Astghik Der Sakarian
Beluga & Töchter und DerSakarian
Petra Wolkenstein shares our enthusiasm for our work, thinks strategically and implements with us.
Astghik Der Sakarian
Beluga & Töchter und DerSakarian
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Flora Miranda
IT pieces
Petra showed me different perspectives on my financial planning, including how to calculate market size, prioritise certain client groups, and optimise professional…
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DI DI Dr. Andreas S. Rath
ONDEWO GmbH
Petra Wolkenstein is THE expert when it comes to growth hacking strategies.
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Aleksandr Bogachev
CEO, DataStoryTellers
Petra is the best business coach I've ever met. She always tries to dig into your situation, not just giving common advice.…
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