December 2007–present: Research Scientist, Environmental Modelling and Monitoring, CSIRO Mathematics, Informatics and Statistics, Hobart, Tasmania, Australia.

December 2002–December 2007: Research Scientist, Pelagic Fisheries and Ecosystems, CSIRO Marine and Atmospheric Research, Hobart, Tasmania, Australia. Modelling complex ecological and socioeconomic systems.

April 1990–November 2002: Assistant Project Leader for the Oregon Department of Fish and Wildlife, Aquatic Inventory Project. Corvallis, Oregon, USA. Design, supervision, and analysis of basin- and landscape-level surveys of stream fishes and habitat, with emphasis on status reviews of sensitive and endemic species.