Vasyl Narbut
AI Software Engineer with 4 years of production experience building AI/LLM-powered products, Python backends, and agentic systems. Experienced in production AI agents with tool use, RAG, evaluation pipelines, and observability.
Experience
- AI Software Engineer · VisEngine Digital SolutionsBuilt and shipped a LangGraph AI assistant with 18 tools for property search, in-app actions, navigation, and video calls with sales reps. Built hybrid property search combining structured inventory queries with pgvector RAG over project documents for 5+ clients, integrated CRM lead workflows, and added LangSmith tracing and evaluation datasets for regression testing.
- Full Stack Developer · VisEngine Digital SolutionsBuilt production Next.js and FastAPI applications for real-estate companies across frontend, backend, databases, and deployment infrastructure. Developed a reusable route and travel-time system used across multiple property applications and reduced time to visible content by approximately 30% through progressive asset loading and an Apache2-to-Nginx migration.
- Full Stack Developer · FreelanceDelivered end-to-end e-commerce, automation, and web applications, including Stripe payment integrations and custom Python services. Built 30+ automation tools, bots, and Python applications for client business workflows.
Stack
AI Systems
- OpenAI API
- Anthropic API
- LangGraph
- LangSmith
- MCP
- RAG
- pgvector
- Vercel AI SDK
Backend
- Python
- FastAPI
- Pydantic
- asyncio
- SQLAlchemy
- Redis
- PostgreSQL
- Alembic
Cloud & DevOps
- GitLab CI/CD
- Docker
- AWS S3
- AWS Lambda
- Nginx
Frontend
- TypeScript
- React
- Next.js
About
I specialize in AI/LLM-powered products, Python backends, and agentic systems. My recent work includes a production LangGraph assistant with 18 tools, hybrid property search combining structured inventory with pgvector RAG, CRM workflows, and LangSmith tracing and evaluation.
My full-stack background spans production Next.js and FastAPI applications, databases, deployment infrastructure, performance work, e-commerce, and automation. I’m completing an online bachelor’s degree in Modelling and Data Science at Łódź University of Humanities and Economics (expected June 2028). I speak English at C1, Polish at B2, and Ukrainian natively.