[2] After leading Nardo to the 1997 Norwegian Junior Cup final where they finished runners-up, Nordsteien took over Kolstad IL in 1998.

[8] He was hired as player developed in Rosenborg, succeeding Bjørn Hansen who retired.

[12] He left Rosenborg after the 2012 season to become head coach in the Norwegian First Division, taking over Ranheim in 2013.

[13][11][14] In 2016 he returned to Trondheims-Ørn, but already in June he announced his intention to leave the club, and was replaced in September.

[15][16] During the closing days of the 2017 season, it was announced that Tromsø IL hired Nordsteien as a coach developer.