Magnin made 1 appearance for the Switzerland national football team in a 1-0 2002 FIFA World Cup qualification win over the Faroe Islands on 2 June 2001.
[1] A longtime youth coach for Young Boys, Magnin signed a 2-year contract to manage Xamax for the 2019-2020 season.
[2] On 4 March 2024, he was appointed caretaker manager of Young Boys, following the termination of head coach Raphaël Wicky.
[4] In this time, he successfully led Young Boys to defend the Swiss Championship title, their 17th in total and their sixth in just seven years.
He returned to the U21s at the end of the year, with Giorgio Contini chosen as head coach of the first team on 18 December 2024.