Con Mika is from New Zealand and is from Samoan descent. He joined New Zealand Warriors from the local Auckland Rugby League competition where he played for Otanhuhu and the Tamaki Titans in the Bartercard Cup. He made two appearances in the Toyota Cup for the Junior Warriors but he could not break into the Warriors first grade team.
In 2009 he joined Newcastle Knights and made his first debut on the 31 May 2009 against Canterbury- Bankstown Bulldogs, he was released by the Knights after the season ended in 2011. On the 26th October 2011 Mika signed a two year deal to join Hull KR.