Hanno Schlichting is one of the core developers of Plone. Formal roles include being the head of the internationalization team, helping out as the assistant release manager, having served on the framework team and coordinating and organizing the bug trackers. More informally he is known as the 'Plone janitor' - keeping the code and tests clean and has served for a long time as Plone's 'Merge monkey' - integrating all new changes from development branches and merging bug fixes to all relevant release branches.