Markus has been working in responsible roles in online media business for more than 20 years.

He joint Ströer in 2014 to build the adTech-company Ströer SSP GmbH – Ströers inhouse adTech provider for online & DooH programmatic solutions.

Before Ströer, Letzner worked as COO on the publisher side for CHIP Online, responsible for the digital business of the brand CHIP, with many years of experience in digital sales & marketing and building digital products.

Markus Letzner has a master degree in Communications Studies and Ethnomusicology from Freie Universität Berlin.