Mario Wiestner

Mario Wiestner is an experienced Network Engineer currently working at Wien Energie GmbH since April 2021. Prior to this role, Mario held the position of Anwendungsbetreuer at cardseven Handelsunternehmen OG for a brief period from November 2020 to January 2021. Mario also worked as a Service-Elektriker at Jergitsch Gitter between January 2020 and November 2020. From June 2008 to January 2020, Mario served as a Systemspezialist at ÖBB Infra AG, showcasing a strong background in technical and systems support throughout a diverse career.