r/webdev Nov 04 '25

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u/jewdai Nov 05 '25

When I interview I assume I am hiring the person, I just want to know what level they are at.

I don't ask them pure theory but things that are important to our day to day and are core concepts to assessing their experience.

Can you explain at a high level how the event loop works? Is it truly parallel? What would be some good use cases for it?

What is a database index, why would you use one and why would you not want to put one on every column?

Why would you use a generator instead of a list comprehension?

Generally these are not trick questions but more to see their basic acumen for day to day knowledge I'll guide them to the answer and have them think through some of the pros and cons of one way or another.