Karthik had intended to direct
Jigarthanda first but could not fund the project. He then came up with the story for the low-budget
Pizza. The film was a commercial success, remade in Hindi, Bengali and Kannada. This allowed him the opportunity to make
Jigarthanda, which received positive reviews and earned actor
Bobby Simha a national award. Subbaraj was praised by
S. Shankar and
Mani Ratnam. His third movie,
Iraivi (2016), received positive reviews, and Subbaraj was praised for the film's portrayal of society's treatment of women. The movie also observed the various ways men's attitudes and behaviors impact women throughout life. He also showcased the pain he went through from the producer of his second film, through the character of
S. J. Suryah. He then went on and directed a silent thriller,
Mercury (2018), starring
Prabhu Deva in the lead, which was not a commercial success. He produced
Kallachirippu, a web series under his banner
Stone Bench Creations. Subbaraj directed the action drama
Petta (2019) with
Rajinikanth's 166th film. He also produced the Amazon original movie
Penguin starring
Keerthy Suresh in the lead role. He then produced the Hotstar Originals web series
Triples starring
Jai and
Vani Bhojan. He then directed Miracle, a short film for the Amazon Prime anthology film
Putham Pudhu Kaalai (2020), and Peace, an episode for the Netflix anthology web series
Navarasa (2021). In 2023, he went on to direct
Jigarthanda DoubleX. He then directed
Retro, starring
Suriya and
Pooja Hegde. It opened to positive reviews from critics praising his direction and storytelling. The film became a commercial success at box office. == Filmmaking style ==