John Blackbourn
Human Made Ltd
@johnbillion Norwich, UK; and Torino, Italy joined Dec 2005
Maintains
Build/Test Tools
Cron API
Security
Teams
Core
Bio
Badges
CODE
6 badges
Core Contributor
'15
Core Team
'15
Plugin Developer
Security Contributor
'22
Security Team
'22
CONTENT
1 badge
Documentation Contributor
'17
COMMUNITY
5 badges
bbPress Contributor
'19
B
BuddyPress Contributor
'19
Meetup Organizer
'18
WordCamp Organizer
'20
WordCamp Speaker
'19
PRACTICE
2 badges
Accessibility Contributor
'19
Support Contributor
'26
POLYGLOTS
1 badge
Translation Contributor
'15
Current Job
Present
Human Made Ltd
Recent impact
Score weights high-impact work (commits, releases, approved translations, props) at 3x routine activity.
Last 30 days
203contributions
high130
medium73
score463
Last 90 days
320contributions
high211
medium109
score742
Last 12 months
942contributions
high598
medium344
score2138
Team focus
Share of contributions across teams during the last 365 days
WordPress releases
Contributed to 40 releases
- 7.1
- 7.0
- 6.9
- 6.8
- 6.7
- 6.6
- 6.5
- 6.4
- 6.3
- 6.2
- 6.1
- 6.0
- 5.9
- 5.8
- 5.7
- 5.6
- 5.5
- 5.4
- 5.3
- 5.2
- 5.1
- 5.0
- 4.9
- 4.8
- 4.7
- 4.6
- 4.5
- 4.4
- 4.3
- 4.2
- 4.1
- 4.0
- 3.9
- 3.8
- 3.7
- 3.6
- 3.5
- 3.4
- 3.3
- 3.2
Time commitment
16 hours per week of sponsored contribution time
Contributions
Type
September 2026
Sep 03
Thu · 19:56
Core
high
Mentioned in [63451] on WordPress SVN:
Code Quality: Tighten the remaining documented types for hooks.
Code Quality: Tighten the remaining documented types for hooks.
Sep 02
Wed · 18:33
Core
high
Mentioned in [63439] on WordPress SVN:
Build/Test Tools: Improve bcrypt-related unit test performance.
Build/Test Tools: Improve bcrypt-related unit test performance.
Sep 01
Tue · 13:00
med
Wrote a comment on the post Updates to the WordPress Vulnerability Disclosure Program, on the site Making WordPress Secure:
+make.wordpress.org/core/
+make.wordpress.org/core/
August 2026
Aug 31
Mon · 20:04
Core
med
Aug 31
Mon · 18:44
Core
med
Aug 31
Mon · 17:03
Core
high
Mentioned in [63410] on WordPress SVN:
Build/Test Tools: Publish PHPUnit timing metrics to CodeVitals.
Build/Test Tools: Publish PHPUnit timing metrics to CodeVitals.
Aug 29
Sat · 23:29
Forums
med
Posted a reply to wp-cli cron event and paused crons, on the site WordPress.org Forums:
The paused events do still run in this situation, but their callback never fires, so…
The paused events do still run in this situation, but their callback never fires, so…
Aug 29
Sat · 23:10
Plugins
high
Aug 29
Sat · 20:41
Plugins
high
Aug 28
Fri · 17:01
med
Wrote a comment on the post The Core Security Initiative, on the site Making WordPress Secure:
+make.wordpress.org/core/
+make.wordpress.org/core/
No contributions in this category yet.
Developer
3 plugins-
Query Monitor
200,000+ active installs -
User Switching
200,000+ active installs -
WP Crontrol
300,000+ active installs
Contributor
6 plugins-
Airplane Mode
60+ active installs -
C3 Cloudfront Cache Controller
3,000+ active installs -
HM Content TOC
10+ active installs -
Login as User
30,000+ active installs -
Sched Event Management Software
200+ active installs -
Two Factor
100,000+ active installs
Plugins
16 favorites
Themes
2 favorites
Translations
7 locales
it_IT
Italiano (Italian)
Translation Contributor
Contributed translations to 2 projects.
nl_NL
Nederlands (Dutch)
Translation Contributor
Contributed translations to 2 projects.
bg_BG
Български (Bulgarian)
Translation Contributor
el
Ελληνικά (Greek)
Translation Contributor
fi
Suomi (Finnish)
Translation Contributor
fr_FR
Français (French)
Translation Contributor
lt_LT
Lietuvių kalba (Lithuanian)
Translation Contributor