There is a paradox in the literature where the amount of cross-border M&As are increasing, even though there is a high volume of unsuccessful cross-border M&As. According to researchers, it can be due to lack of knowledge regarding the knowledge transfer process. Therefore, this study aims to grasp the technological knowledge transfer process and how enablers and constraints influence it during the post-acquisition phase. To fulfil the aim, data was collected through a qualitative case study where eight interviews were held with managersand non-managerial employees that had an important role in the studied technological knowledge transfer process. In addition, case documents were provided by the case company and a site visit was conducted. The results indicate that the technological knowledge transfer process is complex and dynamic, making it difficult to distinguish different phases as they overlap. The results also show that the technological knowledge transfer process is influencedby certain enablers and constraints, which in turn either facilitate or challenge the process. However, the enablers and constraints can vary depending on if the perspective of the senderor receiver of knowledge is applied.