If they're hiring people who have no more than 2 years of experience they must understand that it will also take a senior like you to be an almost full time men

If they're hiring people who have no more than 2 years of experience they must understand that it will also take a senior like you to be an almost full time mentor to make them productive instead of you building stuff yourself. Are they expecting you to continue building stuff at the same rate you were without doing constant training? That would be a mistake. If not and you're just missing what you used to do, I think you'd have to move to a new team where you're not the one mentoring multiple juniors.