Bernd Oestereich owns and manages his own software company Oose.de ("oose.de Dienstleistungen fur innovative Informatik") He has over 10 years' experience in OO software engineering, including working as an analyst, designer, programmer, project leader and trainer. He regularly speaks at conferences in the Object Technology, Requirements Engineering, Software Architecture and Software Management areas. He's also a partner in System Bauhaus (network of German OO consultants) with Nico Josuttis and Peter Hrushka.