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Frank Keller has a strong background in internal audit and financial services. Frank started their career at KPMG AG, where they worked as a Swiss certified accountant and Diplomierter Wirtschaftsprüfer Financial Services from January 2007 to November 2011. Following this, they joined Die Schweizerische Post/PostFinance AG as an Internal Auditor from December 2011 to June 2013. Frank then moved to Hoist Finance, where they currently hold the position of Internal auditor/Deputy Head Internal audit since July 2013.

Frank Keller's education history is as follows:

From 2000 to 2006, Frank Keller attended Ruhr University Bochum and earned a MSc in economics and business administration, with a specialization in economics.

In 2004, they were awarded a scholarship at the University of Bern, where they studied economics.

In 2009, Frank Keller attended Folkuniversitetet Göteborg to study Swedish.

In 2010, they completed a program at Expert Suisse/ Akademie der Treuhand-Kammer and became a Swiss certified accountant and Diplomierter Wirtschaftsprüfer.

In 2012, they studied Business Swedish at Folkuniversitetet Göteborg.

Frank Keller also attended the University of Gothenburg for a course in Swedish in 2014.

From 2015 to 2017, they pursued studies at the Institute of Internal Auditors, earning certification as a Certified Internal Auditor.

In terms of additional certifications, in 2006, Frank Keller obtained an MSc in Economics and Business administration and Diplom Ökonom from Ruhr-Universität Bochum.

In 2010, they obtained CPA Swiss certified accountant/Diplomierter Wirtschaftsprüfer from Treuhand-Kammer Schweiz.

In 2022, Frank Keller received the CISA certification from ISACA.

There is an entry for "Witten" in the education history, but no details or dates are provided.