Location Mokena, Illinois, United States Regions Greater Chicago Area, Great Lakes, Midwestern US Gender Male
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John Cosich is a founding member of Proven IT. Cosich is no rookie to the industry. He graduated from Valparaiso University in 1973 with a business degree, and landed his first job with Xerox Corporation in 1974. John entered retirement, however his time off was short lived. With two sons having graduated from college, he thought it might be a
perfect time start over again. In March 2003, Proven Business Systems was “born” with six employees and no customers.
