Tilo Linz is CEO of imbus AG, a leading service company for software testing in Germany. He is president of the German Testing Board from 2002 to 2005. His work emphasis is on consulting and coaching projects on software quality management, optimizing software development, and testing processes.
Hans Schaefer is an independent consultant in software testing in Norway. He is president of the Norwegian Testing Board. He has been consulting and teaching software testing methods since 1984. He organizes the Norwegian Special Interest Group in Software Testing for Western Norway. His work emphasis is on consulting, teaching, and coaching test process improvement and test design techniques, as well as reviews.