“The way the use-case scenarios are understood by Josue and the UX solutions (and the underlying frameworks) formulated demonstrate Josue's ability to cut through the problems leveraging his multi-disciplinary expertise. The formulation of Compass drew my attention, particularly.”
“I built ProteGO alongside Josué, and what stood out was how seamlessly he works with engineers — he designs in a way that's actually buildable, thinks in systems and states, and holds the user experience without slowing the team down. He speaks our language. I'd work with him again on anything where design and engineering have to move as one.”
“I've known Josué for twenty years, and what's never changed is how he thinks — he finds the human underneath any system and won't look away from the hard part of a problem. Long before “AI UX” was a title, he was the person I brought ideas to because he'd see the angle no one else did. He thinks like a founder and cares like a craftsman.”
Selected case studies
NuvAI — AI Lead Assistant for Human Agents
Three trust patterns — disclosure, pace, handoff — built solo, alongside a parallel discovery track with a senior UX partner.
Human-first UX for an AI that helps human real-estate agents manage and qualify leads — the disclosure gate, pacing controls, and human-handoff architecture that determine whether people can trust an AI acting on their behalf. Built on OpenAI + n8n; voice is an optional layer under evaluation, not the point.
Disclosure design · Pacing as respect · Handoff UX · EU AI Act-aware
Compass — Personal Orientation Layer
Fifteen scattered systems collapsed into one two-minute morning glance — shipped, and used every day.
An ADHD-first PWA that collapses fifteen scattered state surfaces into one two-minute morning glance. Built after an audit found an ecosystem that was individually healthy and structurally unable to notice its own failures — three of five scheduled processes had been silently dead for months.
Shipped & live · Hard 3-item cap · One next move · "Nothing needs you" as a success state
Access is not permission
The real governance file that runs my AI agents — made interactive so you can test the refusal yourself.
I gave AI agents the keys to my accounts, and wrote down what they weren't allowed to do before I did. This is that board, made interactive: set the levels yourself and watch the agent accept, hold, or refuse. Set “Send a DM” to green and it still refuses — because that function was never built.
Runs on the real autonomy file · Capability-absence over policy · Includes the flaw I found in my own system
ProteGO
Shipped to MVP for a real client — dashboard hierarchy and AR capture flow redesigned for a live citizen-science platform.
Dashboard hierarchy redesign, gamification legibility, and a 5-step AR camera capture flow for an AI-powered citizen science monitoring platform. Shipped to MVP. Full case study under NDA.
Shipped to MVP · European space-tech accelerator programme · Client under NDA
BaseLine
Designed around a real 2022 rail accident, validated against a structured framework — pilot-ready, not yet in front of users.
Explainable anomaly triage for rail maintenance engineers — closing the gap between when a track defect is detectable and when a human can act on it. Designed around the 2022 Adamuz accident. Full interactive prototype built in Figma Make.
Full interactive prototype · Figma Make · Rail safety
Fifteen more projects
Explorations, concept frameworks, systems I run daily, and earlier product work — one click away.
Human-science background. AI-native practice.
I study how people actually work — with systems, with each other, with technology — and then design clear, humane interfaces around what I find. My background runs anthropology, embodied facilitation, and audio production into a design and product practice that has been AI-native from the start.
I think in journeys, not screens. I keep ethics and user agency at the front as interfaces become AI-driven. US citizen · four languages (EN / ES / IT / PT). Based in Barcelona — available remotely, open to US and EU markets.
Full story →Fixed-scope engagements, ready to start
Two ways to begin — both fixed price, fixed timeline, async-friendly, and delivered as a written report you keep. If you're not sure which fits, book the intro call and I'll tell you honestly, including if the answer is neither. And both audits carry a plain guarantee: if the report doesn't give you at least three fixes worth shipping, you pay half. Prices are in US dollars and exclude any applicable taxes.
UX Audit — Critical Flow · $550
Five days. Pick the flow that matters most — onboarding, checkout, your AI copilot — and get a teardown of everywhere it leaks trust, with prioritized, implementable fixes. Chat, voice, and agent surfaces are home turf.
5 days · Written report + walkthrough call · Fixed price
UX Audit — Full Product · $850
The whole journey — heuristic review, friction map, and a ranked fix list your team can execute without me. Same audit, full-product scope: every screen, every state, one week.
1 week · Written report + walkthrough call · Fixed price