Yonca Kumsar is the Chief Transformation Officer at group.one, a leading European provider of online presence solutions, where they oversee business transformation and growth. Previously, Yonca served as a Senior Engagement Manager at McKinsey & Company from 2012 to 2020 and held various leadership roles at Trendyol Group, including Head of Marketplace Category and Chief of Staff to the CEO, from 2022 to 2024. Yonca earned an MBA from Harvard Business School and holds a Bachelor's degree from Boğaziçi University, along with completing an exchange program in Industrial Engineering at Technische Universität Berlin.
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