A lejandro Bulgheroni, along with his late brother Carlos, inherited and massively expanded Bridas Corporation, an Argentine energy company founded by their father in 1948. The brothers transformed the firm from a local supplier to the state oil company into a major international player in the oil and gas exploration and production industry. Their ambitious vision led them to pursue projects across Latin America, Central Asia, and beyond.

A pivotal moment for the company came in 2010, when they sold a 50% stake in Bridas to the China National Offshore Oil Corporation (CNOOC) for $3.1 billion. This joint venture, Pan American Energy Group, became Argentina's second-largest oil and gas producer. Following his brother's death in 2016, Alejandro continued to lead the family's energy interests. In addition to his core energy business, he has diversified his investments into agriculture and is particularly passionate about winemaking, owning several high-end wineries in Argentina, Uruguay, California, and Tuscany.