Karsten Rehnisch was born in 1960 in Berlin.
He has a master’s degree of Business Administration obtained at Free University Berlin. He specialized in Auditing and Accounting.
Since 1984 Karsten Rehnisch has been working for the Siemens AG. He started at the Accounting Department at the Gas Turbine Plant Berlin and furthermore worked atvarious financial positions within Siemens Power Generation such as accountant and controller, process and IT consultant (SAP), financial Project Manager and internal auditor. Moreover he was the assignment financial integration manager service during merger Siemens/Westinghouse in 1999/2000. Karsten Rehnisch did various financial management positions in manufacturing, sales, marketing, order implementation and project management within the Siemens Power Generation Service organization.