[1] He is known for his work in movies including Zubeidaa (2001), Khiladi 786 (2012), Kaante (2002), Stanley ka Dabba (2011), The Ghazi Attack (2017), Delhi Belly (2011) and serials like 24: India (2014).
Singh studied acting overseas at the Royal Academy of Drama and the British Film Institute in London.
[6] Singh acknowledged that his mother's poetry influenced him as a writer, both genetically and through the inspiration it provides, also expressing the enjoyment of scriptwriting and its connection to his previous experience in street theatre.
[7][6][8] Rahul stated that he believes in slowly and steadily building his career, and his acting skills have been appreciated, leading to more offers.
He portrays an extremely colorful antagonist whose character undergoes a transformation from being funny to ironical to serious to tragically comic and ultimately becomes an action-oriented figure.
[17] He appeared in Chandraprakash Dwivedi's movie Zed Plus (2014) playing the title role of a commando, and in John Abraham produced film, 'Satra Ko Shaadi Hai'.
[3] Rahul Singh received praise for his performance in the role of Pakistani naval commander Razaq Moh'd.
[18] Despite losing 18kg due to health issues, he continued playing the role of Aurangzeb in 2017 series Peshwa Bajirao.
[21] Singh is known for writing screenplays and dialogues including Sanjay Dutt starrer Kaante (2002) and Kachchi Sadak (2006).
Rahul has performed in The Shawl by David Mamet, Hamlet and The Merchant of Venice by Shakespeare, and The Black Cat by Edgar Allan Poe, among others.