Robert has a hybrid background of Stats, Econ and CS. He enjoys making decisions, especially through the system he built. During his three years at Groupon, he uses Spark to support a production low-latency anti-hacker system. To run the system faster and more robust, he has experimented multiple “hidden” usage patterns, which are not yet well-known by the vast majority, and has also written tools to fulfill these ideas. One of his tools, Sparklint, was open sourced during Spark Summit EU 2016.