collana IT GmbH
Dirk Wieland is currently working as the Geschäftsführer at collana IT GmbH, starting in November 2020. Prior to this position, Dirk held the same title at MAC IT-Solutions GmbH from February 2002 to April 2023. Dirk obtained a Diplom in Wirtschaftsinformatik from Fachhochschule Wedel.
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