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Dennis Claassen

I'm a senior developer at Yoast. But I started my career at the biggest Dutch jobboard for temporary work. With a small team we managed to score particularly well in organic traffic. I started as a front-end developer, but had to help out on the back-end part often as well. After a while I got to know the entire application and found my real passion: improving the effectiveness of my colleagues and seeing them grow.

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Luckily I was able to do this in many ways: gathering and reporting challenges faced by colleagues, refactoring code to follow SOLID principles, creating a testable codebase alongside a nice test suite, setting up tooling and build pipelines, but also outside of the IDE through educating interns and colleagues in both soft and hard skills.

Now I’m working for Yoast, I hope to be able to do the same thing for my new colleagues, but also gather new knowledge myself to continue growing as well.

Webwinkel Vakdagen 2025

April 02 - 03, 2025
  • Attending
  • Speaking
  • Sponsoring
  • Yoast Booth
Utrecht, The Netherlands
Marketing Conference

Meet us at Benelux’s biggest digital commerce event with the best digital commerce speakers and suppliers, Webwinkel Vakdagen! This year’s edition will be on the 2nd and 3rd of April. 📍 Visit our booth to meet the Yoast team, and chat about all things SEO. Our amazing colleagues Sid Sarris and Dennis Claassen are having […] Read about Webwinkel Vakdagen 2025 »

Come and meet us, we are attending: