Joerg Siebert Jörg Siebert has 20 years of experience working with SAP Financials and is an internationally recognized author, speaker, trainer, and veteran SAP consultant. He has worked throughout Europe in the automotive, healthcare, and service industries and regularly delivers sessions at international SAP conferences. Previously, Jörg was a product manager for SAP ERP Financials at SAP German headquarters. He is the Co-founder and Managing Director of Espresso Tutorials, a publishing company focused on short and concise SAP textbooks.