Faria started her career as a debater participating in a BTV debate show. She is a national debate champions in 2010 and 2011. She started her career in show business as a model in several television commercials. Throughout her career, she has worked in various television commercials and radio programs. In 2014, she hosted a reality show, Fair and Handsome: The Ultimate Man.
In 2015, she signed with Jaaz Multimedia to appear in two films, titled Aashiqui and Hero 420. The former, being her debut film, released in late 2015 while the latter released in early 2016. The former also earned Mazhar a Meril Prothom Alo Award for Best Newcomer in film or television. Both films were Indo-Bangladeshi joint ventures, being co-produced by Eskay Movies.
In 2016, Mazhar also starred in another Indo-Bangladeshi co-production, Badsha - The Don, directed by Baba Yadav. The film also starred popular Indian actor Jeet, and is considered a turning point in Mazhar's career, earning Mazhar a Tele Cine Aw