Co-Founder and CEO of Vereign AG, Open Source specialist for Self Sovereign Identity and Sovereign Use Cases, previously involved with Open Source Collaboration, founding president of the Free Software Foundation Europe (FSFE), author of the Brave GNU World, Physicist, self-taught software developer.
Worked with policy organizations at many levels, including United Nations WIPO, WSIS, IGF, World Bank, European Commission, national governments. Worked with large number of Open Source organizations, companies such as Red Hat, and large corporations like Google and IBM.