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David Sperandio is currently working as the Engineering Manager & Mechanical Designer at Quaker Windows & Doors since April 2011. Prior to this, David held various managerial positions at Window Technology, Inc. for nearly two decades. Their career started as an Engineering Programmer at EFCO a Pella Company. David holds a Lean Six Sigma Green Belt from Purdue University and has a degree in General Studies and Management from Missouri Southern State University. David also attended the University of Central Missouri from 1982-1986.