Şahin-Radlinger was developed by the youth system of
SV Ried, and his first experience of first-team football came during a loan spell at
Union St. Florian of the
Austrian Regional League Central during the 2010–11 season. Shortly afterwards, in June 2011, Şahin-Radlinger was signed by German club
Hannover 96. He spent the next two years as first-choice goalkeeper for Hannover's reserve team in the
Regionalliga Nord before joining
Rapid Wien on a two-year loan deal in the summer of 2013. On 30 January 2018, Şahin-Radlinger joined
Norwegian top-tier team
SK Brann on loan for rest of the 2018 season. Brann were given an option to sign him permanently at the end of the loan; however, the club decided against pulling the option and Şahin-Radlinger returned to Hannover 96 at the end of the season. On 26 June 2019, English side
Barnsley confirmed that Samuel had signed a permanent contract with Daniel Stendel's side. On 13 August 2020, he returned to his first club
SV Ried. On 1 September 2023, Şahin-Radlinger signed a three-year contract with
Austria Wien and was immediately loaned out to
Almere City in the Netherlands. ==International career==