Stefan Ratke is 25 years old. He successfully completed his apprenticeship in precision toolmaking at the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) in the summer of 2009. Today, he works as a mechanical technician at DLR's Engineering Systems House, a facility for engineering and integrated manufacturing of scientific equipment at DLR Cologne. This is part seven of the DLR Web Portal portrait series.
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