Mr. Guan served as Chief Technology Officer at Drawbridge. He joined Drawbridge in 2010 as a founding member of the engineering team, bringing over 15 years of experience as a leader, entrepreneur, and developer. Prior to Drawbridge, Devin was Chief Architect at Announce Media, where he built a technology platform that powered the business to secure $260M in annual revenue. Devin joined Announce Media from Netflix, where he was responsible for conducting Netflix Prize, a large-scale crowd-sourcing machine learning contest. Like most Drawbridge employees, Devin had his heart set on mobile advertising early on; Devin was also as a founding member of AdMob's optimization team. Devin has held various engineering leadership roles at prominent companies like Yahoo!, where he designed query expansion algorithms for Yahoo! Search Marketplace, and also oversaw the entire architectural design of Yahoo! Video and Yahoo! Video Search.