Joshua Leners is Vice President at Two Sigma, where he works on platform infrastructure. Recently, his work has focused on reducing tail latencies in large-scale computations, and improving scheduling outcomes in a 3.8+ petabyte distributed platform. Previously, he worked on building out a storage system to serve data to this compute platform, peaking at over 4 Tbps served and 100 PB stored. Prior to working at Two Sigma, Josh completed his Ph.D. at The University of Texas at Austin on failure detection and worked as a contract researcher at Microsoft Research on distributed databases.