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I will fix your react python or fastapi bugs fast
Illia Black
About this gig
Need a bug fixed fast? I can investigate, fix, and test issues in React, TypeScript, Python, FastAPI, REST APIs, SQL, and web applications.
I work with both frontend and backend issues, including:
- React / TypeScript bugs
- Python / FastAPI backend issues
- REST API errors and integrations
- Database and SQL-related bugs
- Validation and business logic issues
- Broken application flows
With 4+ years of QA and software engineering experience, I approach bug fixing from both development and testing perspectives. I don't just patch the visible error I investigate the cause and validate the affected functionality after the fix.
You will receive clean source code, a tested solution, and clear communication throughout the project.
This Gig is designed for focused issues that need fast turnaround. For larger bugs or unclear scope, message me with the details before ordering so I can recommend the right package.
Get to know Illia Black
Illia Black
QA Engineer
- FromUkraine
- Member sinceSep 2026
Languages
Ukrainian, English
I’m a Software QA Engineer and developer with 4+ years of experience in web, backend, API, and telecom systems.
I specialize in bug fixing, small feature development, API integrations, test automation, and end-to-end validation.
My stack includes Python, FastAPI, React, TypeScript, Selenium, REST/SOAP APIs, Postman, SQL, Git, CI/CD, Linux, and Kafka.
I can help you fix bugs fast, build focused features, troubleshoot backend/API issues, automate tests, and validate your application thoroughly.
I focus on fast turnaround, clear communication, and tested solutions.
Other Software Development Services I Offer
FAQ
1. Can you start immediately?
Yes
2. What types of bugs can you fix?
I work with React, TypeScript, Python, FastAPI, REST APIs, SQL, integrations, validation, business logic, and frontend/backend application issues.
3. What do you need from me to start?
Please provide the source code or repository, bug description, steps to reproduce, expected behavior, relevant errors or logs, and setup instructions.
4. What if the bug is more complex than expected?
If the issue requires significantly more work than the selected package covers, I will explain the scope before proceeding with any additional work.
