Dr. Praveen Kolli is currently a Staff Machine Learning Engineer in the Ads Quality Team at DoorDash, where he focuses on developing advanced deep learning models to improve ad recommendations and enhance user experience. Prior to his role at DoorDash, he served as a Technical Lead in the Ads Ranking Team at Pinterest. At Pinterest, Dr. Kolli played a pivotal role in building cutting-edge models for personalized ad recommendations, contributing to the platform's success in delivering relevant ads to its users. He holds a PhD in Mathematics from Carnegie Mellon University, Masters in Mathematics of Finance from Columbia University and Bachelors in Electrical Engineering from Indian Institute of Technology, Kharagpur.