After only playing three games for Färila he was signed by fourth tier club Sandvikens IF where he remained for the following two and a half years. During his time with the club they played against Malmö FF in the Svenska Cupen where Stadler left a good impression on the Malmö assistant manager Jörgen Pettersson. And when Pettersson took over as manager for Superettan side Landskrona BoIS he signed Stadler to the club. At the end of his first season with Landskrona the club was relegated but the following summer he returned to Superettan when he was bought by league leaders Östersunds FK. The club was promoted to the top tier at the end of the year and in the third round of the 2016 Allsvenskan Stadler both assisted and scored for the first time in a top flight as Östersund recorded their first ever Allsvenskan victory.