Hussein began playing football with his local club Bromstens IK at the age of 7, and joined the AIK youth academy in 2014.
[1] On 20 January 2018, Hussein signed his first professional contract with AIK, keeping him at the club until 2021.
[2] He made his professional debut for AIK in a 2–0 Allsvenskan win over IK Sirius on 27 April 2018.
[3] On 30 August 2023, Hussein signed a three-year contract with Hertha BSC in Germany.
[5] He made his full international debut for Sweden on 9 January 2023, replacing Hugo Larsson 68 minutes into a friendly 2–0 win against Finland.