Product Designer specializing in Design Systems
I own design systems end to end, from design tokens and component architecture to governance. I also build the tools that ship them, with code and AI.

Senior Product Designer
A design system built end to end and adopted by 5 designers and around 40 developers. 611 tokens, 143 components, and AI agents that keep design and code in sync.
via Môre
A global token foundation built under design libraries already in use. 1,139 tokens across 7 brands on web and 4 on mobile, with every brand carrying the same tokens under the same names.
via Rethink
A design system extracted from real flows: pilot journeys redesigned, approved with stakeholders, then turned into tokens and components. 59 components, 443 variants, 224 tokens.
Chrome Web Store
A browser extension that audits any website's design: design tokens, color, typography, grid, spacing, and WCAG accessibility. Conceived, designed, and built end to end.
atomicolors.com
A color scale and palette generator for interfaces and design systems. Self-built, from design to code.
Figma Community
A Figma plugin that preserves design token context in AI-assisted design-to-code workflows.
radardoscoop.com
A Brazilian site that checks supplement prices every day and tells a real discount from a fake one. Bot, site and data pipeline, built end to end.
GitHub
The foundation and Claude Code skills this site was built with, turned into a free kit that interviews you and builds your portfolio with you.
Design tokens, component architecture, and governance. I build systems teams actually adopt, from primitives to Design Ops.
User flows, prototypes, and interface design. End to end UX/UI, grounded in research and usability.
A Computer Science background that lets me speak the developers' language, own the design-to-code handoff, and prototype in real code.
I build tools, agents, and automations that accelerate design work, without waiting on engineering.
I'm Marcel, a Product Designer specialized in Design Systems, with 13+ years in tech and a Computer Science degree. I build the technical foundation that lets design and engineering move fast together.
Let's talk. Open to Design Systems and Product Design roles. The fastest way to reach me is email or LinkedIn.