Sybre Waaijer (@cybr) – WordPress user profile

Bio

I started in 2014 with WordPress. I manage WordPress (Multisite) hosting networks, I contribute to WordPress Core, I design custom themes, and I create free SEO plugins.

With everything I do, I focus on performance, scalability, security, privacy by design, and I aim for seamless integrations.

My goal is to prove that you can contribute full-time to WordPress without exploiting its users. I believe I already achieved that; people just haven’t noticed it yet.

Interests

Nature, Community, DevOps, SecOps, Indie, Music, Privacy

WordPress Origin Story

In 2014, I created a community website using bbPress. Everything was slow and sluggish, and as a perfectionist who’s overambitious, I quickly learned how to resolve that. This endeavor led me to start a hosting company, join WPMUdev’s community, and eventually develop custom solutions, which ultimately kicked off my full-time WordPress plugin development career.

Badges

CODE

3 badges

Core Contributor '17 Meta Contributor '19 Plugin Developer

PRACTICE

1 badge

Support Contributor '26

POLYGLOTS

2 badges

Translation Contributor '15 Translation Editor '16

Current Job

Senior full-stack offensive web engineer/architect

Sep 2015 – Present

CyberWire B.V. · Full-time

Recent impact

Score weights high-impact work (commits, releases, approved translations, props) at 3x routine activity.

Last 30 days

4contributions

high1

medium3

score6

Last 90 days

9contributions

high3

medium6

score15

Last 12 months

88contributions

high14

medium74

score116

Team focus

Share of contributions across teams during the last 365 days

WordPress releases

Contributed to 20 releases

Contributions

Type

September 2026

Sep 12 Sat · 12:04

Playground med

Created issue #4325 in the WordPress/wordpress-playground repository:
Platform mu-plugin always 301s /sitemap.xml and blocks third-party sitemaps

Sep 12 Sat · 10:23

Forums med

Posted a reply to Incorrect homepage canonical placeholder with /blog/%postname%/ permalinks, on the site WordPress.org Forums:
Thank you for the detailed report, @webdocopy! It helped pin down the cause immediately. I…

Sep 07 Mon · 00:48

Core med

Submitted pull request #13413 to WordPress/wordpress-develop:
Merge extra headers into the get_plugins() cache after the first scan

Sep 07 Mon · 00:39

Core med

Created ticket #66057 on Core Trac:
get_plugins() cache ignores extra_plugin_headers registered after the ...

August 2026

Aug 11 Tue · 05:59

Forums med

Posted a reply to outstanding!, on the site WordPress.org Forums:
I maintain The SEO Framework -- that's why I got an automated notification about this…

Aug 11 Tue · 05:18

Forums med

Posted a reply to outstanding!, on the site WordPress.org Forums:
Just speculating, but that sounds like a Jetpack bug where it persists settings conditionally based…

July 2026

Jul 23 Thu · 21:41

Forums med

Posted a reply to The only SEO plugin I trust, on the site WordPress.org Forums:
❤️

Jul 08 Wed · 07:03

Core high

Mentioned in [62664] on WordPress SVN:
Sitemaps: Add the `is_sitemap()` conditional tag.

June 2026

Jun 25 Thu · 14:05

Polyglots high

Translated 1 string on translate.wordpress.org.

Jun 12 Fri · 14:23

Forums med

Posted a reply to Request: 301 Redirects Setting – global list, on the site WordPress.org Forums:
Hi Greg! Glad to see you're still around :) Yes, this feature is planned as…