Browse categories
Explore
Fiverr Pro
English
$
USD
I will fix python bugs, fastapi errors, and rest API issues
Karthikeya
About this gig
Are you facing Python bugs, FastAPI errors, or REST API problems? I can help you identify the root cause, fix the issue, and test the corrected functionality.
What I can fix:
- Python runtime errors and bugs
- FastAPI endpoint, routing, and validation issues
- REST API errors and incorrect responses
- JSON handling and API integration problems
- JWT authentication and authorization issues
- SQL query and database connectivity errors
- Exception handling and backend debugging
What you'll receive:
- A focused fix for the agreed issue
- Clean, readable code
- Basic testing of the corrected functionality
- A clear explanation of the fix
- Guidance on applying the changes
Why choose my service?
I'm a Software Engineer with experience in Python, backend development, REST APIs, SQL, authentication, and secure API development. I focus on understanding the root cause and delivering practical solutions within the agreed scope.
Before ordering:
Please message me with:
- A brief description of the issue
- The exact error message or traceback
- Relevant code or a repository link, with secrets removed
- The expected behavior
I'll review your requirements and confirm the scope and delivery time before you order.
Please note: Th
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know Karthikeya
Karthikeya
Software Engineer
- FromIndia
- Member sinceMay 2026
Languages
English
Hi! I'm a Software Engineer specializing in Python, FastAPI, and backend development.
I can help fix Python bugs, REST API errors, FastAPI endpoints, API integrations, JWT authentication issues, SQL queries, and database connectivity problems.
I focus on clean code, root-cause debugging, and testing within the agreed scope. I also have experience with Node.js, MongoDB, and secure API development.
Please message me before ordering so we can discuss your issue and confirm the scope and delivery time.
My Portfolio
FAQ
What do you need from me to fix a bug?
Please share the relevant code, error message or screenshot, expected behavior, and steps to reproduce the issue. Never share passwords, API keys, or other secrets.
Do you fix FastAPI and REST API errors?
Yes. I can help troubleshoot FastAPI endpoints, routing, request validation, response errors, authentication, and API integrations, depending on the scope.
Do you develop complete applications?
This Gig focuses on bug fixing and small, clearly defined backend changes. Larger features or complete applications may require a custom offer.
Can you fix any Python bug?
I will review the code and issue first to confirm whether it fits my skills and the selected package. Please message me before ordering.
Will you test the fix?
I will perform basic testing appropriate to the agreed scope. Please provide the steps or expected results needed to verify the correction.
