- 1974-1979 Studied law at the Freie Universität Berlin
- 1983-2005 Lawyer in own practice
- 2005/2006 Partnership Wanderer und Kümmel
- Since 2006 Eponymous partner at Wanderer und Partner
- Lectures and seminars on apartment ownership law for Kurs und Gut Berliner Fachseminare GmbH (a professional training institute), Juristische Fachseminare (a provider of professional training for specialist lawyers), BBA Berlin Brandenburgische Akademie der Wohnungswirtschaft e.V. (a training academy for the property industry)
- Adviser regarding courses for specialist lawyers on landlord and tenant law and apartment ownership law at Juristische Fachseminare.