Mário Vaz was born in 1962, in the province of Huambo, Angola. He holds a degree in Law from Universidade Clássica de Lisboa. He started his career in the sales area, passing by companies such as Abreu Junior and Bull-Zenith Data Systems. He has been with Vodafone Portugal since Telecel inaugurated its service to the public in 1992. He took on different roles and positions before being appointed Director of the Business Unit in 1999, such as large account manager, sales support supervisor and director of Operational Marketing. He joined the Executive Board as head of the Private Business Unit in September 2009. Three years later, he assumed the chairmanship of Vodafone Portugal’s Executive Council and in June 2014 he became the Chairman of the Board of Directors.