Career
Croatia
Mikulić began his career in the youth ranks of top Croatian side Dinamo Zagreb before going on loan to Croatia Sesvete during the 2004 season. After one season with Sesvete he moved to Croatian top flight side NK Zagreb and remained there for five seasons, playing 49 league games for the team in total. United States
Mikulić officially signed with the Chicago Fire on January 6, 2011 as a free agent.
He made his debut for his new club on March 19, 2011, in Chicago"s 1-1 tie with Football Club Dallas on the opening day of the 2011 Master of Library Science season.
At the end of the 2011 season, Mikulić left Chicago to return to Croatia due to family reasons. Back to Croatia
After returning home from the United States of America, Mikulić was a free agent for seven months.
After failing to find a club in such a long period, Mikulić agreed to sign for second division club HNK Gorica.