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Esteban Ortiz RestrepoER
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Esteban Ortiz Restrepo

@estebanortizrestrepo

AI developer building full-stack LLM, RAG, and multi-agent solutions that ship fast.

Colombia
Message

What I'm looking for

I’m looking for a collaborative team where I can ship AI features end-to-end, integrate LLMs with RAG and multi-agent workflows, and iterate quickly with real business impact.

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.

Experience

Work history, roles, and key accomplishments

AS
Current

AI Developer

Alewan Technology Sas

Jan 2026 - Present (4 months)

Developed full-stack solutions integrating AI tools, shipping features quickly from backend to frontend. Built and iterated LLM-enabled capabilities using FastAPI and Next.js to match business needs.

Education

Degrees, certifications, and relevant coursework

UP

Universidad Tecnológica de Pereira

Bachelor of Science, Software Engineering

2023 -

Studying Software Engineering, with a growing focus on practical AI applications including LLMs, agents, and RAG systems.

SA

SENA (Servicio Nacional de Aprendizaje)

Technical Degree, Commercial Consulting

2021 - 2022

Completed a Technical Degree in Commercial Consulting.

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