[2] Bitter began his football career at the age of six with local amateur side RKSV DCG in his hometown Amsterdam.
[3] Signing his first professional contract with AFC Ajax on 9 June 2011, a three-year deal binding him to the club until the summer 2014.
[citation needed] On 28 October 2013 Bitter made his professional debut for Jong Ajax having recently recovered from a shoulder injury, he was substituted on in the 72'-minute of the match for Tobias Sana, in the 4–0 away loss against FC Dordrecht.
[6] Bitter made his debut for the Netherlands under-17 squad in a friendly match against Greece U-17 on 8 February 2011, which ended in a 0–1 win for the Dutch.
[8] The three qualification matches in which Bitter did appear in were against Austria U-17, Croatia U-17 and Portugal U-17, which ended in 2 wins and a draw for the Netherlands.