Headshot of Felix Arntz

Hi I’m Felix!

Senior Software Engineer at Google / WordPress Core Committer

  • WordPress Core Committer
  • WordPress Performance Team Rep
  • WordPress Plugin Developer
  • Web Performance Analyst
  • Open Source CMS Enthusiast
  • Conference Speaker

Projects I have contributed to

I am directly contributing to the WordPress core platform, which powers millions of websites, in fact more than 40% of the entire web. I am also contributing to several popular WordPress plugins and other open-source projects that improve performance and transparency of the open web. Below you find some of the projects that I have contributed to.

WordPress Core
Performance Lab plugins for WordPress
Site Kit by Google plugin for WordPress
Yoast SEO plugin for WordPress
HTTP Archive custom metrics project
Gutenberg feature plugin
AMP plugin for WordPress
Easy Digital Downloads plugin for WordPress

Latest posts

Photo of a WordCamp Europe 2015 Banner outside the venue

10 Lessons from 10 Years of Contributing to WordPress Core

Category: , — Posted on
Sci-fi illustration of a JavaScript to TypeScript migration droid

Migrating Your JavaScript Codebase to TypeScript with Cline & Gemini

Category: , , — Posted on
Settings section of the View Transitions plugin for WordPress

Introducing the View Transitions Plugin for WordPress

Category: , , — Posted on

WordPress core contributions

I have been a WordPress Core Contributor since version 4.3 which was released in August 2015. I’m currently a component maintainer of the Multisite component and the REST API component, but regularly work in other areas as well. With WordPress version 4.6 I was recognized as a noteworthy contributor for the first time, and since November 2016 I have been a Core Committer.

More recently, I was the first Performance Lead as part of the WordPress 6.2 release squad, the Co-Performance Lead for the WordPress 6.3 release, and later the Performance Lead for the WordPress 6.8 release. I’m currently mostly involved in the new WordPress AI Team, of which I am a founding member and initial co-Team Rep.

Over the course of time I have worked on tons of tickets and made 301 commits. Working on WordPress Core and other open-source projects is a high priority for me, so I ensure I have sponsored or personal time available to dedicate to it.

Felix Arntz at Google Mountain View