Stefan Aigner

In 2012, Aigner was announced at Eintracht Frankfurt on a three year contract. On 17 September 2014, he signed a four year contract extension until 30 June 2018. In July 2016, Aigner was announced at 1860 Munich on a four year contract. On 27 July 2017, Aigner was announced at Colorado Rapids on a three year contract. He won the 2017 September Player of the Month award for assisting Dominique Badji, and for scoring his first MLS goal against Montréal Impact on 30 September 2017. Aigner won the 2017 October Player of the Month award for scoring his second goal in MLS. On 4 January 2018, he began a two week training stint with Hoffenheim to gain fitness before Colorado's pre season. On 8 June 2018, Aigner mutually terminated his contract with Colorado Rapids. In 2019, Aigner was announced at Wehen Wiesbaden on a one year contract. On 12 July 2020, he signed a new one year contract with the club. In June 2021, Aigner announced his retirement from professional football.

After his retirement, in October 2021, Aigner rejoined SVWW as a scout. He worked as an intern with FC Augsberg, before being appointed as assistant coach of the U19 team in July 2023. In July 2024, Aigner was announced as assistant coach of the FC Augsberg U23 team.