I am currently working in the Druid team @ Twitter. In the past I have worked on other interactive analytics engines like Presto and Hive. Before Twitter, I completed my PhD working in the DPRG group with Prof Indranil Gupta. My thesis proposes efficient techniques for sharding, compaction, replication and prefetching. I have also worked for the InDesign team at Adobe for 3 years before doing a PhD.