He has composed music for more than 5000 advertisements, programmed music for many major composers and composed the music for nearly 50 Indian films to date. He has composed the background score and songs for films like Flash (2007), Sagar Alias Jacky Reloaded (2009), Anwar (2010), Ustad Hotel (2012), 1983 (2014). He has also done the background score for Notebook (2006), Big B (2007), Mission 90 Days (2007), Poi Solla Porom (2008), Evidam Swargamanu (2009), 1983 (2014), Bangalore Days (2014).
He did the keyboard programming in popular songs like "Aankhon mein teri"" (Om Shanti Om) and "Ek Main Aur Ek Tu Hai" (Bluffmaster).
His entry into the film industry came when director Roshan Andrews approached him with an offer to compose the background score for his movie Notebook which made him one of the most demanded background scorers in the Malayalam movie industry. He then went on to compose the background score for the movie Big B, starring Mammootty, which marked his breakthrough in the film industry.
Director Sibi Malayil approached him to compose the soundtrack and background music for his Mohanlal production Flash. His next project as a composer was in Amal Neerad"s big budget movie Sagar Alias Jacky Reloaded.
His work in this movie was praised by the audience.
The songs he composed for Amal Neerad"s Anwar featured in the charts for many weeks. His songs and background music in the Malayalam film Ustad Hotel made him one of the leading composers in the film industry. Gopi Sunder is from a family of film personalities.
His father Suresh was in the theatre and recording studio business.
He is also related to the filmmaker Ramu Kariat. Gopi married Priya on 19 January 2001.They have two children,Madhav sunder and yadhav sunder.