From my experience, people get along pretty well in Germany even if they know only English. Especially in large cities like Berlin, where they are likely to get such a job. So many people speak good English here, that it is actually hard to learn German, because the natives don't want to speak German with you :-). I'm in research, and half of my institute here in Berlin are foreigners.

Of course, it still helps a lot to learn German - and I think you miss out on a lot if you don't learn the language of a country. Also, you'll need a friend or colleague to help you with administrative stuff in the beginning (which may be in German only).

Going through the whoishiring.io job offers, Germany has a comparatively high number of job ads written in German (even for remote positions).

This is very interesting, as it may point to a less international work culture (although this is in the process of changing), which this translates to a "possibly yes" answer to your question. Of course, whoishiring.io may not reflect accurately real world, still, I don't think it's random.

Answer of the type "N people work here in Germany without speaking german" are not correct answers, since they don't imply a comparison (the question is comparative).

I know about 6 American software engineers who don't speak a lick of German working in Berlin.