Knowledge management (KM) is currently an important driver to develop dynamic capabilities for businesses, on behalf of competitiveness. Nonetheless, some critical success factors are hampering KM implementation, such as a lack of a KM strategy, cultural aspects, leadership, and technology. In this paper, we focused on the KM implementation within Small and Medium Enterprises (SMEs) by exploring Participatory Design potential to KM implementation in SMEs, by focusing on information technology as a critical success factor and exploring some organizational culture characteristics that can help in this context. To achieve this goal, we conducted an ethnographic study in the real environment of a consulting firm which is starting its own KM project. Our results show that Participatory Design might be recommended to SMEs’ KM implementation, by taking advantage of already available, but underused technological tools.