Arnaud Defrenne, CTO, is a search tools expert. Prior to joining NetBooster he was Technical Director at the Liberty Surf Group (Group Tiscali). Between 1997-1999, Defrenne co-built Nomade.fr (the Number One French web directory) with Bryan Pelz and gained a reputation for constantly improving its service. In 1999, when Liberty Surf bought back Nomade, Defrenne helped implement the technical platform for the group's advertising department as well as the portal's information system..

Arnaud has a masters degree in business from Grenoble Business school and a diploma in IT systems management. He began his career in financial data processing at Schneider followed by Barclays Bank.