After a series of stints in the Canadian National Soccer League he eventually played in the USL A-League in 1998 with the Toronto Lynx, and later with the Montreal Impact.

After his release from Montreal he played with several clubs in the National Professional Soccer League, and in 2002 returned to the CPSL with the Brampton Hitmen.

Ionadi began playing at the college level in 1995 with Belhaven University, where he earned NAIA GCAC All-Conference Men's Soccer honors.

[6] In 1996, he played with Toronto Italia in the Canadian National Soccer League, where he assisted in securing a treble for the club.

[14][15] In 2001, Ionadi returned to the Canadian Professional Soccer League, and signed with expansion franchise the Brampton Hitmen, where he served as the team captain.

[16][17] His most notable achievement with the organization was in the 2003 season where he finished as the club's top goalscorer with 13 goals, and secured the teams first CPSL Championship.

[25] In 2018, he was named head coach and general manager for the Mississauga Metrostars in the Major Arena Soccer League.

[25] On April 10, 2008, he was selected as the Director of Business Operations for the Brampton Lions in the Canadian Soccer League (CSL).