Ozinga
John Grothaus has a diverse work experience in the concrete industry. John started their career in 1993 as a Dispatcher and Plant Manager at Certified Concrete, Inc. John then moved to Smith Ready Mix, Inc. where they worked as a Quality Control technician, Dispatcher, and eventually as a Plant Manager. In 1999, they joined Ozinga, where they held various roles including Quality Control, Plant Management, Operations Management, and most recently Vice President of Operations.
John Grothaus attended the I.T.T. Technical Institute from 1990 to 1992, where they obtained an Associate of Science (A.S.) degree in Electrical and Electronics Engineering.