Career

He played for the youth teams of DJK Sonnen, Football Club Sturm Hauzenberg, 1. Football Club Passau, SpVgg Grün-Weiß Deggendorf, and SpVgg Greuther Fürth. Steininger made his professional debut for Regensburg on 2 August 2014 in a 3.

Liga match against Stuttgarter Kickers.

Regensburg lost the match 1–3. On 5 March 2014, he made his debut for the German U19 as he came on in the 89th minute in a friendly against Italy.