Paola Ferrari began playing basketball at age 7 at the club Deportivo Internacional in her native Asunción. She played her first South American Championship in Peru, in the cadet category, where she stood out as a top scorer of the tournament. She made her debut in the senior league of Paraguay at age 14, where she played for several teams. She had outstanding performances in the South American Championships at all levels, being proclaimed best player, top scorer, and best three-point shooter on several occasions. After training in the United States in 2003 at Tomahawk High School in Wisconsin, Ferrari played for Union University of Tennessee in 2004. A year later, she played for the University of Quevedo, where the team reached the semifinals. That same season, at age 20, she decided to jump to Spain to play for Alumisan Pio XII of Santiago de Compostela in Liga Femenina 2. After a quick adjustment period, she finished the season as the second highest scorer of the category. The following season she played for Joventut Mariana de Sóller in a bid for promotion, but they could not achieve it. In 2007 she debuted in the Liga Femenina for Baloncesto Rivas, but a lack of minutes made her change teams in December and finish a great season with Burgos. In 2008, after a season with Estudiantes, Ferrari returned to Sóller, where she achieved great numbers over four seasons. During those years she also played for the, where she entered the Ecuadorian league in 2011 and played in the South American Championship. In 2012 she suffered a serious injury, a ruptured anterior cruciate ligament of the knee, which kept her off the court until January 2013, when she returned to play for CB Avenida in Spain, winning the Liga Femenina. For the 2013–2014 season, she played for of the Liga Brasileña, where she won two more titles. She returned to Spain once again, for CB Avenida, where she won the Supercopa de España and the Copa de la Reina, completing all of the country's national titles. In 2015 Ferrari achieved this feat in her native country, winning the Metropolitan Trophy with Club Sol de América without losing a game, and being elected MVP. After signing for Stadium Casablanca of Zaragoza, she became the season's top scorer. In the 2016–2017 season she played in the playoffs for. In 2017 she returned to Stadium Casablanca. Ferrari plays internationally as a selection of Paraguay.
