About

Eddie Xie is a highly experienced Staff Software Engineer at Twitter, with a focus on machine learning. He is currently the Tech lead for the Ads Pacing Service team, where he has built and operated Twitter's Ads Pacing System. Eddie has also been instrumental in re-writing the ads pacing library, enabling state-of-the-art algorithms that have achieved multi-hundred millions revenue gain so far. This has resulted in a single-digit percentage improvement of Twitter's overall revenue. Eddie has also been involved in the Ads Ranking & Serving project, where he prototyped and implemented the first version of the Ranking Service with the team. He has identified and fixed multiple ads serving issues, unlocking millions of revenue gain. Prior to his current role, Eddie worked as a Senior Machine Learning Engineer at Twitter, where he built various Ads Systems from the ground up. This included the Ads Ranking Service, which ranks relevant ads according to relevance and marketplace dynamics, and the Ads Pacing Service, which paces ads spending to maximize revenue and minimize the cost of engagement. Eddie has a strong educational background, with a Doctor of Philosophy in Computer Science from Cornell University, a Master of Science in Computer Science from Rutgers University, and a Bachelor of Science in Computer Science from Beihang University. With over 8 years of relevant experience, Eddie is highly skilled in machine learning, senior software engineering, and software engineering. He is a valuable asset to any organization looking to improve their revenue and optimize their ads systems.