After training as a banker and studying law, Neumayer worked as a judge at the District Court of Munich. In 1994 he was press secretary to then Bavarian Prime Minister Edmund Stoiber, in 2004 he also assumed the position of speaker of the Bavarian government. From 2006 to 2010 he held the position of department head for Federal and European Affairs. After that, he was head of department in the Ministry of Agriculture.