Hayem was educated as an economist with her first degree from the Higher School of Economics and Business in La Libertad.

She studied in America at Tufts University and at the Ecole Supérieure Robert de Sorbon in France, and as a result she also speaks Spanish, English and French.

[1] In 2003 she was in Geneva employed at El Salvador's Permanent Mission to the World Trade Organization.

[2] She was self employed when she became one of the last people to be appointed to President Nayib Bukele cabinet of eight men and eight women in 2019.

[1] El Salvador has poor relative growth and Hayem plans to reactivate her country's economy.