On 28 July 2009, Napoli have signed the striker on a five-year deal, for €5 million. He scored his first goal with the partenopei on 16 August 2009 in the Coppa Italia match Napoli-Salernitana (3–0).
International career
During the U-20 World Cup in Canada, Hoffer shaved the name "Jimmy" into one side of his head after receiving that nickname from a coach. The nickname is a reference to Jimmy Hoffa.
He was part of the Austrian squad that played at Euro 2008, a competition which Austria co-hosted along with Switzerland. The only match that Hoffer started in was their last group match against Germany in Vienna.
On 1 April 2009, Hoffer scored two goals for Austria in a 2–1 win over Romania in a Qualification match for the 2010 FIFA World Cup.