After finishing his Masters degree in Metallurgie at the Technical University of Clausthal Zellerfeld Guido Stebner started his career in 1991 in the corporate research and development center at Thyssen Stahl AG. In his first years with Thyssen Stahl AG he was tasked with the development of strip casting processes for flat steel products, a topic he earned his doctors degree on in 1996 from Rheinisch Westfälische Technische Hochschule Aachen. Later on he took several positions within ThyssenKrupp with increasing responsibilty in R&D, operations and project management also internationally in France, Italy and most recently in the United States of America.After the merger of the stainless steel activities of ThyssenKrupp and Outokumpu in 2013 he served on the board of Outokumpu Stainless USA as Vice President of Operations in Calvert, Alabama. In this function he was responsible for operations, quality, operational planning and infrastructure of the stainless steel flat production facility in Calvert.
Since October 2016 Guido Stebner is leading as member of the board the area Production and Technology for Swiss Steel AG in Emmebrücke. His responsiblities comprise the operational units of melt shop and rolling mill as well as the support functions quality, logistics, operational planning, technical projects and laboratory.