Arnim Balzer has served as the core data acquisition and array control system expert of the H.E.S.S. telescope system during his PhD and postdoc position in H.E.S.S. He has contributed significantly to on-call expert shift work, to the commissioning of the H.E.S.S. phase-2 system, and to the optimisation of the rapid follow-up system of external triggers. Arnim has also contributed to the H.E.S.S. data reconstruction framework and analysed the H.E.S.S. Crab nebula data recorded during a GeV flare measured with the Fermi-LAT telescope.