She was born in Mumbai, India and raised in Nigeria, Africa until the age of seven, and then London until the age of nine. After, her family finally settled down in Canada. She is of Parsi descent.
Contractor is best known for her role as Layla Hourani on CBC's The Border, and as Kayla Hassan on 24, Sydney on Covert Affairs, and Farah Nazan on Heroes Reborn. Nazneen can currently be seen playing the role of Zara Hallam on the CBS TV series Ransom.