In defense of Leetcode Interviews

I’ve never been good at playing football 1. I started playing again last year and I have scored more own goals than goals for my team. Also, I support the RCD Espanyol 2, which has spent last season in the second division and has miraculously ascended to the first division last week. And to be honest, I only watch games to spend time with my...

The other day I was interviewing a developer for a position at Wallapop. The candidate was a little bit junior, but I enjoyed their technical assignment and the conversation was going great. One of the questions I had to ask was

Explore the critical considerations and potential pitfalls of relying solely on A/B testing in making business decisions. While A/B testing is a valuable tool, this post challenges the assumption of exchangeability between past and future data, emphasizing the dynamic nature of the business environment. I propose two solutions (1) validating the...

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