Tim Castree is a media and marketing leader who has built his career at the intersection of data, media, and brand-building. He currently serves as a global marketing vice president at Amazon. Prior to joining Amazon, Castree led creative and media agencies, culminating in his role as the first CEO of WPP’s Wavemaker, formed by the merger of mega-agencies MEC and Maxus. He also served as the CEO of GroupM’s North American business. He has been a long-time political hobbyist and spent 2020 serving as the Digital Director of Mike Bloomberg’s 2020 Presidential Campaign. A small-town Australian, Castree has spent most of his career in New York, where he now lives with his family.