Based in Portugal since 1995, de Souza was Head and chair, Department of History in the Universidade Lusófona de Humanidades e Tecnologias from 1999 to 2014.
De Souza has been based in Portugal since 1995. He served as the head and chairman of the history department at the Universidade Lusófona de Humanidades e Tecnologias from 1999 to 2014.