This paper presents the experience-oriented approach to the use of the individual and collective experience in the collaborative designing of software intensive systems. Means of the approach help any designer to interact with the accessible experience the typical units of which are precedents and their models. Moreover, means support the intense designer activity which is accompanied by the experiential learning in the team of designers. The approach is evolved till the tested workflows with corresponding toolkit. Workflows are presented as pseudo-code programs adjusted to their executing by designers each of which plays a role of an intellectual processor. The activity of the intellectual processor is being implemented with using the question-answer forms of experiential human-computer interactions.