation, authentication, database queries, and application logic. Please contact me first so I can assess the problem and confirm the appropriate package.
What if my code has more bugs than my package includes?
Each package covers a limited number of related, reproducible issues. If your project has additional bugs or requires major changes, I can review the scope and provide a custom offer before starting.
Will you explain what caused the bug and how you fixed it?
All packages include the corrected code. Standard and Premium also include a written explanation of the fix. Premium includes detailed comments around the corrected code where useful.
What if the problem cannot be reproduced or needs a major rewrite?
Please contact me before ordering. I'll review the available information and explain whether the issue fits an existing package. Major rewrites, new features, and complex infrastructure problems require a separate quote.

