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Frank Lehnen has extensive experience in human resources and marketing, currently serving as the Leiter HR und Marketing at Sit SteuerungsTechnik GmbH since September 2011. Previously, Frank held various HR roles at T-Systems International GmbH from February 2000 to December 2010, including HR Business Partner and Personalreferent. Frank holds a Diplom in Betriebswirtschaft from FH Aachen University of Applied Sciences, earned between 1987 and 1992.