Product Designer · UX/UI · B2B

Designing products that work — and shipping them.

Guilherme Romero — 12+ years in UX/UI and Product Design. Now also building real products with AI.

Selected work

Santander Chargeback — Dashboard
UX Design

Santander Chargeback: Optimizing Disputes and Reducing Losses Santander Chargeback: Otimizando Disputas e Reduzindo Perdas

140 → 15 days · 63% loss reduction

Unified workflows and automations for dispute resolution across card networks in Mexico and Latin America.

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