Designing the tools
behind the stories
Marshall WeissMadrid & Washington, DC
I’m a senior product designer and developer working where design, journalism, and AI meet.
Currently at El Confidencial.
Also teaching at Universidad Europea.
Fully bilingual in English and Spanish.
Selected work
All workJarvis, El Confidencial’s CMS
I was the sole designer on the CMS that replaced a 15-year-old system for more than 200 journalists. It suggests related articles and checks style while they write.
The El Confidencial homepage
A front page organized by topic instead of by section, launched in June 2026 alongside the paper’s 25th-anniversary rebrand.
Subscription checkout
Reducing drop-off at the last step of El Confidencial's subscription funnel, inside the limits of an enterprise paywall platform.
Side projects
Things I build in my own time, mostly to learn how they work. Still rough around the edges.
AI Atlas (opens in a new tab)A map of the big debates in AI and who stands where. Still in progress.
Lapidarium (opens in a new tab)An encyclopedia of crystals and precious stones, 79 so far, each one rendered in 3D.
Four-track recorder (opens in a new tab)A browser version of the 1980s cassette four-track. Record, loop and layer.