A map enthusiast, interested in open data, open source, open knowledge. Works on making them more powerful and accessible to as many as possible. An OpenStreetMap mapper since 2013. Active in various OSM discussions and in improving the OpenStreetMap ecosystem. Programmer, worked on improving StreetComplete – an OpenStreetMap editor for Android. Contributed also to other software, for example improving OSM Carto, one of the primary map styles for OpenStreetMap. Author of maps, data analysis and more. Interested in OpenStreetMap being an active, community-controlled source of great open data, useful for many projects big and small. Elected to the OSMF Board in 2022.