On 19 April 2015, she became the first Brazilian in 27 years to win a title on the WTA Tour, beating Yaroslava Shvedova in Bogotá 7–6, 6–1.

At a very young age, her father moved to Curitiba, where he had two brothers, and once he got a job at a tennis academy, he arranged for the rest of the family to follow him.

[3] In April 2015, Pereira reached the final of Copa Colsanitas where she won her first career title beating fifth seed Yaroslava Shvedova, in straight sets, to become the first Brazilian woman to win a WTA Tour singles title since 1988, and jumping 130 places up the WTA rankings to No.

She was just the second Brazilian in the Open era to win a tour title in Brazil – Niege Dias achieved the feat once, doing it over in Guarujá in 1987.

In September 2020, Pereira announced her retirement at the age of 32, declaring she had lost interest in training and travels, while expressing satisfaction with how her career went, with two WTA Tour titles and "always surpassing my expectations".