Bob Walczak is the founder and CEO of MadTech, a technology and consulting practice focused on helping brands, publishers and agencies craft and implement effective advertising tech stacks and first-party data strategies. Bob is a seasoned digital advertising executive with over two decades growing revenue inside of major advertising operations.
Most recently, Bob was appointed Executive Vice President of Global Product for Xaxis, a programmatic audience business inside of WPP’s GroupM media buying division. Prior to joining Xaxis, Bob served as CEO of Light Reaction (a Xaxis company) where he grew revenue from $80 to $120 million in a single year, expanding the business from 28 to 32 markets globally. Before Light Reaction, Bob drove revenue and user adoption as General Manager for BidSwitch, a wholly-owned subsidiary of Criteo, doubling its client base in a year’s time and growing the platform’s revenues by over 500 percent to $125 million in annual revenue. Bob also developed PubMatic’s (NYSE:PUBM) mobile and emerging media business from inception to more than $100 million in annual revenue in under 3 years.
Bob is widely recognized as a pioneer in the ad tech industry, starting his career founding Ringleader Digital in 2005. As founder and CEO, he led one of the first companies to develop a comprehensive mobile ad server with patented mobile ID technology.
