E-commerce & retail Interview Loops
At Walmart, Shopify and eBay, data interviews are mostly about SQL and judging machine-learning models. That's because forecasting, search, recommendations, pricing and fraud lean on ML more here than in most industries. Around that, you'll get a product or business case and behavioral questions. The big difference is the first step. Walmart starts with a timed online test that stops you if one test case fails. Shopify's first real interview is the "Life Story," an hour-long talk about you that matters more than people expect. eBay adds interviews on search, ranking and recommendations. Prepare the shared part first, then read about the first step at your company. The data is also its own challenge. Stock levels change all the time, one order can have many items, and sellers matter as much as buyers.