He attended Alliance High School in Tel Aviv.
He began acting at the age of 14 and appeared in serval television advertisements. At 18 he planned to study at the New York University, however his mother suffered from cancer, so he stayed in Israel. She died when Kornick was 19 years old.
After working for the army he took part in several theatre plays.
One of these theatre plays was Black Box, which is based on the book by Amos Ounces Since 2005 he is playing the main character Avi Moskovich in HaShminiya who is a computer specialist.
From 2009-2012 he played one of the main character in the Israeli television series Split.