David Xu

David Xu is a software engineer with a diverse background in technology and finance. Currently employed at Amazon since July 2025, David previously worked as a software engineer at Citadel and Nelo, where responsibilities included REST API development in Kotlin, CI/CD pipeline creation for machine learning models using Python and AWS, and mobile app development with React Native. Prior experience at Barclays Investment Bank involved roles as an equity derivatives trader and a sales and trading intern, focusing on portfolio management and developing analytical tools using Python and KDBq. David's academic foundation is based on dual degrees in Computational Finance and Statistics & Machine Learning from Carnegie Mellon University, complemented by research on trading strategy optimizations during a student research position.