[8] Beister made his Bundesliga debut on 22 November 2009 against VfL Bochum, coming on as a late substitute, in a 1–0 loss.

[4][11] Beister made his Fortuna Düsseldorf debut, where he started and played for 65 minutes, in a 1–0 loss against TuS Koblenz in the first round of the DFB–Pokal.

In the 2011–12 season, Beister continued to be a first team regular at Fortuna Düsseldorf and started well when he scored two goals in two games against Eintracht Frankfurt[17] and TSV 1860 Munich.

[19] He continued to play in good form when he set up two goals in a 4–2 win over Karlsruher SC on 10 September 2011[20] and then scored two more braces by the end of 2011 against Energie Cottbus[21] and FSV Frankfurt.

[32] After his two–years spell at Fortuna Düsseldorf came to an end, Beister was linked with a move away from the club, with Borussia Dortmund interested in signing him.

[34] At the start of the 2012–13 season, Beister found himself in a competition over a first team position in midfield with Ivo Iličević and Gökhan Töre.

[35] Nevertheless, Beister received a handful of first team appearances on his Hamburger SV return and scored in a 4–2 defeat to Karlsruher SC in the first round of the DFB-Pokal on 19 August 2012.

[48][49] In January 2015, he made his return from injury, playing in a friendly match against Eintracht Frankfurt which Hamburger SV won 3–2.

[51][52] In May 2015, his contract at Hamburger SV was terminated one year early by mutual agreement[53][54] because he was not expected to feature in the next season.

[64] On 18 October 2016, it was announced that Beister signed for A-League club Melbourne Victory on a one-year loan.

[65] Beister made his debut for Melbourne Victory on 12 November 2016, coming on as a substitute for Fahid Ben Khalfallah.

[70] Beister made his international debut for the Germany U19 national team on 11 February 2009 in a friendly against Greece and earned between November 2009 five caps.

Born in Göttingen, West Germany, Beister lived in Lüneburg for seventeen years before moving to Hamburg, where he attended boarding school.

[3] While being sidelined with a knee injury, Beister opened the Immerschlau auxiliary school in Hamburg to help children with education.