Now, October 2026: relaunching Freem with Axel, its grocery agent, and leading technical delivery at a mining exploration company in Santiago, Chile.
Relaunch in progress
A grocery shopping platform for Chile, run by Axel, a multi-agent assistant. It plans the week's meals, compares prices across the big supermarket chains and, when they don't carry something, goes looking in smaller independent stores, then carries out the purchase. Freem first launched in 2014 as a coupon site; this is its second life.
What it taught me
Exact product names and descriptive requests need different search blends. Exact names lean on keyword search, descriptions lean on vectors, and the weights only change when the eval suite says so.
LangGraph, FastAPI, PostgreSQL with pgvector, React, GCP Cloud Run
Open source
The setup I build with every day: permission tiers, guard hooks that fail closed, review agents and spec-driven development for Claude Code, with tests for every guard.
What it taught me
A blanket deny on rm -rf blocked eleven legitimate commands in three weeks and zero dangerous ones. Guards have to be precise, or people switch them off. Read the note
Python, pytest, GitHub Actions
Live at nearby.cl
A map of the bank discounts you can use near where you are in Chile, kept up to date by scrapers that run on a schedule.
What it taught me
CI is a single script that runs the same way on my machine and on GitHub. A pull request only opens after it passes locally, which is how I stopped burning CI minutes.
Next.js, TypeScript, MapLibre, Supabase with PostGIS, Playwright
Live at getunit.app
A personal finance app to keep track of your money in one place. You can use it on the web or download it from the App Store.
React, Expo / React Native, Firebase
Short write-ups of what I learn building with agents. New notes most weeks.
A rule in CLAUDE.md is a suggestion. A hook that exits with code 2 is a wall. But a wall in the wrong place gets torn down, so it has to be precise.
Agents write confident diagnoses. Twelve of mine turned out to be false once someone opened the file. Checking once per session was not enough; it has to be claim by claim.
My roots are in Iquique, in Chile's far north. I spent fourteen years building data and software systems for the copper mining industry before moving into AI products. The column below works like a drill core sample: the most recent work is at the top, and the longer I stayed somewhere, the thicker the layer.
2025 to present
Technical Lead, Transformation & Technology
I joined to build analytics and was promoted after nine months to lead the technical side of the area. We build internal software end to end: an LLM-powered intake for new initiatives, an ML model that predicts drilling rates, and a team that now works agent-first.
2025
AI Engineer
Six months as an independent AI engineer, taking proofs of concept to production for corporate clients. It is also when I started building Freem's agent.
2021 to 2025
Data & Systems Integration Engineer
Four years getting mine, plant, geoscience, lab and planning systems to share their data, as the technical counterpart to vendors like Caterpillar and Orica and to the corporate team in Canada.
2020 to 2021
Full-Stack Engineer
Nine months on the engineering team of a real estate investment startup. I moved the back office to microservices on AWS, brought in typed code and CI/CD so changes could ship safely, and worked with sales and operations to turn their day-to-day needs into features.
2011 to 2020
Data Analysis & Process Optimization Lead
Nine years at a copper mine in the Tarapacá desert, where I built the site's production reporting software and predictive models for copper cathode quality.
I started as an informatics technician at Universidad Arturo Prat in Iquique and went on to two years of computer engineering at INACAP. Later, while already working in mining, I earned a degree in risk prevention engineering, also at Universidad Arturo Prat. Data is what brought me back to computing: a big data diploma at Universidad Católica, MIT's Machine Learning Professional Program, an applied statistics diploma at Universidad de Concepción, and a diploma and a Master's in Data Science at Universidad Adolfo Ibáñez. Most recently, a diploma in IT project management at Universidad Católica.
Send me a message on LinkedIn. I work on Chilean time (UTC-3), which overlaps most of the US working day.