He was a part of the Norwegian team that played in the 2013 UEFA European Under-21 Championship, and has also been capped for Norway at senior level.

[4] He first represented Norway at under-16 level,[5] and after his performances for the under-18 team he was wanted by the Italian side Sampdoria.

[14] Konradsen has represented Norway from under-16 to under-23 level,[5] and was included in the Norwegian under-21 squad for the 2013 UEFA European Under-21 Championship.

[15] Konradsen started the opening match against Israel U-21, and had one shot in the crossbar and another in the post when Norway drew 2–2.

[16] In the second match of the tournament against England U21, Harmeet Singh was chosen ahead of Konradsen in the starting line-up.