> low salaries for software engineers. The most of senior software developers will earn 50.000 - 60.000 EURO anually and after paying taxes it's only ~2.600 EURO per month (3.000 USD)

Nonsense. Here in Berlin, €60k would only be competitive for an engineer with maybe 2-3 years experience.

Good senior people can (and should) get €85k - €90k. If you're in Berlin, and want to be pointed in the direction of companies who pay that, hit me up.

VPEng / CTO / Director-level roles are now €100K minimum in Berlin, and often significantly above.