Growing up in the Austrian market town of
Mattsee, Baumgartlinger began playing football at local USC Mattsee at age five. In 2001, he left Austria to join the renowned youth academy of
1860 Munich. There he ran through all the youth teams and eventually was called to their first team in 2007. After having played 13 times, mostly as substitute, in the 2007–08 and 2008–09 seasons, he accepted a call from Austrian club
Austria Wien to return to his homeland after eight years. In
Vienna, Baumgartlinger spent two successful years, becoming a regular for his club as well as for the
Austria national team. This attracted the attention of
Bundesliga team
Mainz 05, which acquired his services for a transfer fee estimated at €1.1 million. On 19 May 2016, it was announced Baumgartlinger had signed a four-year contract with
Bayer Leverkusen. On 16 August 2022, Baumgartlinger joined
Augsburg on a one-season contract. He made his debut against Mainz 05 on 20 August 2022. Baumgartlinger announced his retirement from professional football on 24 July 2023. ==International career==