His unique expertise in monitoring, performance and scalability is derived from leading projects for several successful companies. He currently works at Stripe, driving mission-critical projects including the architecture and design of the underlying infrastructure that processes billions of dollars a year. Previously, Ian was at Twitter, where he led development on several data-processing-related open source libraries, including Scalding, Bijection and Summingbird. He holds a MSc degree in computer science from Trinity College in Dublin.