He is best known for the television comedy sketches performed by him together with leading Bulgarian actors as Vasil Popov, Georgi Partsalev, Stoyanka Mutafova and others.

[1] He is also known for the numerous roles on the stage of the Satirical Theatre „Aleko Konstantinov“, Sofia where he remained until his untimely death in 1986.

[1] Some notable appearances on the stage include the plays “Marriage” by Nikolai Gogol, “Doctor”[2] by Branislav Nušić and “January”[3] by Yordan Radichkov.

Kasimov is in the cast of the popular TV musical The Phoney Civilization released by the Bulgarian National Television in 1974.

[4] The following table presents the Kasimov's appearances on the stage of the Satirical Theatre “Aleko Konstantinov”, Sofia.