Mr. David Large, MBA, PMP President Leader Consulting Inc. Mr. David Large is a professional businessman, speaker and I.T. Management Consultant who specializes in helping mid to large size businesses get the most from their technology investment. Mr. Large is the founder and principal of Leader Consulting Inc. and has been providing consulting services for 18 plus years. Prior to founding Leader Consulting Inc. Mr. Large was the Manager of Computer Services for a large financial institution. Mr. Large has over 26 years of experience in making I.T. work.