He worked as a teacher in Košice, later as a specialist worker at the Institute of Experimental Physics of Slovak Academy of Sciences.

In the field of poetry, he observes, analyses and decrypts the chaotic tired world, denounces the prevailing moral circumstances, the differences in its perception from without and within.

Among other things, Brenkus writes in neo-romantic style, as well as criticizes existentialism and the civilization progress which forces a human to find his own survival instinct.

Surrealistic characters in author's stories are torn between the ideal and the real, and disturb an accepted order.

Through expressive and mystical symbolism, dramatic and grotesque scenes, Brenkus displays rebellion against elitism and decline of contemporary society.