Nikas is a two time winner of the National Premier Leagues NSW with Sutherland Sharks FC (2009) and Sydney United 58 (2016) and the Waratah Cup (2015, 2016).

Nikas made his first team debut for the Central Coast Mariners coming on as a substitute for Nicky Travis in a 2–0 home defeat to the Wellington Phoenix on 31 December 2009.

[3][4] In 2010 after being released by Central Coast Mariners he returned to the Sutherland Sharks playing 9 times and scoring 4 goals.

Nikas also scored a brace in the 2015 FFA Cup Round of 32, as his side beat South Hobart FC on penalties.

The following season, Nikas scored an incredible 18 league goals from midfield as Sydney United 58 took out the premiership.