> Specific language expertise rarely matters. +1 to this. Especially at the 16-years-experience level. Maybe earlier in someone's career where their primary fo

> Specific language expertise rarely matters. +1 to this. Especially at the 16-years-experience level. Maybe earlier in someone's career where their primary focus is how to fit in and ship stuff without getting stuck all the time. But at ~staff level, your thinking and your contributions become a lot more language-agnostic (not entirely, but mostly)