Esther is a Staff Software Engineer at Quantcast on the Targeting Product Engineering team. In her current role, Esther leads the development of Quantcast Advertise products and features. Since joining Quantcast in 2012, she has designed and built systems (machine learning pipelines, feedback control loops, and alerting systems) to optimize ad campaign performance and delivery. Esther holds an MS in Electrical Engineering from Stanford University and a BS in Electrical Engineering and Computer Sciences from the University of California, Berkeley.