Search-Based Design of Large Software Systems-of-Systems This work in progress paper presents the foundation for an Automatic Designer of large softwaresystems-of-systems. The core formalism for the Automatic Designer is UML. The Automatic Designer extends UML with a fitness function, which uses analysis of non-functional requirements, utility theory, and stakeholder requirements, as the basis for its design suggestions. This extension logic is formalized using an OCL-based Predictive, Probabilistic Architecture Modeling Framework (called P2AMF). A set of manipulation operators is used on the UML model in order to modify it. Then, from a component library (with OTS products), new components will be introduced to the design. Using operators, a search algorithm will look for an optimal solution.