About

Over 20 years, one continuous thread: turning visual work into systems that hold.

Guilherme Negreiros

The trajectory

I started in 1997 designing print ads and logos in Brazil. By 2001, I was building websites by hand — HTML, CSS, one client at a time. Over two decades, that same instinct — build something that works, then figure out how to make it hold — carried me from graphic design, to web design, to UI, to UX, to what I do now: designing the systems and governance that keep design decisions consistent at scale.

It wasn't a pivot. Every step used what the last one taught me.

  1. Graphic design
  2. Web & UI
  3. UX Design
  4. Design Systems

What "systems builder" actually means

I don't think of myself as someone who designs screens — I design the infrastructure that makes screens consistent, explainable, and durable over time: tokens, component architecture, decision governance, and the workflows that connect design to development. That's what colleagues have consistently pointed to when describing how I work — not as a designer producing artifacts, but as someone building the systems that let a team produce consistently, without reinventing the same decisions over and over.

Outside the systems

Trois-Rivières, Québec. Portuguese, French, and English. When I'm not working on design systems, I play drums at my church — a different kind of discipline: showing up, staying in time with other people, and trusting a structure you didn't build alone.

Guilherme playing drums at his church