AI Developer
Neurotech
Jul 2025 — PresentBuilt search, RAG, intent classification, and media monitoring for a 91,000-document state archive, with measured gains in retrieval and classification quality.
• Built hybrid search using BM25 (Elasticsearch), bge-m3 (Qdrant), reciprocal rank fusion, and a blend with Qwen3-Reranker-0.6B on vLLM. nDCG@10 rose from 0.465 with BM25 alone to 0.734 on a set of 50 queries and 5,500 judgments. • Built a LangGraph RAG assistant with streaming through FastAPI WebSocket, a short history of three turns, Kazakh-to-Russian translation, issai/Qolda responses with links, and fallback modes for failures.
