My research interests are in the field of particle physics phenomenology, in particular perturbative QCD and the construction of Monte Carlo event generators. This involves many different aspects and methods from most areas of phenomenology, see Phys.Rept.504(2011)145 for a recent review. Modern event generators are required to be highly flexible tools and allow to turn improved theoretical models into predictions for actual measurements within hours. Their construction, validation and extension is therefore one of the principal tasks of the particle physics community today. In this enterprise I contribute as one of the main authors of the Sherpa package. I am also involved in the BlackHat project, which aims at reducing theoretical uncertainties in multi-jet calculations. Some lightweight C++ Tools have been created as a byproduct of my work.