Open to opportunities

Sergio gutiérrez

@sergiogutirrez2

Message

I build production AI systems for semantic search, forecasting, and large-scale product matching.

Mexico

Message

What I'm looking for

I'm looking to build production AI and machine learning systems with international teams, especially semantic search, RAG, embeddings, and large-scale data products. I value remote collaboration, strong engineering practices, and measurable business impact.

I've built production AI systems for Walmart México through Axity, including a semantic product-matching platform that compares millions of products against competitor catalogs. I fine-tuned a multilingual embedding model for Spanish product data, improving precision by 15% and recall by 20%, and built a Milvus-based ANN search service that cut matching time from over 30 hours to about 15 hours.

I've also delivered student-retention and shelf-stockout prediction models at Enki, sales forecasting and NLP pipelines for Walmart, and census data products at INEGI, where I led a five-person team and reduced a dissemination pipeline's processing time by 80%. My work spans Python, machine learning, RAG, vector databases, FastAPI, cloud deployment, and remote collaboration with international teams.

Experience

Work history, roles, and key accomplishments

Current

Advanced Data Scientist

Current

Axity

Aug 2023 - Present (3 years)

Built a production semantic product-matching system for Walmart Mexico, fine-tuned a multilingual embedding model improving precision by 15% and recall by 20%, and reduced processing time by 50% with a Milvus vector database.