The professional construction management form of organization is gaining increased usage because of distinct advantages offered on certain types of projects. The paper examines the viewpoint of the architect/engineer serving as a member of the CM team under this delivery system. The role of the A/E, including differences in A/E performance as contrasted with the traditional form of project organization, is considered in detail. Key A/E tasks during each phase of the project are identified. Elements of effective A/E performance, including responsiveness, responsibility, field organization, and design documents are analyzed. The writers conclude that the potential benefits of this project delivery system can be best realized by a precise definition of the A/E role. The A/E must be both aware of differences in performance under this system and receptive to construction input from the CM. Practical application of the concepts presented from the A/E viewpoint lies in avoidance of common problems on CM projects and the full support of the PCM team.