Building this portfolio
AI made options cheap; my job was choosing. How I ran a team of design agents.
00 — manifesto
Designing products that work for people and business.
I combine user research, data-driven experimentation and strategic design thinking to create digital experiences that are both intuitive and effective.
01 — case studies
work I’ve shipped
Four projects from Fotocasa and Adevinta: a profile built from research, a design system for two brands, a year of login experiments, and a tool that became a top organic entry point.
User Profile
Fotocasa’s first user profile: a three-step contact profile that tells advertisers who is writing, shaped by two rounds of research.
View case study
Panot Design System
One design system for Fotocasa and Habitaclia on web, iOS and Android: from nine files to one, with brand and theme as two switches.
View case study
Login
A year of research and A/B tests on Fotocasa’s login: where we ask people to sign in, and how easy it is to get in.
View case study
Fotocasa: Online Real Estate Valuation Tool + Sell with agency
Led the design of a free valuation tool that became a top organic entry point for Fotocasa, generating 40,000+ monthly visits and high-quality leads.
View case study
02 — side projects
Work for fun
Things I built because I couldn’t stop thinking about them. No client, no brief, just a problem I wanted to solve.
SuperManager ACB tracker
The ACB publishes every stat but draws no conclusions. A personal tool that turns them into line-up calls for me and my fantasy league.
Joventut de Badalona App
A fan’s concept: the men’s, women’s and wheelchair teams’ fixtures in one calendar, one tap from a ticket.
03 — testimonials
what people say
“I have been lucky enough to work with Carlos at Adevinta and at Interactius, and I can say with total certainty that he is an exceptional professional in the UX field. He has always shown commitment and passion for his work, consistently bringing creative and effective solutions.
One of Carlos’s greatest strengths is his ability to work as part of a team. He always knows how to foster an environment of trust and collaboration, making every team member feel comfortable sharing ideas and contributing their perspective.
I wholeheartedly recommend Carlos for any UX project.”