I'm João. I build data systems.
Based in Hortolândia, a town in São Paulo state just east of Campinas. I study Análise e Desenvolvimento de Sistemas at UNASP and work as a Digital Solutions Intern at Instituto Educathon. The five systems on this website are all in production. Each one started as a real problem someone needed solved.
My father spent years on a factory floor and always pushed me toward tech — he could fix anything electronic, and I inherited the curiosity. I learned English from YouTube, mostly computer building videos. Got into programming through game development, realized it wasn't the right fit yet, and finished high school with a technician degree in IT and an international diploma through Griggs University. Data engineering followed naturally — it sits at the intersection of systems I can see running and problems that actually need solving. I've since gone deep on the fundamentals: data modeling, stream processing, warehouse architecture, applied ML. The certifications and projects on this site are the evidence.
I'm looking for a role in Europe — the Netherlands in particular, though the right team matters more than the postcode. I want somewhere that treats data infrastructure as engineering and has real problems to work on. I have enough theoretical foundation. What I need now is the environment to use it properly, alongside engineers who will push back when I'm wrong.
That's most of it. The rest is in the work.
Background
Built the Factory Data Platform as a proof of concept — modeling what the factory's data infrastructure could look like. Lakehouse, real-time Kafka monitor, Platform API with dependency inversion. The B2B Pipeline: 86 businesses processed, 34% contact rate on first run. Represented Educathon at the Taiwan Trade Mission to Latin America 2025 (TAITRA, São Paulo). Also delivered a comparative ERP analysis — 834 lines of Python, six analysis pages, four verified PDFs — that changed a client's procurement decision.
Built and shipped a working multi-agent incident response system on IBM watsonX Orchestrate. Agents handle real routing decisions — not a demo workflow. The trophy is on my desk, slightly crooked.
Certifications across data engineering, AI, cloud, and enterprise software. Books on systems design and warehouse architecture. Still going.
Graduated with a technician degree in IT and an international diploma through Griggs University. Shipped the first production systems while finishing the last year.
Certifications · 18 issued
How I work
Independent contractor or direct employee — whatever structure works for the role and the company.
Brazil, UTC−3. Strong overlap with EU business hours. I shift when something is urgent — not as a default.
Remote-first for now. Open to the right opportunity when the timing makes sense.
English fluent, Portuguese native. ADRs and READMEs ship with every project. Async-first.
Off the clock
Becoming Steve Jobs — Brent Schlender. On how someone actually becomes good at something, not the mythology version.
Exploring agentic development. Claude skills, MCP workflows, Cursor — what the actual development cycle looks like when AI is in the loop properly.
Star Wars: Andor, Season 2. Does what Star Wars almost never does — treats its audience as adults. Real political tension, characters carrying the weight of their choices, and a sense that war has actual consequences for actual people. The deinfantilization of a franchise I'd mostly given up on.
IBM Enterprise Data Science in Practice. Working through it alongside the cert track.
Basketball, gym, cooking, good music. In roughly that order.
A custom digital gauge cluster for my car. Reference points: the Lexus LFA's motorized needle sweep on startup and the Toyota Aristo 2000's analog clock-face proportions. The goal is screens that feel like instruments — not a tablet glued to the dashboard. Still in the planning stage but the aesthetic direction is locked.