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I will fix python fastapi bugs and backend API errors
Mohammad Usama
About this gig
Having a Python, FastAPI, or backend API problem that is blocking your project?
I will diagnose and fix clearly scoped Python and FastAPI bugs, backend API errors, validation issues, database problems, and REST API behavior.
I can help with:
- Python bug fixing and debugging
- FastAPI errors and broken endpoints
- REST API and backend API debugging
- Pydantic validation and request/response issues
- HTTP status code problems
- SQLite and database-related bugs
- CRUD endpoint issues
- API integration problems
- Testing and verification after the fix
- Clear documentation of the changes
My workflow is simple: reproduce the issue, identify the root cause, make the smallest appropriate fix, test the affected behavior, and explain what changed.
I work with Python, FastAPI, Pydantic, SQLite, REST APIs, Git/GitHub, Swagger/OpenAPI, and structured testing.
Please message me before ordering if your issue involves multiple systems, a large existing codebase, deployment infrastructure, or unclear scope. I can review the problem first and recommend the right package or a custom offer.
Get to know Mohammad Usama
Mohammad Usama
Python And AI Application Developer
- FromPakistan
- Member sinceMay 2018
Languages
Urdu, English
I’m a Python and AI application developer focused on practical, clearly scoped software work. I work with Python, FastAPI, REST APIs, Pydantic, SQLite, Git/GitHub, LLM integrations, debugging, testing, and technical documentation. I also build Android apps with Kotlin and Jetpack Compose. My projects include backend APIs and a React/FastAPI multi-agent prototype. I can help with API debugging, FastAPI fixes, AI-generated app issues, GitHub README documentation, small LLM integrations, and Kotlin/Android tasks. I value clear scope, reliable communication, and verified delivery.
My Portfolio
FAQ
What information do you need before starting?
Please send the error message or unexpected behavior, relevant code or repository access, steps to reproduce the issue, and what you expect the application or API to do.
Can you fix any Python or FastAPI project?
I focus on clearly scoped bugs, API issues, validation problems, CRUD behavior, database errors, and backend debugging. Large applications or multiple unrelated problems may require a custom offer.
Will you test the fix?
Yes. I verify the affected behavior after making the change and provide a short explanation of what was fixed.
Can you work with an AI-generated or vibe-coded backend?
Yes. I can review and debug Python or FastAPI code produced with AI coding tools, provided the issue and project scope are clearly defined.
What if I am not sure which package to choose?
Message me with the problem and relevant details before ordering. I can help determine whether it fits Basic, Standard, Premium, or needs a custom offer.
