David Pietsch is a Systems Engineer at Rolls-Royce Solutions, working on the practical application of Model-Based Systems Engineering (MBSE) in complex product development. Before joining the Hybrid Mining Truck project, he worked as a System Architect on a rail project, where he gained experience in interdisciplinary systems engineering and architecture development. In his current role, David uses the Arcadia methodology and Capella to develop and evolve system, logical, and physical architectures for the Hybrid Mining Truck. He works closely with engineering teams and stakeholders to transform requirements, technical knowledge, and design decisions into consistent system models. His particular interest lies in making MBSE useful in everyday engineering practice. This includes building a shared understanding across disciplines, supporting architecture-based decision-making, and continuously improving both the model and the underlying engineering approach.