David is a serial entrepreneur with go-to-market executive experience and a track record of major increases of shareholders' value. David serves as Karamba Security's executive chairman and runs the company's go-to-market strategy. Before Karamba, David served as vice president of marketing at Mellanox, enabling revenue growth from $260 million to $500 million. David joined Mellanox after its acquisition of Voltaire, where he was vice president of software, managing software sales from $0.5 million to $6.5 million in one year. Prior to that, David was vice president at Mercury Interactive, signing the world's largest ISPs as OEMs. David joined Mercury after it acquired his first company, Conduct, yielding returns of 22x and 6x to its investors. Before Conduct, David was a sales executive at Sun Microsystems distributor in Israel, bringing it to be the largest Unix company in Israel by revenue ($35 million) and by market share (42%). Before that, David was a software engineer at Amdocs . David has earned a BA in computer science from the Technion, Israel Institute of Technology.