Rolf Schellenberger graduated from Delft, University of Technology with a Master’s degree in Software Engineering in 2009. He did his research on automatic image annotation and his master thesis at Teezir on plagiarism detection by similarity join. During his studies, he gained a lot of experience in software developing. Before joining Teezir in 2009, Rolf worked for various companies and clients to build and design websites, Java applications and has hands on experience with data centres and hosting. Rolf ran his own company in hardware and software from 2000 till 2005 and started the partnership WISE (Web Information Search) in 2009. The company built one of the 100 most popular sites in the Netherlands, having more than 25000 page views and search requests per hour. At Teezir Rolf is working as a developer on various search solutions.