Janko is playing at fullback for the U21s, but can also play as a winger.
"I don't mind where I play. It's nice to play in different positions. I think I prefer right-back a bit more, but Warren [Joyce] likes me to play in midfield or on the wing. There is more space at right-back," he told Inside United.
"I want to be successful with the Under-21s because we haven't had many games at that level. So I'm looking forward to that."