William Sawyer is a senior computational scientist at the Swiss National Supercomputing Centre (CSCS), in Lugano, Switzerland, an autonomous branch of the Swiss Federal Institute of Technology, Zurich (ETH). He works in the Office of the Chief Technical Officer as a liaison between CSCS's customers – researchers from a variety of scientific disciplines, in particular from in Geosciences – and the system engineers and computer scientists who support current and emerging high performance computing solutions. He has more than 20 years of experience in numerical analysis for HPC, and has been active in research at NASA Goddard Space Flight Center, the University of Maryland, as well as CSCS.