Ms. Hiebeler-Hasner has started her career with Peat Marwick Mitchell & Co. now KPMG after having studied business administration at the Ludwig Maximilians University in Munich. As a tax consultant she founded her own tax consultancy firm in 1988. After various mergers with other consultancies the optegra consultancy group was established, with offices in Cologne and in Munich. Since October 2017, this company has been operating as Vistra Wirtschaftsprüfungsgesellschaft after the integration of the optegra Group into the globally active Vistra Group. Since October 2018, Ms. Hiebeler-Hasner has been Country Director for all Vistra companies in Germany. Furthermore, Ms. Hiebeler-Hasner and her brothers founded H3 Aerospace, which purchased Grob Aircraft in 2009. Grob Aircraft is a medium-sized company, with more than 250 employees, which develops and produces training aircrafts that are successfully sold world-wide. Apart from the professional abilities of Ms. Hiebeler-Hasner, which include proficiency with regard to financial statements, securing of accounting continuity and tax consultancy, Ms. Hiebeler-Hasner is also able to offer a huge entrepreneurial expertise due to her various business activities.
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