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I will do python fastapi bug fixing, flask error fix, rest API debugging
Waseem
About this gig
Stuck on a broken Python backend, failing REST API, or persistent framework error?
I specialize in fast, precise backend troubleshooting. Whether your application is throwing 500 server errors, CORS issues, or database query failures, I will fix Python bugs and get your FastAPI or Flask application back on track smoothly.
What I Fix & Debug:
- Framework Bugs: FastAPI bug fixing, Flask error fix, async routing issues.
- Authentication & CORS: Fix JWT authentication bug, permission, and header issues.
- Database Problems: PostgreSQL, SQLAlchemy, and MongoDB query & connection repairs.
- API Integrations: Fix broken third party API integration and webhook failures.
- Performance: Optimize slow Python API backend response time and refactor code.
Why Work With Me?
- Modern, clean, and production-ready Python code conventions.
- Clear root-cause explanations provided with every delivery.
- Complete confidentiality and secure code handling.
How It Works:
- Message me with your error logs, bug details, or repository access.
- We confirm the scope and pick the right package or custom offer.
- I perform deep REST API debugging, test the fix, and deliver clean code.
Message me now or place your order today!
Get to know Waseem
Waseem
Python Developer! FastAPI, REST APIs, Integrations and Automation
- FromPakistan
- Member sinceMay 2026
Languages
Urdu, English, Spanish
I’m Waseem Baksh, a Python developer specializing in FastAPI, Flask, REST APIs, API integrations, and business automation. I build secure, scalable backends, connect third-party platforms, fix Python errors, and automate repetitive business processes. Whether you need a custom API, backend solution, integration, debugging, or automation, I focus on clean code, reliable performance, and practical results. Let’s turn your technical requirements into a solution that works.
Other Software Development Services I Offer
FAQ
What information do you need to start fixing my backend error?
I need a brief description of the bug, steps to reproduce it, relevant error logs or screenshots, and access to your code repository or source files.
Can you help fix JWT authentication and CORS errors in FastAPI or Flask?
Yes! I frequently troubleshoot JWT authentication bugs, middleware configurations, header issues, and cross-origin resource sharing (CORS) blocks across FastAPI and Flask backends.
What if my issue involves a broken third-party API integration or database?
I handle database connection repairs, SQLAlchemy/MongoDB query issues, and API integration fixes. If your documentation is complex, feel free to send a message first for a tailored offer.
What if the bug turns out to be larger than anticipated?
If initial REST API debugging reveals deeper underlying system issues, I will notify you immediately before proceeding and provide a transparent Custom Offer.
