His clients include renown US technology companies and providers of internet platforms as well as European technology companies.

Andreas regularly publishes in magazines, holds lectures and hosts discussions, especially on current technology topics. Furthermore, he is one of the pioneers in social media law in Germany and published a Practical Handbook on Social Media Law in 2014 (De Gruyter Verlag).

Andreas publishes on IT and data protection related topics on LinkedIn and tweets as @munmax.

Andreas is CIPP/E certified under the IAPP certification scheme for privacy professionals.

Andreas is also recommended in Juve Data Protection and Information Technology 2020, who state that Andreas "can explain difficult facts simply, pragmatically, highly specialized, nevertheless grounded", is "very good in legal evaluation of new technologies", and is "very profound knowledge in IT law".