Open to opportunities

Татьяна Папузина

@0005859

Message

I build production ML systems for recommendations, NLP, and LLM-powered products.

Serbia

Message

What I'm looking for

I'm looking to build production ML products where I can own data preparation, modeling, evaluation, inference, and backend integration across recommendations, NLP, and LLM/RAG workflows.

I've built production ML features for OQTACORE's Chat AI and Mellon AI Agent Platform, including RAG retrieval, conversational context, tool-calling workflows, transcript processing, and backend integrations with PostgreSQL and Redis.

I've also developed recommendation and personalization systems for multilingual content feeds, driving-exam preparation, and my own family scheduling product, using Python, FastAPI, ranking models, embeddings, and production feedback loops.

Experience

Work history, roles, and key accomplishments

ML Engineer / Python Backend Developer

OQTACORE

Apr 2025 - Feb 2026 (10 months)

Developed LLM-powered functionality for Chat AI and Mellon AI Agent Platform, including conversational context management, external LLM integrations, and asynchronous AI workloads. Built a RAG pipeline for retrieval over user and internal data, covering document preparation, embeddings, semantic retrieval, and reranking.