Since 2005, Torsten Keller is a full-time Professor for Corporate Accounting and General Business Administration Theory at HSBA Hamburg School of Business Administration.
In his dissertation, completed at Universität Hamburg in 1994, he developed an approach for designing incentive systems for the provision of information.
Subsequently, the qualified business engineer worked for more than 10 years as the managing director of an SME. Professor Keller also managed advisory projects and held lecturing posts, particularly in the field of controlling. He also spent time as the academic head of a private university, where he was responsible for the academic running of the business administration programmes. His teaching and research areas continue to focus on corporate accounting.