A degreed economist, Mayer began his career as an editor, and in the 1980s worked at the Fraunhofer Institute ISI as head of the Technology Transfer Working Group. From it, in 1990 he founded the management compan TechnoStart Venture Capital Group in Ludwigsburg, whose CEO and Managing Partner he remains “on the side”. Mayer has worked with eCAPITAL since 2005, starting in the joint portfolio company Novaled in Dresden.
Since January 2014 he has been a venture partner at eCAPITAL AG in Münster, and since November 2015 has been on its Executive Board.
He has been a member of the THEVA advisory board since 2016.