Esteban Ortiz Restrepo

I’m an AI Developer who enjoys building full-stack solutions that integrate LLMs, agents, and RAG systems. I’m proactive, curious, and I like to move fast while learning along the way.

I develop full-stack solutions that integrate AI tools and build features quickly from backend to frontend. I focus on shipping with FastAPI, Next.js, and LLM integrations tailored to business needs, working collaboratively and iterating as requirements evolve.

Through my projects, I’ve built production-minded AI apps: a multi-agent RAG system for Colombian legal queries with source grounding via Pinecone and voice services via ElevenLabs; an astronomical scientific analysis assistant with OCR, semantic search, and real-time voice; and an AI news platform with agent-based auto-summarization plus daily email digests.

I also contribute to open-source, including a local-first personal finance agent for Colombia that runs entirely on-device with Ollama (no cloud, no subscriptions), uses OCR for receipts, and brings insights with a multi-agent LangGraph architecture. I’m driven to turn AI capabilities into dependable, usable systems that people can trust.