wunderkind

ihmelapsi A child prodigy; a phenom.
A highly talented or gifted individual; one who is successful at a young age.
{{quote-journal|date=January 28, 2009|author=Ravi Somaiya|title=It’s the Economy, Girlfriend|work=New York Times|url=http://www.nytimes.com/2009/01/28/nyregion/28daba.html