I am an open-source software developer based in Hamburg, Germany.
You may know me as the author and maintainer of StreetComplete, osmapi (Java library) and some others.
Before OpenStreetMap, I was involved in the development of the Indie game "Clonk" and later "OpenClonk". Both are still around, and free now, check those out!
A deep dive into how StreetComplete stores edits and syncs them with OpenStreetMap, including persistence, solving conflicts and allowing users to revert their edits.