Earlier quoted context omitted.
is this specific to DB only? I feel like Germany needs a lot of workforce at German quality but no way they can fill that with any type of foreign immigration. They lowered a lot of immigration requirements to entry because of this. But still it will be not enough. It's a cultural thing and low wages in Germany can't fix it.
The language is a big problem. They can get quality immigrants, but convincing those quality immigrants to learn German is a big task. A lot of people would rather go to US with all it's uncertainty than stay in Germany due to these issues.
It's a white collar form of discrimination. Unless you come from a country as 'white' and wealthy as Germany, your degrees and experience is seen as much less valuable despite your language knowledge and your CV will be rejected even if it's technically a fit. Then comes the discrimination you'll face when looking for a place to rent but that's in other countries as well like the Netherlands.