[4] He served in Itamaraty's division of Mercosur affairs from 1991 to 1995, and from 2007 to July 2010 was a deputy chief at the Brazilian Embassy in Ottawa.[2] In June 2018, he was promoted to the rank of First Class Minister in the Brazilian Foreign Service, a career diplomat's top rank, that allows them to be posted as Ambassadors. In the custom of the Brazilian Foreign Service, First Class Ministers are styled "Ambassador" even when they have not yet assumed the direction of an Embassy, as is the case with Araújo.