Landertinger debut dina usum 2007/08, sarta breakthrough badag na sumping salila usum 2008/09, dimana anjeunna, sakumaha tina 22 Maret 2015, ngabogaan opat belas podium finishes, kaasup medali emas dina 15 km massa mimiti di 2009 Dunya Championships di Pyeongchang
sarta meunang di mass start 15 km di Khanty-Mansiysk dina ronde terakhir musim 2009-10. Manéhna ogé réngsé kadua dina relay lalaki di same World Championships, barengan Daniel Mesotitsch, Simon Eder jeung Christoph Sumann.