Stefan became interested in XP in 2003. He introduced a number of XP practices in his one-man team. In 2007, he joined SES (Philips MiPlaza), an organization with 7 years of experience with XP and Scrum. At Camp Scrum he learned the value of a scrum board. He now considers it an essential component of any software project. Currently he is using scrum from the perspective of agile project leader.