Born on 28 February 1972, Adajania entered the film industry directing and co-writing the English-language psychological drama Being Cyrus (2005) starring Saif Ali Khan, Naseeruddin Shah, Dimple Kapadia, and Boman Irani. The film earned critical acclaim, despite being commercially unsuccessful. Film critic Rajeev Masand called it "a stylish thriller that's told in an immensely engaging style."
Adajania's second directorial venture was the Hindi-language romantic comedy Cocktail (2012). The film was written by filmmaker Imtiaz Ali and produced by Saif Ali Khan and Dinesh Vijan under their banner Illuminati Films. The lead roles were played by Khan, Deepika Padukone, and debutante actress Diana Penty, while Kapadia and Boman Irani featured in supporting roles. After its three-week run, Box Office India declared the film a hit in India and abroad. It earned mixed to positive reviews from critics.
Adajania's third directorial venture, the satirical comedy Finding Fanny, was released in September 2014 in both English and Hindi. The film starred an ensemble cast including Shah, Kapadia, Pankaj Kapur, Padukone, and Arjun Kapoor. The film received mostly positive reviews, and had a steady run at the box office.
His fourth directorial project was a Hindi film, Angrezi Medium, starring Irrfan Khan, Radhika Madan and Deepak Dobriyal which released on 12 March 2020 but had a limited release due to the COVID-19 pandemic.
Adajania's fifth directorial venture was an OTT series called Saas, Bahu Aur Flamingo which stars Dimple Kapadia, Radhika Madan, Angira Dhar and Isha Talwar which is about a matriarch in a rural village who runs a drug business with her daughter and her two daughters-in-law. The show streamed on 5 May 2023 with positive reviews on Disney+ Hotstar.
His sixth directorial venture is murder-mystery drama called Murder Mubarak which stars Sara Ali Khan, Vijay Varma, Dimple Kapadia, Pankaj Tripathi, Karisma Kapoor, Sanjay Kapoor, and Tisca Chopra. It is an adaptation to the best-selling novel, Club you to Death, by Anuja Chauhan. The film will be streamed on Netflix in 2024.
