This doctoral-thesis deals with the role of procurement professionals in industrial projects. The role of procurement in industrial manufacturing has attracted considerable attention over the last several years; however, the role of procurement in projects is rather underresearched. From a project management point of view, procurement is mainly considered a transactional task, and remarkably few project management standards consider procurement at all. To overcome this gap, a Procurement Project Involvement Matrix has been developed. Building on this matrix, a Project Procurement Organisation Model for procurement experts involved into industrial projects was developed, too. In general, the project procurement job tasks framework as well as the Project Procurement Organisation Model will help to implement, improve and audit the involvement level of procurement in projects.