He is currently situated in the Molecular Energy Materials Group, where he works on computational modelling of molecules and materials. He is interested in understanding properties and reactivity in relation to chemical bonding in molecules and materials. He is developer of the TURTLE program, which is a program for valence bond (self-consistent field) and non-orthogonal configuration interaction calculations. He also works on magnetic response theory, and develops methods for the calculation of magnetically induced current densities.