Lennart Ullmann Lennart B. Ullmann has been working in the Cash & Payment management area since 2003. During this time, he has worked as a consultant and project manager on many international SAP Financials projects. He is a specialist in the treasury areas of Payment Management and Bank Communication. Lennart has lived and worked in Germany and in the United States. In his current position, he is the Head of IT Finance for a German DAX company.