o
ohrynchak

Oleksandr H.

@ohrynchak

Python Backend and API Specialist FastAPI, Django, Automation

Ukraine
English, Ukrainian
About me
Hi, I am Oleksandr, a Python Backend Engineer with a Master degree and experience in scalable apps. I specialize in high-performance REST APIs, event-driven microservices, clean full-stack web tools, and Python automation. What I offer: - Custom REST APIs via FastAPI and Django REST - Database setup with PostgreSQL, Redis, MongoDB - Async processing via RabbitMQ and Celery - Web scraping and Telegram bots - Docker containerization and Pytest I focus on clean code and reliable deployment. Feel free to message me!... Read more

Skills

o
ohrynchak
Oleksandr H.
Offline • 

See my services

API & Integrations
I will build a scalable python rest API using fastapi or django
From$10 / projectMore details

Work experience

Self_Employed

Python Developer

Self Employed • Full-time

Mar 2026 - Present • 6 mos

• Architected a distributed microservices social platform utilizing FastAPI for high-performance async operations and Django REST Framework for core business and relational logic. • Implemented a secure JWT authentication system with an active token blacklisting mechanism in Redis during token refresh and logout processes. • Designed an asynchronous password recovery workflow using RabbitMQ as a message broker where a FastAPI producer queues events for an independent background worker. • Developed an asynchronous email consumer that manages task states with MongoDB transactions and triggers AWS SES to dispatch secure system notifications. • Integrated AWS S3 cloud storage into the authentication service to securely upload and store user profile media files. • Managed complex SQL databases using PostgreSQL and MySQL, implementing One-to-Many and Many-to-Many relationships while containerizing the entire setup via Docker Compose.