He managed Vrå IF, before moving to the women's topflight Elitedivisionen team Fortuna Hjørring in 1985, staying there for three years.

[3] He joined Fortuna Hjørring for a second stint in 1994, guiding the club to the Double in 1995, by winning both the Elitedivisionen and the Danish Women's Cup.

In the winter break, Christensen handed in his resignation, criticizing the AGF management for a lack of support and presence.

[11] As the positive surprise of the Danish Superliga 2005-06 season,[12] Viborg finished in fourth place, with the highest goal tally of the league.

With a series of transfer moves,[16] the Vejle squad found renewed optimism before the second half of the season.

In the winter break, Randers parted ways with seven players, bringing in four key signings in Anders Egholm, Yura Movsisyan, Søren Jensen, and Morten Karlsen.

[20] With a historic comeback of 16 successive games without losing, Christensen guided Randers two points clear of relegation and kept the club in the top flight.

On 7 May 2011 he was announced as the successor of Kim Poulsen at Danish 1st Division club FC Hjørring on a contract running for the rest of the 2010–11 season.

He had to resign in January 2014 with Viborg in an acceptable 9th place due to a knee injury that prevented him from performing his duties.

[25] On 17 January 2017, Christensen was appointed director of football in then Jutland Series (fifth division) side Silkeborg KFUM.