Sérgio Pinto, Hauger got the shirt-number 15. Hauger made his debut for Hannover 96 on 6 August 2011, when he played the last 21 minutes as a substitute for Pinto in the opening match of the 2011–12 Bundesliga against TSG 1899 Hoffenheim. Hauger got limited playing time in Hannover and joined Lillestrøm on loan in August 2012. He made his debut for the club against Fredrikstad on 1 September 2012 when he replaced Espen Søgård at half time. Hauger joined the Swedish champions IF Elfsborg on a free transfer in January 2013, after breaking his contract with Hannover 96, and signed a three-year contract with the club. Elfsborg's head coach Jörgen Lennartsson, whom also coached Hauger in Stabæk in 2012, was pleased with the signing and praised Hauger's passing abilities. On 26 January 2017, Hauger signed a three-year deal with Strømsgodset. He was released at the end of the 2019 season. He joined Bærum SK ahead of the 2021 season. International career Hauger was a regular in Norwegian youth teams and became a part of the under-21 team in 2005. He played 14 matches for Norway U21 between 2005 and 2006, and a total of 45 matches for different Norwegian youth teams. When Kristofer Hæstad and Christian Grindheim was made unavailable for the friendly matches against Mexico and the United States in January 2006, Norwegian national team coach Åge Hareide decided to call up Hauger as replacement. This was Hauger's first call-up for the senior team, and he made his debut for Norway when he replaced Magne Hoseth at half time in the 2–1 loss against Mexico. Hauger was again called up for the national team after impressing play for Stabæk in 2008, and played the 2010 World Cup qualifier against Netherlands on 15 October 2008, almost three years after he was last capped for Norway. Hauger soon became a regular as a holding midfielder in Egil "Drillo" Olsen's team, and started 18 consecutive national team matches until Håvard Nordtveit was chosen ahead of Hauger for the UEFA Euro 2012 qualifying match against Denmark on 6 September 2011. After some time in Germany, Hauger was left out of the national team squad, as he was not playing regularly in Hannover. After he joined Lillestrøm on loan, he was again called up for the 2014 World Cup qualification matches against Cyprus and Slovenia in October 2012, but did not play any