Hi, I’m Joost The Content Decoder and I help businesses of any size with their semantic SEO.

I’ve learned from Koray Tuğberk GÜBÜR, Bill Slawski, and by reading Google’s patents to uncover how to communicate with search engines and get your site ranked higher.

I used to be a data scientist for Vivat, one of the largest insurance companies in the Netherlands, before I started my own digital publishing company. I’ve learned to bring machine learning to improve SEO processes and uncover unique data to decode how search engines see your content with analytics, data science, and semantic SEO.

Send me a message about your project. I’m always happy to talk shop and perhaps we can work together 🙂

Joost Nusselder – connect with me on Linkedin to talk more about this

Ezoic video master award
Certified Ezoic Expert


As a business economist by trade, I always wanted to start my own company. But I started my career in customer service, coaching en after that marketing and analysis in the corporate world.

With these tools in my pocket I started Decision Tree Online Services, first a Content Marketing Agency creating content for others, and now a Digital Media Company with our own sites.


With my team, we create helpful articles that assist people in finding answers to their question online. Like what the best toys are, or what astonishing culinary arts came from the Muromachi period.

My passion lies in analyzing opportunities, setting up A/B and multivariate tests and getting my websites ready for optimal discoverability and conversion.


In working with my team of writers, editors, video creators, and image professionals I can use all of the experiences from the corporate world. I can coach on the structure and method of operation, and on writing the best possible content.

As soon as you get it down into a process, you can start outsourcing some of the work. That’s why I work Agile in Kanban with Trello.

What are the things I can go on and on about

Let’s connect

I can talk at lengths about SEO, content marketing, and getting your website found with text, images, video, and more. But also about working with a remote team and blogging about playing the guitar, toys, and Japanese food.

If these are some of the things you enjoy talking about, maybe it would be fun to have a drink or a coffee sometime.

Go to blog


Where can you find me?

[email protected]

My most prominent social media channels:

What might you know me from?

The content my team and I are most proud of:

Sushi calories

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Walnut wood?

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Guitar wood

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Multiscale guitar

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Rig arms

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Dashi substitutes

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Wood chart

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