Daniel N. Wilke is a senior lecturer (PhD) in the Department of Mechanical and Aeronautical Engineering at the University of Pretoria. Daniel is a design optimization researcher that investigates computational finite and discrete element applications within the Centre for Asset and Integrity Management. C-AIM is focused on life cycle management of physical assets for key industries in South Africa. This includes the optimization of industrial processes, which requires computationally demanding large-scale analyses. He proposed gradient-only optimization in 2006 as an alternative optimization formulation that allows for multi-fidelity simulation models to be used when accurate sensitivities are available. He is also a co-developer relating formulation of the discrete element computational platform BlazeDEM-GPU. Since 2015, Daniel has been a Tuks Young Research Leadership Fellow, which is aimed at driving and developing research excellence within Africa.