Available for new projects

Hi, I'm Matias.

Frontend & WordPress Developer · Co-founder at De una

I was born in Argentina and I live in Spain. For over 12 years I've been building websites, online stores and custom platforms, and I take care of the whole ride: the interface, the backend and the deploy. I co-founded two digital agencies, Urutienda and De una, and on my YouTube channel I share what I learn with over 21,000 people.

Portrait of Matias Coletta smiling

Carpi Coder 🇦🇷 → 🇪🇸

Spain, UTC+2

Working remotely with teams across Europe and Latin America.

+300

Projects delivered

+21.7K

YouTube subscribers

131 videos · 1.4M views

+12

Years writing code

Career

Where I work and worked

Full details on my LinkedIn profile.

DominioZero

Web design agency · Spain

Current role

  • Frontend & WordPress DeveloperCustom websites for clients in Spain

De una

Digital agency · Uruguay

Current role

  • Co-founderMy own agency, built from scratch
  • DeveloperI built the whole platform, from the ground up

Carpi Coder

Own project · Freelance and content

Current role

  • Educational content on YouTubeHTML, CSS and JS courses for +21K people
  • Private lessonsOne on one, until it finally clicks
  • Freelance projectsFrom the idea to the deploy, end to end

Urutienda

Digital agency · Uruguay

Current role

  • Co-founderFrom a project between friends to +500 clients
  • WordPress DeveloperOnline stores that sell every single day
  • Help Desk SupervisorThe one who picks up when something breaks

Coderhouse

Digital academy · Argentina

2022 — 2025

  • HTML, CSS and JavaScript TeacherEntire cohorts learning to build for the web
  • Tutor CoordinatorLooking after the team that looks after the students
  • HTML, CSS, JS and React TutorReviewing assignments and unblocking people

Su Web Express

Digital agency · Argentina

2014 — 2022

  • Project LeaderTurning client requests into actual tasks
  • Frontend DeveloperEight years building a bit of everything

Skills

What I work with

Frontend as the core, backend when the project calls for it, and custom WordPress.

Frontend

This is what I do every day since 2014: accessible, fast and maintainable interfaces.

12 years

Core

  • HTML5
  • CSS3
  • JavaScript
  • TypeScript

Frameworks

  • React
  • Astro
  • Next.js
  • Vue
  • Angular

Styling

  • SASS & SCSS
  • Tailwind
  • Bootstrap

Motion

  • GSAP
  • CSS animations

Tools

  • Figma
  • Adobe XD
  • Vite

Backend

Whatever the frontend needs to talk to.

  • PHP
  • MySQL
  • Node.js
  • Express
  • REST APIs
  • Firebase
  • Payment gateways
  • Transactional emails
  • Cron jobs
  • Nginx and VPS deployments

WordPress

Custom themes and plugins, never a template straight out of the box.

  • Custom themes
  • Custom plugins
  • WooCommerce
  • Gutenberg blocks
  • ACF
  • Elementor
  • Hooks and filters
  • WP-CLI and migrations
  • WPML and multilingual sites
  • Optimisation and caching
  • Mailchimp and Fluent Forms

How I work

Beyond the stack, this is what I bring to every project.

  • Accessibility
  • Responsive design
  • Git & GitHub
  • Testing with Jest
  • Code review
  • Mentoring juniors
  • Remote work

Contact

Shall we build something?

My inbox is always open for questions, projects or just to say hi. I'll get back to you as soon as I can.