Rui is a software engineer at HP Vertica West. He has recently worked on Vertica query optimizer, storage engine, and Vertica/Spark integration. Before joining Vertica West, he was a software engineer at the data analytic infrastructure group of LinkedIn, where his responsibility was around building a computation engine for pan-LinkedIn data. Previously, he was postdoctoral research fellow at the database group of the University of Waterloo, building databases for cloud environment. Earlier, he was a researcher at HP Labs China, where his research area was to facilitate data intensive computations within and over database engines.