I don't sleep on questions.

I'm Matheus Sá. Designer and founder of Oroz and Sincera, and Head of Product and UX at CodingIT. This is where I document what I build, what I test and what I'm learning.

My story mathevssa@gmail.com

Now

updated Oct 2026

Moving back from Buenos Aires to Brazil.
Testing Atlas, my product documentation methodology, across three companies.
Preparing to do an MBA in China.

Notes

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NoteWhen good taste becomes a commodityWith AI, anyone can get a beautiful interface. What still separates great products from forgettable ones is structured UX thinking.Oct 2026
NoteMy AI-first workflow, from brief to interfaceHow I use Claude, Claude Code and Lovable to shorten the path from idea to screen.Coming soon
Note · AtlasWhat does it mean to have a methodology?First notes on turning Atlas into a method, without knowing yet how deep to go or how simple to keep it.Coming soon
NoteWhy I'm looking at ChinaTechnology, business and a political model of its own: what I see coming from there and why I want to study there.Coming soon

Projects

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