[kleiba]

I also work in Germany and the code-switching has nothing to do with the question of precision, but simply because English is the technical language for CS. Also, Germans apparently like everything American, so some of their own words which originally existed in German (and have exactly the same meaning as their English counterpart) have pretty much fallen out of use, cf. computer / Rechner.

It's not that German lacks precision per se but most of the jargon originated in the US or even England, and rather than coming up with German translations, it has become custom to use the original English. Which, frankly, makes everyday tasks like looking up documentation or debugging a lot easier.

Compare this to French where the Académie Française makes sure that you don't have to use these nasty English words! Yikes. And if there isn't a good French translation, they just make one up - my favorite example: the word "bug" (as in programming) has a made-up "French" alternative: "bogue". As far as I understand, no-one uses it, but it exists.