Product & UX design
Research, flows, wireframes and prototypes — the unglamorous work that makes the pretty screens actually correct.
César Martins Lima
Sheet 01/04 — Identity
Lisbon 38.7223° N · 9.1393° W
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Open to work
Portfolio — Edition 2026
Fig. 01 — Subject
César
Lima
Designing design systems
UI/UX designer with 16+ years turning complex problems into interfaces people understand at a glance — research and wireframes through to pixel-perfect UI and the systems that keep it consistent.
ServicesProduct design · Systems · Front-end
SectorsBanking · Telecom · Health · Retail
EngagementFreelance · Contract · Full-time
Reply time1–2 days
16+Years designing
60+Shipped projects
12+Design systems
64Entries on file
§01
Three things,
Capabilities
Fig. 02
Three things,
done properly
CapabilitiesFig. 02
Design systems
Tokens, components and documentation that let a team ship consistently without asking a designer every time.
Front-end UI
I build what I design. Responsive, accessible, fast — handed over as working code, not a static file.
Companies I have worked with
Next step
Have something
Have something
that needs designing?
Freelance, contract or full-time. Share your idea and I'll turn it into a polished, intuitive product your users will love, designed to perform and built to last.