Stewart made the recruiters notice after a starring performance for WA in the 2013 NAB Under-16 Championships. Kade was named WA’s most valuable player for the carnival. With dedication and support from his family, Kade and his family made the six-hour round trip from Katanning to training in Perth twice a week. In 2013 he made his senior debut for the Katanning Wanderers in the Upper Great Southern Football League.[1]
He continued to impress recruiters by good display of form in the 2014 and 2015 NAB AFL Under-18 Championships.
Hawthorn's Recruiting and List Manager Graham Wright said, "Kade's an AFL Academy player, he is also a left-footer, a very good user of the ball and good overhead mark for his size."[4]
Hawthorn upgraded Stewart from rookie to its senior list on 1 June 2016, after Ryan Burton was placed on the long-term injury list.[5] He then made his AFL debut in round 11 of the 2016 AFL season against Melbourne.
He was delisted by Hawthorn at the conclusion of the 2017 season.[6]