Sebastian López

AI Engineer

I build AI that’s actually useful, not just impressive.

Today I build AI tools for NGOs, cooperatives and small associations: automating workflows, giving access to localized knowledge through RAG, and letting people interact with technology by voice.

I’m open to AI Engineer and Agentic AI opportunities in Barcelona or with remote teams across Europe.

Projects

AI ARCHIVE

Migrant Archive — Narratives That Resist

Multimodal RAG agent over migrant narrative archives: YouTube ingestion, transcription, Gemini embeddings, ChromaDB vector search, LangChain tool-calling, FastAPI, voice input, and an embeddable multilingual chat widget.

View presentation
RAG • LangChain • REST API • Chat Agent