Todd Gamblin is a Computer Scientist in the Advanced Technology Office in Livermore Computing at Lawrence Livermore National Laboratory (LLNL). He created Spack, a popular open source package manager aimed at HPC, which has a rapidly growing worldwide community of contributors. He also leads the Packaging Technologies area of the U.S. Exascale Computing Project, and BUILD, an LLNL strategic research initiative on software integration and dependencies. His research interests include dependency management, software engineering, parallel computing, performance measurement, and performance analysis. Todd has been at LLNL since 2008.