Rosniak is well known to Australian audiences and has worked alongside some of the most iconic names in Australian film and television. His most notable credits to date are David Michôd’s feature film War Machine starring Brad Pitt, the Oscar® nominated Animal Kingdom, Sweet Talker starring Bryan Brown and Karen Allen, and the Australian cult classic Sample People starring Ben Mendelsohn, Joel Edgerton and Kylie Minogue. Rosniak’s more recent film credits include Down Under, Broke, Locusts and the Flynn brothers feature comedy No Appointment Necessary. His more recent TV credits include Jungle Entertainment’s ABC comedy series Squinters starring Tim Minchin, Roadshow’s Les Norton starring Rebel Wilson and FX’s Mr Inbetween starring Scott Ryan.
Rosniak was the recipient of the 2015 Best Actor Award at the Canberra Short Film Festival for his portrayal of “Red Elvis” in Florence Has Left the Building starring Jacki Weaver, which also won the 2015 AACTA Award for Best Short Fiction Film. He is a co-founder of Full Mumsies Films.
Rosniak is currently in pre-production for the feature film Last Autumn which will commence shooting mid-2021.