Career
He is a 1.91 m tall Point guard. In November 2011 he joined OKK Spars, previously played for Zlatorog Laško and Postojna. On February 25, 2013, he signed a four-year contact with OKK Spars.
After rumors in early June, Nikolic had signed officially on July 7, 2015 with German champions Brose Baskets for four years.
He will also play for farm team Bike-Café Messingschlager Baunach in the ProA League. Nikolić played for Slovenia U-16, U-18 and U-20 national team
He played three games, including the one against the United States of America.
Aleksej in the son of David and Jana Nikolić. His father was a basketball player, played for Postojna, and was an assistant coach of Slovenian senior national team from 2004 to 2006.
Currently he owns Gostilna Čuk.