António Mendonça Mendes was born in Coimbra in 1976.
He graduated in Law from the University of Coimbra, with a major in legal-economics, in 1999.
He was assistant to the Secretary of State of Justice (1999-2002).
He practiced law at Gonçalves Pereira, Rato, Ling, Vong & Cunha in the Special Administrative Area of Macau (2003-2005).
He was Chief of Cabinet of the Secretary of State for Transport (2005-2008).
He was in-house counsel for the corporate group Geocapital (2008-2009).
He was Chief of Cabinet of the Minster of Health (2009-2011).
He was a director at REFER – Rede Ferroviária Nacional, EPE, in charge of Human Capital, Legal Affairs and Organisation (2011-2013).
He was a lawyer and partner at André, Miranda e Associados – Law firm, in Lisbon (2014-2017).
He was also Chairman of the Conciliation Committee for the Contract for Rail Operation of the North-South Axis (2009) and member appointed by Parliament to the Supreme Council of Justice of the Peace (since 2015).
He was Deputy Secretary of State and for Tax Affairs from 2017 to December 2022.