[Aachen]

> challenging for anyone who didn’t know the language.

Interviewees don't get to pick the language?

If you're hiring based on proficiency in a particular tech stack, I'm curious why. Are there that many candidates that you can be this selective? Is the language so dissimilar that the uninitiated would need a long time to get up to speed? Does the job involve working on the language itself and so a specifically deep understanding is required?

[tuetuopay]

> Interviewees don't get to pick the language?

For leetcode interviews, sure. Other than that, at least familiarity with the language is paramount, or with the same class of language.

[limflick]

Aren't most interviews like this? Most dev openings I see posted mention the specific language who's expertise they're looking for and the number of years of experience needed working with said language as well.

It can be annoying, but manageable. I've never coded in Java for example, but knowing C#, C++ and Python I imagine it wouldn't be too hard to pick up.

[Aachen]

Huh, okay. That's not how we run interviews but I guess it's at least a thing, even if not common around here that I've seen yet (I'm not super current on interview practices though)

Regarding the job ads, yes they'd describe the ideal candidate but I haven't the experience that the perfect candidate ever actually shows up. Like you say, knowing J, T and Z, the company is confident enough that you'll be able to quickly pick up dotting the Is and crossing the 7s

[ponector]

That is the market nowadays. Employers seek not only deep knowledge in particular language, but also particular libraries. If you cannot answer interview questions about implementation of some features - you are out.