...after his studies of business administration in Cologne (degree: Diplomkaufmann), he first gained experience in the financial sector, including controlling, and then worked for several years at one of the "Big Four" management consultancies. He then worked for nine years as a senior audit manager in a major company with worldwide operations.
Mr. Duesterwald has ten years of experience as manager of (larger) projects.
At the German Institute for Internal Auditing (DIIR) he played a major role in the development of an audit standard for the auditing of projects. He has extensive experience and references in organizational and process consulting. He has written a number of publications on his areas of expertise.
In 2013 Mr. Duesterwald founded RDB Unternehmensberatung with the aim of offering highly qualified, independent auditing and consulting services.
Since 2020, he has been responsible for the consulting division at UPB & Partner.