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Hi! I’m Dennis Claassen.
I’m currently a lead developer at Yoast, leading 2 development teams. Each is part of a multidisciplinary squad, in which we focus on Yoast SEO for Shopify, and the Yoast.com website and MyYoast customer portal.
Continue reading on more about me. And if you want to get in contact or stay up to date with what interests me at the moment, the best places to find me are:
Latest posts
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Moving to WordPress: when static generation wasn’t enough
After years of building my personal site with Jekyll and YAML files, I made the switch to WordPress. It wasn’t a gradual decision or a careful evaluation of CMS options. It was more sudden than that.
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How I built my YAML-powered Jekyll site
Maintaining a Jekyll site by extracting data into YAML files. How Dennis Claassen.nl was built on top of GitHub Pages and evolved to an SEO playground.
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History behind Dennis Claassen.nl
How Dennis Claassen.nl went from a LinkedIn-powered headless site, via a YAML-powered static site, to the overpowered WordPress site it is today.
For more posts, continue to the blog.
Latest events
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WordCamp US 2025
August 26, 2025 – August 29, 2025WordCamp US 2025 is a first for me. I’m representing Yoast, with a booth to run, people to meet, and plenty of curiosity about all things happening across the ecosystem.
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Editions.dev 2025
May 29, 2025 – May 30, 2025Returning to Toronto for the second editions.dev. There’s such an energizing atmosphere, I really enjoy hearing what new foundations Shopify is creating and what their partners are building on those.
For more events, continue to the calendar.