I was interviewed for a software engineer position with a heavy focus on an analytical and measurement background.

All three interviewers focused on analytical and experimental design questions. No software engineering questions were asked.

Several days later, I was turned down with the reason, "You qualified in the analytical and data aspect, but we were looking for a product engineer."

One PM asked about designing A/B testing and brainstorming how to get users back.

One Data Scientist asked SQL query questions and probed some design considerations in creating A/B tests.

One engineer asked me to thoroughly design a staged launch plan, including pre-launch A/B testings. He mentioned it's an open question and let me design it freely.