His breakthrough came when he came in as a substitute and scored two goals against PFC CSKA Moscow in the 1999–2000 UEFA Champions League 2nd qualifying round, second leg.

With the club, Hoseth won the Norwegian Cup in 2013 after scoring defining goals both in the semifinal against Lillestrøm and later in the final against Molde's main rivals Rosenborg.

[5] In the club's first ever season in the top flight, Hoseth helped them stay up and finish seventh on the Eliteserien table.

[6] Hoseth made a total of 37 appearances and scored eleven goals for Norway at youth international level.

[7] Hoseth made his senior debut for Norway on 25 April 2001, as a half-time substitute for Dan Eggen in a 2–1 home friendly win over Bulgaria.

[9] On 21 November 2022, KÍ Klaksvik announced the appointment of Hoseth as their new Head Coach, on a two-year contract.

[10] On 11 January 2024, it was announced that he would leave Klaksvik in order to become new manager of Danish Superliga club Lyngby Boldklub.