Kaufmann moved to Germany in 2008 and received German citizenship in order to play for the national team, DEG Metro Stars of Deutsche Eishockey Liga. He is among the top scorers in the league. Kaufmann admits that his teammates are very curious about him being Jewish and often ask him questions. Kaufmann told the UK's Daily Mail: "I didn't have to think hard about it. It is a great honour but it will also be a very emotional moment for me when I hear the national anthem played."