Diana Pfeil Chief Technology Officer Pex Diana Pfeil is Chief Technology Officer at Pex, the trusted global leader in digital rights technology. She is an established leader in engineering and machine learning/AI with over 15 years of experience building data products for both enterprise and startup companies. Prior to Pex, she held roles at Amazon, PayPal, and several startups focusing on e-commerce, recommendation systems, lending and financial services, travel, and responsible AI efforts. Diana holds a PhD in Operations Research from MIT. She has a passion for the data community, and has been heavily involved in the machine learning community as an event organizer, speaker, and adjunct professor teaching predictive modeling at CU Denver.