Citrix Systems, Inc. is an American multinational software company that provides server, application and desktop virtualization, networking, software as a service (SaaS), and cloud computing technologies. It was founded in Richardson, Texas in 1989 by Ed Iacobucci, who served as chairman until his departure in 2000.
Ed Iacobucci was with Citrix Systems, Inc. for the entirety of the 1990's. 
He founded the company in 1989 and didn't depart until the year 2000. That covers all of the years of the 1990's which means that he was with and a part of Citrix Systems throughout the Nineties. 