The interim president is Michele Temer.
In his 1st week Temer is appointing his people to head the country's institutions to assure global investors and the country's voters - per Financial Times.
Temer appointed Henrique Meirelles as the Minister of Finance.
May 17, 2016 Meirelles selects Ilan Goldfajn, the chief economist at Brazil's largest non-state bank, Itaú Unibanco to replace Alexandre Tombini as the central bank president.
This is how the Financial Times described Goldfajn (emphasis mine):
Israeli-born Mr Goldfajn, who has a PhD from the Massachusetts Institute of Technology, was a central bank director between 2000 and 2003 and has worked as a consultant for the World Bank, the International Monetary Fund and the United Stations.
|Goldfajn, if a courtroom sketch artist drew him|
Following the nomination of Goldfajn, whose appointment must be ratified by the senate, Mr Meirelles also proposed on Tuesday [May 17] a constitutional amendment to grant the central bank formal autonomy.
Brazil's central bank is one of the few in the world that is not independent from the government[.]
Separately they mention that 70% of Brazilians support Rousseff's impeachment, only 1% would elect Temer as president.