Terrence Holderby has extensive experience in quality assurance and process engineering, currently serving as the Director of Quality Assurance for Residential at GAF since January 2012. Holderby has progressed through various roles at GAF, including Manager of Quality Systems and Services and Senior Process Engineer, while also overseeing the Quality Assurance department and the asphalt plant. Prior to GAF, Holderby worked at Cardinal FG as a Senior Stillyard Engineer and Process Engineer from January 2011 to January 2012. Educationally, Holderby holds a Bachelor of Science in Chemical Engineering from the Missouri University of Science and Technology, earned between 2006 and 2010.
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