Malik began her singing career by lending her voice for the movie Biwi No.1. She went on to record her first vocal track at the age of 5. This was followed by other movies where Malik sang as a child artist, such as Mela and Badal.
In the year 2006, director J.P.Dutta cast her as the singer for lead actress Aishwariya Rai in the movie Umrao Jaan. Her next release was the song "Chal Mera Hath Pakad Le" from the Satish Kaushik movie Teree Sang. During the film's pre-release the song gained significant popularity after Malik's impromptu live performance on the widely watched music reality show Indian Idol.
At the age of 16, Malik sang "Talli" from the movie Ugly Aur Pagli, a fusion of grunge and rap music. The song debuted at the No.1 position and remained the top dance song for that year.
Malik's discography includes various popular songs such as "Suno Suno" from Gali Gali Chor Hai, "Big Fat Indian Wedding" from the movie Yeh Jo Mohabbat Hai, "Ek Mulaqat" from the movie Sonali Cable. She also sang the Western Version of "Old School Girl" from the movie Tanu Weds Manu Returns in 2015. Recently Malik sang "Time Lagaya Kaiko" in Welcome Back.
In October 2015, her first indie single as a singer, "Lamhein", an official adaptation of Coldplay's "Paradise", was released under EMI Records India. The music was recreated by her father, Anu Malik, and the lyrics were penned by Manoj Muntashir. A music video, directed by Mohit Suri, featured Malik and Mohit Marwah.
Malik launched her first English single "Let Me Come Home" in February 2017; the song is written, composed and sung by her. The single went on to quickly trend in the north-east, the Western Music capital of India. Malik put the song on YouTube first, where it grabbed the attention of the programming execs at VH1. It slowly climbed the popularity charts, trending among singles by renowned international artists.
She was one of the composers for the 2017 Hindi-language Indu Sarkar.
After her graduation from university, Malik released the English single "The Graduation". The song has been composed, written and sung by her. It was an experimental release by India's premier Bollywood portal Bollywood Hungama and was only released online.
Malik received the following awards: