Kostiantyn

Ivashchenko

I am backend developer position with over five years of experience building high-performance commercial systems, I specialize in developing robust APIs using FastAPI and Django, backed by a deep understanding of PostgreSQL, Redis, and RabbitMQ. My approach to backend development goes beyond just writing code; I focus on creating maintainable, "long-life" systems. I am a strong advocate for Clean Architecture and Hexagonal Architecture (Ports and Adapters), ensuring that business logic remains decoupled from external frameworks for maximum agility and testability. In my recent work, I have successfully: Designed and deployed containerized microservices using Docker and automated CI/CD pipelines (GitHub Actions). Built complex data-driven platforms, including agricultural marketplaces and commodity analytics warehouses involving heavy scraping and ML-ready data processing. Managed infrastructure on Hetzner or Azure cloud.