Career
Early Lainer started his career with the local club SV Seekirchen. In 2006, he came to In 2010 he played his first match for the second team of Red Bulletin. His next step was SV Grödig, where he played on loan.
In 2012, he returned to Salzburg where he was in the squad of Football Club Liefering, the second team of Football Club Lainer is the son of Leo Lainer, who played for SV Austria Salzburg and the Austrian national team
On 1 July 2015, Lainer transferred to Football Club on a three year contract for £140,000.