Arash Mostofi is Professor of Theory and Simulation of Materials in the Departments of Materials and Physics at Imperial College London. His research is dedicated to the development and application of first-principles modelling tools for the theory and simulation of materials. He is an original author and developer of two major electronic structure simulation codes, ONETEP and Wannier90, used by hundreds of researchers worldwide. His research interests include the electronic and optical properties of 2D materials and moiré materials, defects, surfaces and interfaces in materials for quantum technologies, and multifunctional perovskite and layered perovskite oxides.