Yulia D.

I'm an AI/ML Engineer specializing in production-grade RAG systems and LLM orchestration. I build modular AI architectures with a focus on automated evaluation, observability, and real-world business impact — from intelligent HR bots to complex industry forecasting systems.What I Work With:Generative AI & LLMs: Expert in building RAG pipelines using Azure OpenAI (GPT-4o/5-mini), Gemini, and Llama.RAG & LLM Frameworks: Advanced implementation of LangChain, LangGraph, and LlamaIndex for multi-agent workflows and multi-stage retrieval.NLP & Vector Search: Expert in ChromaDB, PostgreSQL with pgvector, and Semantic Search strategies.Evaluation & Observability: Ensuring system quality using RAGAS for metrics (faithfulness, relevancy) and LangFuse/LangSmith for tracing and cost tracking.Deployment & Tools: Building scalable backends with FastAPI, interactive frontends with Streamlit/Gradio, and containerization via Docker.I have a strong mathematical foundation and a proven track record of delivering end-to-end solutions that achieve high accuracy (up to 95%) and significantly reduce manual research time.Whether you need a sophisticated chatbot, a document understanding system, or a production-ready RAG architecture — I’m ready to help you build it.