This website’s domain name comes from my legal first name, Sytse, but please call me Sid.

I love to build companies and philanthropies that have the potential to improve the world around us. I believe in raising the aspirations of ambitious people.

My wife and partner Karen Sijbrandij and I are both originally from the Netherlands.

Here you’ll find more information about GitLab, as well as our projects, philanthropic ventures, my cancer journey, and new ideas I’m excited about.