Bill Graham is a staff engineer on the Real Time Compute team at Twitter. Bill’s primary areas of focus are data processing applications and analytics infrastructure. Previously, he was a principal engineer at CBS Interactive and CNET Networks, where he worked on ad targeting and content publishing infrastructure, and a senior engineer at Logitech focusing on webcam streaming and messaging applications. Bill contributes to a number of open source projects, including HBase, Hive, and Presto, and he’s a Heron and Pig committer.