
In Good Company with Nicolai Tangen HIGHLIGHTS: Robert Gentz - Co-CEO of Zalando
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Mar 6, 2026 Robert Gentz, co-founder and co-CEO of Zalando, the European online fashion pioneer. He recounts starting from selling flip-flops to building a massive pan‑European platform. Talks cover rapid scaling via a selection-conversion flywheel, AI-driven discovery and personalization, a natural-language shopping assistant, photo-based sizing, leadership evolution, and a vision for European entrepreneurship.
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FlipFlops Launched The Whole Company
- Robert Gentz started by selling flip-flops on FlipTops.de in June 2008 and the idea quickly validated with 20 sales per day.
- That early traction secured investment to expand from a single SKU to a full online shoe business and then broader fashion.
Selection Drives A Fast E commerce Flywheel
- Zalando's growth relied on a selection-conversion flywheel: more selection increased conversion which funded further expansion.
- They scaled from ~5 million revenue to >1.2 billion within four years and grew headcount from ~50 to ~2,500 by 2011 by expanding categories and countries.
Discovery Feed Turns Shopping Into Entertainment
- AI is reshaping customer interaction through discovery feeds that surface tailored content for inspiration and entertainment.
- Zalando uses large pools of content and models to surface items customers are most likely to engage with, creating a discovery gateway beyond pure buying.

