Before starting his acting career, he was a renowned
Bengali teacher at the Haque Coaching Centre in
Malibagh. Karim began working as a theatre artist in the late 1980s with
Nattokendro, where he has continuously played lead roles in theatre productions for 16 years. He has collaborated several times with actor
Chanchal Chowdhury. In 1989, Karim participated in an audition initiated by
Tariq Anam Khan, and out of 1400 participants, 25 were selected and given the opportunity to work in the theatre, including Karim. Then he joined the theater troupe "
Nattokendro" and worked for 16 years continuously. After over a decade in theater, Karim debuted in television in 1999 with the single-episode TV play
Atithi, directed by Ferdous Hasan and aired on
Channel I. He has been a regular on the TV screen since February 2005. ==Career==