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I will debug and optimize python backend fastapi django or flask queries
VKalek
Acerca de este Servicio
Your Python backend is broken and you don't have time to figure out why. Maybe a previous developer left you with a project that won't start, migrations that fail, or a 500 error you can't trace. I step in, read your code, find the actual root cause, and fix it no guessing, no rewrites you didn't ask for.
What I fix:
- Server won't start / crashes on boot
- Migration errors (Django ORM / Alembic)
- Broken serializers, views, routes (DRF, FastAPI, Flask)
- Dependency conflicts (requirements.txt, venv, Docker)
- Deployment failures (Gunicorn, Uvicorn, Docker, Render, Railway)
- Slow or hanging endpoints
How it works:
- Send me your repo (GitHub/GitLab/zip) and describe the error.
- I review it and confirm scope before you order (message me first for anything unusual).
- I fix it, test it runs, and send you a short report of what was wrong and what I changed.
I work with Django, DRF, FastAPI, Flask, PostgreSQL, MySQL, SQLite, Docker.
Conoce a VKalek
VKalek
Backend Developer
- DeUcrania
- Miembro desdejul 2026
Idiomas
Ucraniano, Ruso, Inglés
I am a hands-on backend developer specializing in high-stress debugging, system stabilization, and connecting chaotic APIs into clean production code. I specialize in jumping into messy codebases to find root causes of errors and building robust payment infrastructure and data pipelines.
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FAQ
Can you fix a bug without seeing the code first?
No — message me with the error and I'll tell you honestly if it's a quick fix or bigger job before you order.
Do you sign NDAs?
Yes, happy to sign a simple NDA before reviewing sensitive code.
