Design isn’t taste. It’s chaos reduction.

Product Designer, fifteen years.

100+ sites shipped across agency, in-house, and product, with AI as the second pair of hands.

Every design call is still mine.

Alfonso Barreiro, Product Designer in Portland, Oregon.

Alfonso Barreiro, Product Designer, in an office.

Work

Five case studies. Three shipped and running. Two concepts that argue from evidence, not opinion.

Alfred: MSR foot-health assistant preview

Alfred · Men's Sole Revival · Live

A front door to the library, not a general AI chatbot.

Answers men's foot questions from the site's 40 guides only and cites the guide it used. Red flags stop the chat and point to a doctor. Live since September 28, at about half a cent an answer.

View case study
AIGA Portland: Portland Design Month 2026 preview

AIGA Portland · Volunteer · Live

The artist's brand shipped intact past Squarespace's defaults.

One Custom CSS file, scoped to the festival page, overrode Squarespace section by section. Built by a three-person volunteer web team: the Web Chair on final calls, a Web Designer, and me on the code.

View case study

Men's Sole Revival · Live

Pivoted from e-commerce to editorial in week 3.

Cost: the storefront I'd already designed. Diagnostic-first resource for men over 40, live since April. 86% of visitors finish the assessment.

View case study

Wayfarer · Concept

Built the trip planner around duration, not dates.

Homepage as an editorial cover. Discovery through a globe and curated cards.

View case study

Spotify · Concept

Three controls I keep wanting Spotify to add.

The shelf 600M+ Spotify users see daily, with no controls. Pin · Remove · Pause, grounded in 200+ user posts.

View case study