Senior Product Designer, builder at heart — whatever it takes.

Hey, I'm Gustavo Padeiro and I work across B2B, e-commerce, and SaaS to turn messy problems into intuitive, scalable and profitable experiences by day, and I'm building AIEO, a growth startup for e-commerce, by night.

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Selected Work — 2022 / 2026

Some recent work

A small selection of projects where discovery, design systems, and data-informed decisions came together to move real business outcomes.

2025

Sinatra Promotions Guardian

How I led the design of a double-checking system to eliminate critical errors, implement a commercial governance layer, improve the auditing process and close the door to insider fraud in VTEX promotions and coupons. The e-commerce platform behind major LATAM retailers

35%
Of the enterprise teams at Sinatra adopted the feature in the first week: 0
Promotions with errors reaching production within 90 days of launch: 100%
Traceability of approvers across all active promotions.

2025

AI-Ready UI Infrastructure

At Sinatra, I led the transformation of our Design System into an AI-ready interface infrastructure built to support autonomous development workflows with Claude Code. This project explored the intersection of Product Design, systems thinking, and AI-assisted software development.

3x
Faster from product idea to high-fidelity interface, using real components and tokens: 4
Surfaces generated from one source: product UI, sales decks, proposals and campaign images: 8 wks
From a Figma-only design system to infrastructure Claude can read

2022

CAJU Design System

Back in 2022, Hortifruti Natural da Terra was in the process of creating a 100% digital culture and in the same period consistency problems were identified between the brand's digital products and services and the user experience, so the need arose to create a set of guidelines, components and patterns to solve this problem

200+
Visual inconsistencies replaced by a single source of truth: 40%
Reduction in handoff time after adoption of the system: 4
Products covered with tokens and themes from a single base

Open to Senior Product Designer roles · Remote & Brazil

Building thoughtful digital products with ambitious teams.

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