Rudolf Siebenhofer is a management consultant, IT consultant and trainer. The main focus of consulting and training is requirements engineering, estimation methods and the introduction of agile approaches in software development. As a consultant and trainer, he brings the experience from 35 years of working in the software industry for various domains (telecommunications, medical technology, automotive) into his training and consulting. Rudolf Siebenhofer is certified in all IREB CPRE modules (Foundation Level, Advanced Requirements Management, Advanced Level Elicitation, Advanced Level Modeling and Advanced Level RE@Agile) and he is an IREB Digital Design Professional.