Matt is a seismologist who focuses on earthquake forecasting and seismic hazard modelling. He has particular interests in better understanding and quantification of uncertainties, developing testable models (and testing them), and also developing methods for propagating uncertainties through to end uses of forecasting and hazard models. He has actively worked in seismology in the USA, Japan, Europe and Australia. He currently leads the National Seismic Hazard Model and also the earthquake forecasting teams at GNS. He is a GeoNet earthquake duty seismologist and is an Associate Editor for the Bulletin of the Seismological Society of America.