Communication is probably the most important skill I have as a product designer.

I'm Juan. I was born in Colombia and now live in Prague. Long before I knew product design was a job, I was already making things for screens.

I design because I've always been obsessed with products.

The obsession came first. The job title came much later.

I coded a questionable (but functional) Desperate Housewives website when I was 12, entered BlackBerry and iPhone competitions, and designed my first iOS app at 17. Android came later.

I wasn't thinking about UX frameworks or design systems then. I was simply fascinated by products: how they worked, why some interactions felt intuitive, and how technology could create completely new behaviors. Eventually, that obsession became my profession.

Me as a kid at the family computer
A trip planner I built, with a map and a day by day itinerary
The same trip planner summarising a finished trip

I communicate because I grew up around media.

Long before it became my career, my grandfather brought the world of communication into our home.

I built on that legacy through youth radio, journalism at Canal Capital, and audience research at Dynamo Producciones. There I analysed HBO pilots, evaluated documentaries for The Guardian, and wrote script coverage for future Netflix series.

That analytical foundation evolved into visual storytelling. I have since worked with product marketing teams on digital campaigns and product design for Samsung, MINI Cooper, Longines, and Olive Young, with editorial features in Vogue, Harper's Bazaar, and ELLE. My personal photography has earned a Canon Latin America award and a placement in a national museum.

The greatest tool media gave me was not a list of accolades. It taught me how to listen, read a room, and translate complex stories into simple, impactful narratives.

A Samsung LED video wall installation
Apple Music artist page for Lalo Ebratt
Longines Mini DolceVita campaign post
A Vogue Czechoslovakia shoot, credited to me
Avianca en revista digital library, with the Prague issue among them
The Prague feature spread inside Avianca en revista

I think in journeys because I've spent years watching people use things.

Product design was the natural arena where my obsession with products and my background in media finally collided.

Today, my work spans mobile experience, product design, UX research, growth, experimentation, and design systems. I've designed for consumer and B2B products, moving smoothly between mobile interfaces, analytics dashboards, and AI tools.

Research became a natural extension of that curiosity: understanding not only what people tell us, but what they actually do. (Work I contributed to won a Red Dot Design Award for innovation design).

Red Dot winner 2021, the Air Device Light Series
A product library console, dense B2B surface
An itinerary builder with AI suggested activities
An Ironman triathlon coaching landing page
A mobile travel guide catalog with an assistant
The Hlinotéka ceramics studio site on desktopThe same site on a phone
A mobile training plan

I measure because I want to know what happened next.

Eventually, research led me deeper into data.

Quantitative and qualitative, not one or the other. Amplitude, BigQuery and GA4 on one side. Interviews, usability testing and diary studies on the other. I've owned analytics end to end: instrumentation, event taxonomy, reporting, experimentation, and personalization roadmaps.

I also build the plumbing research runs on. At GoodData I set up the participant recruitment flow and the research panel behind it, so studies ran with the right people rather than whoever replied first. I run the sessions too: discovery and alignment workshops that turn scattered opinions into a decision the team can act on.

For me, shipping isn't the finish line. I want to know whether people understood it. Where they dropped off. What changed. What didn't. And whether the thing we designed actually solved the problem we started with.

A GA4 overview: users, new users and average engagement time over three months
A daily metric trend line across a month
A research workshop board, columns of notes grouped by theme

I code because I wanted to understand what happens underneath.

The technical curiosity never went away.

Years after that first childhood website, I joined 42 specifically because I wanted to understand computer vision development. I spent a year and a half working in C, learning exactly what happens below the user interface.

I didn't do it to become an engineer. I did it because I wanted fewer black boxes.

My GitHub profile as a 42 cadet in Prague, with the C projects
C on a laptop screen

The shape

Product and mobile UX

Two-sided platforms, phones first, states and edge cases included.

Growth and monetization

Acquisition through to conversion: trials, activation, CRO, and tests that actually decide things.

AI product design

Retrieval, agents, and interfaces that admit what they cannot answer.

Build fluency

Figma to React and back, plus a year and a half of C.

The journey

Senior UX Growth Designer

GoodData

2023 to 2026 · Prague

  • UX across the surfaces around a B2B business intelligence and agentic analytics platform, rather than the product itself.
  • Growth and CRO: experimentation, GA4, Amplitude, BigQuery, Looker Studio.
  • Built two design systems adopted by three teams: component libraries, tokens, WCAG AA, handoff.
  • Sat inside engineering with a dotted line to marketing.

Owned

  • Website as a product: releases, IA, UX research
  • Documentation: releases and growth
  • Support portal
  • AI support assistant, portal and growth channels
  • UX research panel
  • Smart business application: weather forecasts against historical e-commerce data
  • Acquisition and activation email lifecycles
  • GTM: agentic AI, observability, product tours, the shift from BI to AI

Contributed to

  • Trial profiling
  • Onboarding
  • Growth AI initiatives: labs and feature permissions
  • Agentic AI surfaces: observability, context management, orchestration, agent builder, skills, memory

What I believe

Outside work

Where I started.

And I write.