He began his film career as an ad-film maker; later worked in some movies as Assistant director.

[1][2] Sajan Mathew made his directorial debut Oru Murai Vanthu Parthaya in 2016.

[3][4] Sajan Alummoottil started his career in films with director Deepu Karunakaran.

He assisted Vasudev Sanal in God's own Country (2014) and Dileesh Nair in Tamaar Padaar (2014).

[2] Oru Murai Vanthu Parthaya(2016) was his directoral debut.