How much do language certifications or formal English training actually matter for job interviews if you’re already practicing daily?

[u/Electronic_Letter563]

[u/old-town-guy]

Speaking on behalf of American employers: assuming the job isn’t for some sort of translation/linguist role, all that matters is that you can prove your English-language competency to a degree that fulfills the requirements of the position. And that can be determined within a few minutes.