Cristina Junqueira (born September 1982) is a Brazilian businesswoman who is the co-founder of Nubank. With a background in engineering, she transitioned from management consulting to supervising a credit card portfolio at a major Brazilian bank. David Vélez invited her to join him in co-founding Nubank, which is now the world's largest neobank, with a focus on providing digital financial services through a user-friendly app, in 2013. Nubank serves over 135 million customers across Latin America and is one of the world's largest digital-banking platforms. Junqueira has been a strong advocate f