In 1993, during his student days he and Thomas Zabel founded MainConcept company to become a dominant provider of video/audio codecs.

[2] At the same time Markus joined DivX and soon after became Senior Vice President and CTO in February 2008.

[5][6] During his term, his focus was to integrate H.264 digital video technology into the DivX product line.

[7] Markus resigned from DivX shortly after in December 2008 in order to find entrepreneurial opportunities in his own country.

[9] He is now retired, living in Thailand and creates open source graphic applications.