TECHNICAL NOTES · ACTIVE PROJECT · LEARNING IN PUBLIC

I write to learn.
I build to understand.

A working notebook about applied AI, system design, data, and product engineering. I publish what I learn and show the artifacts I build along the way.

Start reading See the project
  • 10notes to read now
  • 01active public project
  • 02growing visual series

01 / LATEST NOTES

Start with an idea.

READING LIST 001
01
EVENT-DRIVEN · SYSTEM DESIGN · AZURE · BILINGUAL

Event-driven design in Azure: realtime chat, asynchronous ingestion, and durable truth

 02
HARNESS · AI · BILINGUAL

Harness engineering: making coding agents reliable

 03
POSTGRES · SYSTEM DESIGN · BILINGUAL

Postgres from the inside: pages, tuples, and MVCC

 04
AI SECURITY · AI · BILINGUAL

The agent that escaped the exam: understanding the OpenAI–Hugging Face incident

 05
RAG · AI · BILINGUAL

What a production RAG system actually needs

 06
DATABASES · SYSTEM DESIGN · BILINGUAL

Choosing a database: design from questions, not logos

 07
PYTHON · SYSTEM DESIGN · SPANISH

Concurrency vs. parallelism: how to choose and design the system

 08
AI · ARTICLE 01

Inside a transformer: from a token to the next token

 09
SYSTEM DESIGN · FOUNDATIONS

Building means choosing: an introduction to trade-offs

 010
DDIA · BOOK NOTES

Reliable, scalable, and maintainable applications

02 / ACTIVE PROJECT

One active build.
Evidence you can inspect.

AI Knowledge Platform is the only side project featured here: an active public build with source, tests, retrieval evaluation, and an explicit delivery state.

013 / 5 milestones accepted

APPLIED AI · RAG

AI Knowledge Platform

A document knowledge platform built in public, with verifiable ingestion, measured retrieval, grounded answers with citations, and observability as product surfaces.

  • Python
  • RAG
  • Product
Read the case study

03 / SERIES & GUIDES

Ideas that need
more than one post.

Longer learning paths that connect concepts, decisions, and implementation.

01In progress

AI · LEARNING IN PUBLIC

AI & Harnesses

How language models work, what has to be built around them to make a product, and which ideas survive contact with production.

Explore the series
02Visual guide

ARCHITECTURE · FOUNDATIONS

System Design

A visual guide to the decisions, trade-offs, and patterns behind systems designed to grow.

Open the guide

04 / ABOUT ME

The work is here.
The résumé is elsewhere.

I’m Matías, a senior full-stack engineer based in Argentina. If you want the professional timeline, current client work, toolbox, and résumé, they live in a separate section.

Go to About me

ARGENTINA · OPEN TO CONVERSATION

Have an idea
worth exploring?

Tell me about a system, an article, or a side project that would be interesting to think through together.

Send an email GitHub About me