Career
He is currently playing with JYP Jyväskylä in the Finnish Liiga. Niku was selected by the Winnipeg Jets in the 7th round (198th overall) of the 2015 National Hockey League Entry Draft. Niku made his Liiga debut playing with JYP Jyväskylä during the 2014-2015 Liiga season.
Niku played in both the 2014 IIHF World U18 Championships, and the 2015 World Junior Ice Hockey Championships.