David has been a web-entrepreneur since 2003 and has extensive experience with WordPress, Joomla and e-commerce solutions. In the past he founded a hosting company, gave web development trainings and worked on custom web applications.
As an entrepreneur he codes and sells his software products internationally (WordPress plugins and Joomla extensions). He is most known in the Netherlands for his experience with payment systems, specifically iDEAL, the number one Dutch payment method with 630 million transactions.
He likes to speak about website improvement and eCommerce and in has spoken (or will speak) at WooConf (WooCommerce Conference), WordCamp Cologne, WordCamp Netherlands and various WordPress meetups.
Please visit his personal website which has a little bit more information.