Sesaker made his international début for Norway at the 2012 Winter Youth Olympics, throwing fourth stones on the team, skipped by Markus Skogvold.

[2] Sesaker was then paired with Kim Eun-bi of South Korea for the mixed doubles competition.

The team made it all the way to the final where they faced off against the pair of Michael Brunner of Switzerland and Nicole Muskatewitz of Germany.

[9] Sesaker continued to play for the Ramsfjell rink the following season, winning the 2020 Norwegian Men's Curling Championship.

[12] The team was chosen to represent Norway at the 2022 World Men's Curling Championship,[13] where they finished in 10th with a 5–7 record.

[17] The team was chosen to represent Norway once again at the 2023 World Men's Curling Championship,[18] where they went 10–2 in the round robin.

This put the team in the playoffs, where they lost to Italy (skipped by Joël Retornaz) in the qualification game.