Full-Stack Developer and Technical Consultant based in Lviv, Ukraine. I build modern web applications with Next.js, FastAPI, and PostgreSQL, and actively integrate AI into my development workflow — from healthcare agents and neuroscience simulation platforms to blockchain integrations and enterprise automation tools. I handle the full project lifecycle, from estimation to cloud deployment.
Feel free to reach out via Telegram: @kostelnyj
| Frontend | Backend | AI / LLM | DevOps |
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