Yeah, we mostly look for D8 experience, but we'd also look at Symfony or other OO framework experience. I'm not the best interviewer, but I can usually spot when somebody's bullshitting his way through an interview. So if somebody knows the concepts that are important in D8 (Dependency injection anyone), they should be fine.
I hate when people don't know something and just start hacking instead of educating themselves. I work in an architect function now, so my development skills are waning, and I'm so happy I have a team of devs who have my back and are patient with my questions :)
It's a good thing you kept your cool and I'm glad you got that job. Keep on being patient and educating people, the programming world needs it :)
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