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I will develop your python fastapi API or react feature fast
Illia Black
About this gig
Need a feature built fast without sacrificing code quality?
I will develop a production-ready feature for your Python, FastAPI, React, or TypeScript application with a focus on clean implementation and fast delivery.
I can help with:
- Python / FastAPI backend development
- REST API endpoints and integrations
- React / TypeScript features
- Database logic and SQL
- Frontend-to-backend integration
- Authentication and business logic
- Third-party API integrations
- Fixes required as part of the implementation
- Testing and validation
I have 4+ years of software engineering and QA experience working with backend systems, APIs, databases, automation, and complex production flows. This means I don't just implement the feature I validate the complete flow and look for issues before delivery.
My focus is simple: clear scope, fast turnaround, working code.
Tech: Python, FastAPI, React, TypeScript, REST APIs, SQL, Git, Postman, Selenium.
Please message me before ordering if your task is complex. Send the requirements or repository details and I can quickly confirm 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. What do you need from me before starting?
Please send a clear description of the feature, expected behavior, tech stack, and relevant source code or repository access. API documentation or screenshots are also helpful.
2. Can you deliver within 24 hours?
Yes, for small and clearly defined tasks. Send me the requirements first and I will confirm whether 24-hour delivery is realistic.
3. What technologies do you work with?
I primarily work with Python, FastAPI, React, TypeScript, REST APIs, SQL, Git, and related web technologies.
4. Can you work with an existing codebase?
Yes. I can implement new functionality in an existing project, follow its architecture and coding conventions, and integrate the feature with existing APIs and databases.
5. Do you test the feature before delivery?
Yes. I validate the implemented functionality, API behavior, integrations, and relevant edge cases before delivery.
