Shaji Kailas is best recognized for his alliance with screenwriters Ranijth and Renji Panicker. With Renji Panicker, Shaji made famous political spine-chiller such as Sthalathe Pradhana Payyans, Thalastaanam , Mafia, Ekalavyan, The King and Commissioner. Shaji's alliance with Ranijth brought forward stories set in antic backdrop, such as Narasimham, Aaraam Thampuran, and Valliettan.
Shaji Kailas's directorial debut was in 1989 with the flick News, this analytical thriller was semi hit. Although Shaji garnered attention of audiences with his first venture. His next release Sunday 7 PM, which released in 1990 didn’t do well at the box office. In the very same year, he directed Dr. Pasupathy, a political banter, scripted by Renji Panicker, turned out as one of the biggest hit of the year.
His biggest successful movie came in 1994, Commissioner, which broke many box office records.
Shaji Kailas married Annie in 1996, in a low key wedding where only the family members and few close friends were invited. The couple is blessed with three sons Jagan, Sharon and Rooshin.