After a year in Honka´s senior squad it was announced that Ojanen was leaving the team in an international transfer. It was later announced that his new team was Greuther Fürth.
Ojanen has competed on the Finland national teams at the U15-U21 levels and has been a member of the national team program since 2017. He has 26 caps for Finland youth national teams. He won the International Federation Cup in Latvia with the Finland U17 team in 2018 and captained the Finland U15 and U16 sides in 2017 and 2018.