Volodymyr

VOLODYMYR HEDZ
Lublin, Poland | Open to relocation | Remote | [open contact info](look above in the "contact info" section)
[open contact info](look above in the "contact info" section) | https://github.com/Volodymyr262

SUMMARY
Backend-focused Python Developer specializing in building scalable SaaS APIs and high-performance systems.
Experienced in optimizing database queries, managing asynchronous background tasks with Celery/Redis, and
enforcing strict clean architecture. Dedicated to high code quality and maintainability through TDD . Proficient in Docker
and AWS for deploying robust backend solutions.

PROJECTS
Loyalty Platform API
A production-ready Multi-tenant SaaS API designed to manage loyalty programs, customer balances, and point
transactions. Built with a focus on scalability, security, and strict data isolation between organizations.

Stack: Django, DRF, PostgreSQL, Redis, Celery, Pytest, Factory Boy, Ruff, Docker, Nginx, AWS EC2, GitHub Actions
Live Demo: https://13.61.251.242.nip.io/api/docs/
GitHub: github.com/Volodymyr262/loyalty-platform

Code Quality: Achieved 95% test coverage using TDD/Pytest and enforced strict coding standards via Ruff,
ensuring high system stability and zero critical bugs.
CI/CD & DevOps:Set up a CI pipeline with linting and automated tests and CD pipeline to AWS via GitHub Actions,
reducing deployment time to under 2 minutes.
High Performance: Optimized API throughput using Redis for caching, while offloading heavy tasks to
asynchronous Celery workers.
Architecture & Security: Enforced Row-Level Security by overriding Django Managers to automatically filter
querysets based on tenant context, ensuring 100% data isolation.

JobBoard — Scalable Job Platform Backend
Stack: Django, DRF, PostgreSQL, Docker, Redis, Celery, Elasticsearch, Pytest
GitHub: github.com/Volodymyr262/JobBoard

Built a modular backend with clearly separated domain logic, improving maintainability and feature iteration speed.
Reduced database load by implementing Redis caching for frequently accessed endpoints.
Built a Celery‑based asynchronous pipeline handling email verification, password resets, and application status
notifications.
Containerized all services (Django, PostgreSQL, Redis, Celery, Elasticsearch) using Docker Compose to
streamline local development.
Developed a comprehensive test suite using Pytest to verify business logic and maintain system reliability.

TECHNICAL SKILLS

Languages: Python, HTML/CSS, SQL
Libraries / Frameworks: Django, Django REST Framework, Celery, Elasticsearch, Pytest, Factory Boy, Ruff
Infrastructure & DevOps: AWS (EC2), Docker, Docker Compose, Nginx, Linux, GitHub Actions, Git
Databases: PostgreSQL, MySQL, Redis

LANGUAGES
English - B2 Polish - B2 Ukranian - C1
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