Orhan Karaca has extensive experience in customer service management within the Viessmann organization, serving in various roles since October 2005. These include positions as Müşteri Hizmetleri Sorumlusu at Viessmann Türkiye and Müşteri Hizmetleri Müdürü at Viessmann Isı Teknikleri Tic. A.Ş. and Viessmann Climate Solutions TR. Orhan has been instrumental in overseeing customer service operations and has contributed to the growth of the company over nearly two decades. Orhan holds a Bachelor's Degree in German Language and Literature from İstanbul Üniversitesi, obtained from 1995 to 1999.
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