Oleksandr Kostianets

I’m an Intelligent Systems student and freelance developer focused on building AI-integrated backend systems. I built and deployed a company website from scratch, including backend logic and hosting setup, and created an order storage/processing system.

I also develop production Telegram bots that reduce manual work: one vision LLM workflow assesses damaged shoes from client photos and generates repair estimates, and another monitors shifts by scraping per user, diffing state against a Redis cache, and sending real-time notifications. I’m comfortable shipping async services with secure credential handling, encrypted secrets, CI/CD pipelines, and cloud deployments (AWS), and I enjoy turning RAG and ML research into practical tools through projects like a LangChain/ChromaDB health advisor and SQL-focused agentic systems.