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I will fix bugs in your fastapi or python backend API
Jeferson Sousa
About this gig
Fix bugs in your FastAPI or Python backend API
Dealing with broken CRUD logic, API errors, or failed integrations? I help debug and fix Python backend issues with reliable and maintainable solutions.
What I can help you fix:
- FastAPI errors and broken endpoints
- Error 500 and API response issues
- Broken CRUD operations
- SQLAlchemy and database bugs
- JWT/Auth problems
- CORS and async issues
- Docker environment problems
- Webhook and API integration errors
- Stripe, OpenAI, Discord, Telegram, and WhatsApp integrations
- Timeout and request handling issues
What you get:
- Backend debugging and troubleshooting
- Clean and reliable fixes
- Consistent API behavior
- Clear communication during the project
This gig is focused on backend bug fixing and small backend improvements only.
Not for full application development or large-scale architecture work.
IMPORTANT: Please message me before ordering with:
- Error description
- Logs or stack trace
- Git repository access
- Steps to reproduce the issue
Get to know Jeferson Sousa
Jeferson Sousa
Backend Developer: APIs, Automation e Integrations
- FromBrazil
- Member sinceFeb 2026
- Avg. response time1 hour
Languages
Portuguese, English
I help build and stabilize Python backends with reliable APIs and clean structure.
I work on real backend tasks like CRUD endpoints, database integration, and fixing broken API behavior.
• Build and improve FastAPI and Django endpoints
• Fix API bugs and inconsistent responses
• Set up Docker and CI/CD (GitHub Actions)
• Integrate external services (payments, WhatsApp, Discord, Telegram)
• Improve performance and reliability
• Add tests to prevent regressions
Focus: clean CRUD logic, consistent API responses, and maintainable code.
FAQ
What do you need to start fixing my bug?
I need: * A clear error description * Logs or stack trace * Access to your source code or project files * Steps to reproduce the issue Providing these details helps speed up debugging and avoid unnecessary delays.
Which Python frameworks do you support?
I specialize in FastAPI and Python backend APIs. I also work with: * SQLAlchemy * JWT/Auth systems * Docker environments * API integrations * Webhooks and async issues If your project uses a very specific library or legacy setup, please contact me before ordering.
Can you ensure the bug won't come back?
Yes, for small and controlled fixes. When possible, I prefer testing changes in a development or staging environment first to reduce risks and avoid unexpected issues in production.
Do you fix bugs in live production environments?
Basic bug fixes focus on resolving the immediate issue. If you also want regression prevention, you can select the "Automated Testing" extra. I can add Pytest or Unittest coverage for the affected backend logic when applicable.
What if the bug is more complex than expected?
I fix issues in your backend logic and integrations. If the problem comes from an external service outage (Stripe, AWS, etc.), I can identify the cause, but I cannot resolve provider-side issues.
