Mzinga Corporation was established in January 1971 as a Project under the Tanzania Peoples Defence Forces Headquarters (TPDF) under the name of Mzinga Ordinance Factory. On 13th September 1974, the Mzinga TPDF project was legally declared a Public Corporation by the Government Establishment Order No.219. This changed the name of Mzinga TPDF project to the present Mzinga Corporation.

The Public Service Recruitment Secretariat (PSRS) is a government organ with a status of independent Department established specifically to facilitate the recruitment process of employees to the Public Service. Public Service Recruitment Secretariat was established by the Public Service Act No. 8 0f 2002 as amended by Act No. 18 of 2007, section 29(1).