About Joost de Valk

Hi! I’m Joost de Valk, an internet entrepreneur from the Netherlands.

I’m the founder of Yoast, which we sold to Newfold Digital in 2021. I have a long history in digital marketing as well as WordPress. I’m married to Marieke, who was Yoast’s CEO until we sold it, and is still both my life and business partner. Marieke and I have four children together.

Marieke and I invest in companies that play at least partly in the digital space through our company Emilia Capital. We also run our own projects there, most notably Marieke’s Empowerwoment project. You can check out the companies we invested in or get in touch if you want us to invest in your company!

I founded Yoast in 2010, after working in several different companies as a digital marketing consultant. I’ve worked on some of the biggest SEO projects in the world, like the site migration of the Guardian from .co.uk to theguardian.com.

In our spare time, we love spending time in our Tuscan vacation home or travel to other places in the world.

Headshot of Joost de Valk

Speaking Engagements

I love the opportunity to speak at conferences all over the world.

Upcoming Gigs

Your Event Here!

Looking for a speaker? I’d love to hear about your event!

SEPTEMBER 13-14, 2023
BERLIN, Germany

SMX Advanced Europe

I’ll be speaking at SMX Advanced in Berlin this fall.

SEPTEMBER 17-22, 2023
munich, Germany

SEOktoberfest G50 Summit

I’ll once again be speaking at the world’s best (invite-only) SEO conference.

October 5, 2023
AMsterdam, The Netherlands

Emerce eDay

Inspiration event for the next year in digital.

Past Speaking Engagements

Products I Work On

As chief product at Yoast, I spent most of my time looking at Yoast SEO and its related products. I still advise on that, but I also advise our other investments like CastosPeerby and WordProof.

Yoast SEO Screenshot

Yoast SEO

Yoast SEO is the most used SEO plugin for WordPress. With automatic XML sitemaps, the most sophisticated Schema API and lots and lots of technical SEO optimizations inside, your site deserves nothing less.


I spend on average about 2 hours a week on WordPress core, mostly making small technical improvements to improve its SEO and performance.

WordPress logo
WordProof logo


I’m an investor in and advisor for WordProof. The WordProof Timestamp Ecosystem empowers internet users and content creators with the tools to build a safer and more trustworthy internet. We’re building a trusted web, together!