Abstract: A method of matching projects and workers using both both mandatory, or binary, characteristics and quantitative characteristics is described. The projects and workers have a number of characteristics that are symmetric. For example, the project has an activity characteristic that defines what is to be done and the worker has an activity characteristic describing what she/he wants to do. Project creators and workers can request matching workers and projects, respectively. The matching process itself occurs in two stages. In the first stage, the mandatory characteristics are considered. Only workers, or projects, meeting the mandatory characteristics are selected for further evaluation at the next stage. At the second stage, the quantitative characteristics are evaluated for the workers, or projects. The result is a subset of the total number of workers, or projects, matching the project criterion, or worker needs, ranked based on the quantitative characteristics.