>You want someone that can easily talk about the pros & cons of using different data structures or algorithms to solve problems.

uh, not really.

In my world majority of performance issues comes from N+1 queries, I don't need people who can do crazy things with trees. I need people who write testable code, actually write tests, care about security and take responsibility for their code/refactor.

Of course you can argue that N+1 query fits algorithms part, but very often algos mean leetcode

But, since "you guys" always talk about data structures then I'd want to ask - how often do you use something fancier than literal basics?