Case studies
Projects told from start to finish
The challenge, what I decided and what changed. To see every project, including those without a case study, browse the archive.
All case studies
CDT Digital: opening a CD without setting foot in a branch
We built the entire product, from the full frontend to the integrations with the bank's core systems. It was the bank's best product three years in a row, the team won an award for it, and it's still in production exactly as we built it.
React · Next.js · NestJS · TypeScript · Azure DevOps
COP 2B+raised in the first two years (≈ USD 500K)Selling used tires like premium products
E-commerce for 7 Florida locations with tire-size search, a faceted catalog, 3D tread views, Stripe checkout and a sales dashboard with an AI chat that filters inventory in plain language.
Next.js · React · TypeScript · Tailwind · Three.js
CLS → 0down from 0.914, plus mobile LCP from 4.5 s to 3.2 s on the product pageA platform for millions of refunds
I built the new platform Refunds teams use to create, configure and track refund flows across countries. Today it processes millions of refunds.
React · TypeScript · Node.js · Go
Millionsof refunds processed by the platform todayThe developer behind an agency's campaigns
BBDO Mexico's website and its new Astro version, the Afrin and Tabcin sites for Bayer built from scratch in Drupal, Finamex's investor profile quiz, and webmaster and email work for BMW, all on campaign timelines.
Astro · GSAP · Drupal · React · Vite
6brands: Finamex, Bayer, San Rafael, BMW, FedEx and BBDO itselfSix years running Servientrega's web presence
Two migrations of the main portal, managing the IBM vendor, an ecosystem of 12 group websites, and getting "Ya Mismo" to the top of Google.
IBM WebSphere · WordPress · Joomla · Google Analytics · SEO
Top 3organic Google results for "ya mismo"Interfaces written in JSON
About 15 major improvements to an internal library that builds UIs from JSON files, including a pseudo-language to format data straight from the configuration.
React · TypeScript · JSON
~15major improvements to the internal UI libraryOne Christmas novena, eight brands
A mobile-first app for praying the novena, a Colombian Christmas prayer tradition, with each company's logo, colors and illustrations. It started as a template, and I rewrote it from Create React App to Vite.
React · Vite · React Router · Vercel
8companies, from Banco Caja Social to a pizzeria
