Arun Rangachari is the nephew of Bollywood film director, Bharat Rangachari, who directed several successful films like Takkar and Zameen Aasman. Arun began as a journalist covering issues mostly related to the Information Technology. He subsequently moved to working in Public Relations and after working for various PR agencies, Rangachari shifted to Dubai in 1999. He is currently the Founder and Chairman at DAR Capital group, Private Equity arm and founded DAR Capital Group in early 2007. Arun Rangachari is also one of the key members of Dar Motion Pictures (owned by the DAR Capital Group), which is one of the leading production companies in India.

Their focus is mainly on content-driven cinema. Innovation and originality are some key factors which drive this production house, and they have produced a few such original films like The Lunchbox, Ugly, City of Gold and Haunted 3D. The distribution arm of DAR has also played a hand in the distribution of two Hollywood blockbusters in India– The Dark Knight Rises and Fast and Furious 6. Arun Rangachari and the DAR Company are renowned for the production of the horror-thriller Haunted 3D in 2011, which was the first stereoscopic horror film made in India. The Lunchbox, which was jointly produced by the DAR Company, was nominated for a BAFTA award in the category of Best Foreign Language Film in 2015. In his interview with Taran Adarsh in 2010, Arun makes mention of the necessity of content being the major factor which will drive the media sector in India. His and the DAR companies venture into cinema, as he comments, is solely revolved around this idea of content propelling the growth of Indian Cinema into new heights and them being around to be a part of this transformation.