James Walker is a Research Fellow in the School of Mathematics and Statistics at the University of Melbourne. In 2020, they completed a PhD at the University of Adelaide which developed Bayesian inference and model selection methods for emerging infectious diseases. Subsequently, they joined the Australian COVID-19 modelling efforts where their research informed the Commonwealth Government’s early public health response. Their work utilises stochastic modelling and computational Bayesian methods to characterise infectious diseases. James is currently researching inference methods for agent-based models of malaria and optimisation of intervention strategies.