Here are the slides from various presentations I've given. Unfortunately, I haven't kept the slides from some presentations, but most of the important ones are here.

Pokhara 2019
While visiting Nepal, Milan Ivanovic and I were asked to give presentations at the local Pokhara WordPress meetup. My talk was titled “Road to plugin development”. Download PDF | Download PPTX

Become a Caching King
The topic “Let’s talk about caching problems and solutions!” popped up as the topic for the Backend Web Berlin meetup group.

BirdCamp I – Seitengeschwindigkeit
BirdCamp I – Seitengeschwindigkeit. Friday March 20th 2015. Download PDF | Download PPTX

WordCamp Norway 2015
I gave a presentation at WordCamp Norway 2015 titled “Speed is key. How and why to use caching on your website.”

WordCamp Norway 2014
I gave a presentation at WordCamp Norway 2014 titled “Security. It’s not paranoia when they’re actually out to get you!”.

WordPress Oslo meetup 2013
I gave many presentations at the WordPress Oslo meetups, but didn’t prepare slides for most of them apart from this one in 2013, titled “Embedding Facebook”.

WordCamp Transylvania 2013
I gave a presentation at WordCamp Transylvania 2013 titled “Decisions, not options”. The conference was in Cluj-Napoca, Romania.

WordCamp Edinburgh 2012
Arnstein Larsen and myself co-presented a talk titled “Metronet Plugins. Why we make them and why you should too” at WordCamp Edinburgh 2012.

WordCamp Lisboa 2012
I presented a talk at WordCamp Lisboa 2012, titled “Tortoise vs the hare. High performance WordPress hosting on the cheap”.

WordCamp Norway 2012
I presented a talk at WordCamp Norway 2012 in Oslo. I moved to Oslo only a week before the presentation. The presentation was titled “WP Paintbrush. WordPress for those who hate writing code”.

WordCamp New Zealand 2009
I gave a presentation at WordCamp New Zealand 2009 in Wellington city, titled “Code without Coding”.