Christoph Daum (@apermo) – WordPress user profile

Christoph Daum

Senior Software Developer at Coding Pioneers

@apermo Germany, Bergkamen joined Nov 2011

christoph-daum.de github.com/apermo slack: @Christoph Daum (apermo)

Teams Community Core

Languages de_DE

Bio

Christoph is a WordPress and PHP specialist, with over 25 years of experience in web development. He started first web projects in the late 90s, some of which are still leading in their field. As technical lead on multiple projects with millions page impressions per month, his responsibilities included theme and plugin development, performance optimizations, and feature planning.

Christoph is a contributor to the WordPress ecosystem, host and founder of his local WordPress Meetup in Dortmund, and a frequent speaker at meetups and WordCamps.

Interests

WordPress, PHP, 3D Printing, DIY

WordPress Origin Story

I started of doing mostly TYPO3 when my good friend Hendrik Luehrsen @luehrsen talked in the highest tones about WordPress. Later during my agency days, I started working with WordPress, and in 2012 I attended my first WordCamp in Berlin, which was called WPCamp. On my second WordCamp in 2013, I met Robert Windisch @nullbyte, well and for everyone who knows Robert, this is all you need to know. Since that day, I’ve only missed a 3 WordCamps in Germany, I became founder and host of my local WordPress Meetup and I’m part of the “usual suspects” to buy a WordCamp ticket on release day.

Since 2014 I call myself an in-house developer for WordPress, doing WordPress as a full-time job. During these days I’ve dug very deep into multiple areas of the WordPress code, found a few bugs, suggested some improvements and the best is yet to come.

Badges

CODE

2 badges

Core Contributor '19 Plugin Developer

CONTENT

1 badge

Documentation Contributor '23

COMMUNITY

3 badges

Meetup Organizer '18 WordCamp Speaker '16 WordCamp Volunteer '26

POLYGLOTS

2 badges

Translation Contributor '16 Translation Editor '16

Current Job

Senior Software Developer

Present

Coding Pioneers

Recent impact

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

Last 30 days

0contributions

high0

medium0

score0

Last 90 days

1contribution

high1

medium0

score3

Last 12 months

3contributions

high3

medium0

score9

Specializations

share of activity across teams · last 365 days · 3 attributed contributions

Community 100% of attributed activity

Contributions

Type

March 2026

Mar 18 Wed · 19:51

Meta high

Confirmed as a speaker for WordCamp Leipzig 2026

February 2026

Feb 26 Thu · 12:19

Meta high

Confirmed as a speaker for WordCamp Vienna 2026

June 2025

Jun 13 Fri · 09:56

Meta high

Confirmed as a speaker for WordCamp Netherlands 2024

May 2025

May 28 Wed · 07:30

Meta med

Completed the course Open source basics and WordPress on learn.wordpress.org

March 2025

Mar 20 Thu · 20:39

Meta high

Received props from @JeffPaul in Slack:
Props to @audrasjb @davidbaumwald @michelleames @Ankit K Gupta @zunaid321 @narenin @sukhendu2002 @jigar9998 @qhaensler @zeelthakkar @lumiblog…

Mar 11 Tue · 19:04

Meta high

Confirmed as a speaker for WordCamp Vienna 2025

September 2024

Sep 06 Fri · 13:05

Meta high

Confirmed as a speaker for WordCamp Karlsruhe, Germany 2024

July 2024

Jul 16 Tue · 17:51

Meta high

Received props from @meher in Slack:
Props to @zunaid321 @jigar9998 @eboxnet @tremidkhar @Benjamin_Zekavica @noruzzaman @czapla @courane01 @benjamingosset @beryldlg @threadi @shailu25 @Toro_Unit…

June 2024

Jun 07 Fri · 08:42

Forums med

Posted a reply to session_start() with long wall time., on the site WordPress.org Forums:
The list of my plugins/themes that use PHP sessions is easy. It's just Ninja Firewall.…

Jun 06 Thu · 07:43

Forums med

Created a topic, session_start() will long wall time., on the site WordPress.org Forums:
Hello, I've taken over development of a site that u…