The competency matrix offers a perspective into the requirements for effectively managing human resources. This is essential for implementing circular arrangements and striving towards circular economy objectives, applicable to both public clients and potential service providers. Additionally, a summary of the required skills can simplify the process of hiring, training, and advancing the expertise of essential practitioners. These efforts can also catalyse the shift towards circular-oriented societies. Ultimately, the matrix serves as a foundation for enhancing transparency in circular public procurement.