Stefan Rudnitzki works as team lead of the agile coach team at Testo. He has over 10 years experience working as software developer, project lead and team lead in different working environments. From waterfall to agile working methods up to holacracy he experienced the different challenges and benefits in the area of free and open source software. Additionally he is an organizer of the MongoDB user group and Async Cat Herding meetup in Berlin. Furthermore he is the co-founder of the FOSS Backstage conference.