Cleaning Systems Inc. (CSI) of De Pere, WI has announced the hiring of Michael Lamminen as Commercial transportation sales manager. Lamminen holds a bachelor of science degree in chemical engineering from Michigan State University, as well as an MS and PhD in environmental engineering from Ohio State University.

Lamminen previously served as global sales manager of the vehicle and heavy equipment wash manufacturer, InterClean Equipment, from 2004-2011. After leaving InterClean, he worked in the wastewater treatment industry as an international sales manager. Most recently, he owned a consulting company that focused on water and wastewater treatment consultation.