Palatine, IL, U.S.A.President at MacGillivray Associates Dennis J. MacGillivray is the founder and president of MacGillivray & Associates, Inc., a firm focused on business development advisory services. He has... Dennis J. MacGillivray is the founder and president of MacGillivray & Associates, Inc., a firm focused on business development advisory services. He has developed and honed the use of proven tools and processes for sales leadership, client service, strategic account management and business...