A server-side project manager utilizes a set of web service APIs to create, update, schedule and manage projects on a server. A user submits a project update request when the user creates a new project or modifies an existing project. The project update request is associated with an API that calls the server via a web service to update the project. Example APIs include a data retrieval call, an administrative call or a data update call. A processor compares the project update request to any existing project definition to identify update values. A set of calculations is performed using the update values and any existing project definition. The project is updated based on the calculation results and stored in a data store.