Karadi was born and raised in Bat Yam, and currently resides in Rishon LeZion.
Karadi served in the Paratroopers Brigade in the Israel Defense Forces and attained the rank of major.
He left the army in 1984 and immediately joined the Israel Border Police.
During this time, he oversaw the preparation and participation of the police in Israel's unilateral disengagement plan of the summer of 2005.
[1] Karadi resigned his position on February 18, 2007, following the publicity of the findings of the Zeiler Commission, and continued his post until May 1, 2007, when Dudi Cohen, the next general commissioner, assumed office.