Ask during the interview what is the worst bits of their code base, and if they'll show you. Having a discussion about what to change and how it might get chang

Ask during the interview what is the worst bits of their code base, and if they'll show you. Having a discussion about what to change and how it might get changed is a great way to assess a candidate and for a candidate to assess an employer. For hiring managers out there, it could even be something you've already refactored and you can pull up the older version of it.