CTO & Co-founder Phil was most recently the CTO of Panther Express, a next-generation content delivery network that was acquired by CDNetworks. Prior to Panther, Grieshaber was a senior technologist at DoubleClick (now owned by Google) for eight years, and was primarily responsible for the ubiquitous DART Ad Server and DART Mail products. Phil graduated from Cooper Union in 1987 with a degree in electrical engineering and computer science.
