Simon Chen is a Senior Machine Learning Engineer at Amazon, where they build the "Rufus" AI shopping assistant and scale engineering systems to support millions of users globally. Previously, Simon worked as a Senior Software Engineer at Cummins Inc. and as a Software Development Engineer at Amazon Web Services (AWS). Simon holds a Master's degree from the University of Illinois at Chicago and completed PhD studies at The Chinese University of Hong Kong. Currently, Simon focuses on developing agentic systems for AI-native shopping experiences and designing memory architectures for personalized customer interactions.