The 30 second answer
The hiring manager wants to know how you approach new projects, collaborate across teams, and handle wins and setbacks, and How We Hire says they also review how you match Zalando's values. Those values are the Founding Mindset: customer focus, entrepreneurial mindset, speed and empowerment. Prepare one story for each, with a real decision and its outcome.
Reported. The 2023 post says the hiring-manager interview covers experience, career wins and challenges, how you approach new projects and collaborate with your team and others, and sometimes technical or business questions. How We Hire says the hiring manager also reviews "how aligned you already are with our values" and recommends reading the Founding Mindset.
The Founding Mindset (Reported, official wording). Zalando's culture page names four qualities: Customer Focus, Entrepreneurial Mindset, Speed and Empowerment. Sub-principles include "Score results", "Disagree and commit", "Act like an owner, play as a team" and "Fly high, dive deep".
Practice prompts (aggregator, not reported). Third-party prep sites build prompts from those principles, for example a time you disagreed with a technical decision and then committed to it, a project with measurable customer impact, or a time you shipped something imperfect quickly. They say they could not find exact Zalando values questions, so treat these as practice only.
Template per story. Context in one line, the decision you made and the alternative you rejected, the outcome with a number if there is one, and what you learned. Have one story for each quality, plus one for a conflict and one for a failure.