Lev Brelovskiy

Data Scientist / ML Engineer

Building production ML systems for document analysis — OCR, NLP, and Document AI. End-to-end pipelines from model training to FastAPI services and Docker deployment. 3+ years in ML, 6+ years in Python.

Open to relocation Remote OK Requires work permit English: B2

Projects

Knowledge Graph QA System (GraphRAG) 2026

Parsing structured data into Neo4j graph database, then building a GraphRAG web UI where users ask questions in natural language — an LLM generates Cypher queries and returns answers grounded in the knowledge graph.

212k nodes 899k edges FastAPI Docker LLM

github.com/Golden-dreamer/animeGraphRAG →

Railway Segmentation Oct 2023

Railway track segmentation using U-Net. Dataset of 89 labeled images expanded with augmentation to 984. Achieved IoU 0.80 on the test set.

U-Net IoU 0.80 PyTorch OpenCV

github.com/Golden-dreamer/railway-segmentation →

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