Devan started his career as an assistant director on Cheran's 2000 film Vetri Kodi Kattu. His first independent direction opportunity came from S Pictures with the 2006 film Imsai Arasan 23rd Pulikecei. When the plot was pitched to director Shankar, the latter was interested and agreed to collaborate with Devan.[1] The film featured comedian Vadivelu in the lead role for the first time. The film went on to become a success.
In 2021, Devan directed the anthology film Kasada Thapara, co-produced by Venkat Prabhu. The story is split into six portions with each portion boasting of different technicians, and a collection of short stories connected by a hyperlinked narrative.[8][9] In 2022, Devan directed Kottai Pakku Vathalum Mottai Maadi Sitharum, an episode of the anthology series Victim.
Devan is currently working on his next film Boat, starring Yogi Babu.