The passion for Joomla began for Sander Potjer in 2005 with building a site for his rowing team. He was immediately impressed with Joomla and the community surrounding it. Soon he became personally involved and co-founded JoomlaCommunity.eu and started the Dutch Joomla User Groups together with others.
From this community the Dutch foundation "Stichting Sympathy" emerged, to promote and support Joomla in the Netherlands, which Sander chairs. This foundation also organizes the annual Dutch JoomlaDays. Internationally he volunteer to Joomla as a member of the Community Leadership Team (CLT).
Sander is co-owner of Perfect Web Team where they develop, maintain and support web solutions for complex situations based on Joomla. He is also the creator and developer of ACL Manager, a popular Joomla extension that simplifies the management of access permissions.