We tackled the multilingual challenge at every layer of the platform. User language preferences are captured at sign-up and applied across the entire experience. Static platform content was translated and managed per language. For dynamic data — listings, categories, and fields — we integrated OpenAI to automatically generate multilingual versions of user-submitted content, removing the burden from sellers while ensuring quality across all five languages.

Payment localization was handled by integrating iDeal (now Wero) and Klarna alongside the existing Stripe credit card flow, giving Dutch and European users their preferred checkout methods. Listing types were configured to control which categories appear based on the type of listing being created, keeping the browsing and posting experience clean and relevant for every user.

We also built a wishlist feature allowing users to save and revisit listings — adding a layer of engagement and return visits to the platform.