This chapter focuses on the capacity of the public procurement workforce in the State of Mexico. Public procurement has been experiencing a major transition from an administrative function to a strategic one due to its increasingly complex rules and multidisciplinary nature. Therefore, a highly skilled public procurement workforce is required for a sound procurement system. The chapter reviews the existing regulatory frameworks, strategies, and institutional frameworks related to the professionalisation of the public procurement workforce at the State of Mexico. Then, it analyses key priority areas to establish an effective professionalisation and capacity building system: (i) assessing capacity of the public procurement workforce, (ii) developing a competency framework and a certification framework, and (iii) developing a capacity-building system. Lastly, the chapter provides proposals for action that the State of Mexico could consider to advance the professionalisation agenda by enhancing the recognition of public procurement as a professional task.