I will build or fix a fastapi rest API with postgresql


About this gig
I will build, improve, or fix a Python backend using FastAPI and PostgreSQL.
I can help with REST API development, CRUD endpoints, authentication, JWT/RBAC, database integration, validation, bug fixing, testing, and backend improvements.
I work with Python, FastAPI, PostgreSQL, SQLAlchemy, Alembic, Docker, Git, and pytest.
Depending on the package, I can fix a small backend issue, create or improve API endpoints, or build a complete backend module with database logic and tests.
You will receive clean, maintainable source code and clear API structure.
Please message me before ordering if your project has a large or complex scope. I can review your requirements and recommend the most suitable package or prepare a custom offer.
Get to know Nikita
Python Backend Developer FastAPI, PostgreSQL, REST APIs
- FromUkraine
- Member sinceSep 2026
- Avg. response time1 hour
Languages
English, Ukrainian, Russian
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FAQ
Can you work with an existing FastAPI project?
Yes. I can review an existing FastAPI codebase, fix bugs, add endpoints, improve database logic, authentication, validation, and automated tests.
Can you build a FastAPI backend from scratch?
Yes. For larger projects, please contact me first so I can review the requirements and prepare the correct scope and custom offer.
Which database do you work with?
I mainly work with PostgreSQL using SQLAlchemy and Alembic migrations.
Do you provide source code?
Yes. Source code is included in every package.

