He was also known as voice actor, in particular for providing the Hungarian dubbing of Shrek from the movie of the same name.

Gesztesi graduated from the Academy of Drama and Film in Budapest and, until 1990, he was a member of the Thalia Theater company.

[3][4] Described as one of Hungary's best-known actors,[5][6] Gesztesi played in numerous Hungarian TV and cinema productions,[3][7][8] including Magyar Vándor in 2004, Just Sex and Nothing Else in 2005 and Children of Glory.

[7] He voiced Shrek in the Hungarian version of the film.

[14] On 4 January 2020, Gesztesi died from a heart attack in Budapest while in his car.