Systems Architect · WordPress Specialist

I help teams build WordPress codebases that stay maintainable as they grow.

Scaling PHP and WordPress codebases. Currently Development Team Lead at Aprende Institute.

Picture of Andrés Villarreal

Building 
at scale

Currently leading a 10-engineer team at Aprende Institute. Previously DevOps Manager and Director of Technology at Rainmaker Digital Services, CTO at NiceThemes, plus freelance and consulting work for clients in the US and Europe.

Deep in the 
WordPress community

Co-founder of WordPress Argentina. Speaker at WordCamps, and a recurring voice at meetups in Buenos Aires and other cities since 2014.

Teacher 
and writer

I’ve taught programming and web development in major schools and universities, and I publish articles and talks on design patterns, clean code, and scalable workflows.

Currently

Just wrote a Part 3 to a series on accessible code I started twelve years ago (all three parts coming soon!) Republishing a batch of other decade-old posts alongside it. Recording new music and preparing for gigs and projects.

Selected talks

WordPress Meetup
Buenos Aires · 2026

Myths and Facts About Performance and User Experience

WordPress Meetup
Buenos Aires · 2024

Performance, Security and Stability: Best Practices Without Plugins

WordCamp
Montevideo 2018

How to Write Resilient Code

All talks ➔

Latest articles

9 Years Later, I’m Picking This Back Up
After roughly nine years away — new roles, a kid, a music career picking up, teaching jobs come and gone — this site is picking back up. Old English and Spanish articles are being reviewed, corrected, or retired, translated where useful, and republished with current dates alongside new writing, including talk notes turned into articles.
All articles ➔