During the past couple of years, he has produced paintings that appropriate images from Bengali film posters, altered to serve his social and political messages.

He received his master's degree in Painting from the Faculty of Fine Arts, Maharaja Sayajirao University of Baroda in 1987.

[2] Although one of the most influential artist of his generation, Shishir is best known to a mass audience as a political cartoonist[3] for Bangladeshi largest circulation Bengali-language newspaper Prothom Alo[4] and an associate professor of the Faculty of Fine Arts, Dhaka University, Bangladesh.

He was a vociferous and early critic of the Ershad military junta, which frequently placed him at odds with the authorities.

His scathing critique of the Jamaat e Islami and 1971 war criminals made him a hated figure for the right-wing forces.