€60k/year is generally speaking a significantly above average salary for Berlin.

Very far above average.

Do we have an income distribution of salaries in Berlin (or Germany)?

That used to be true. But lately, the demand has grown bigger and bigger and if you look over some job boards you'll see salary ranges that raise the average handsomely. On the other hand, 60k still is almost 3 time the average salary in Berlin so it can take you quite far.

Top end of the market here for skilled C++ developers is more like €100-120k. So it's possible to earn a lot more 60k than but you won't do it building CRUD apps for a poorly funded copycat startup.

SoundCloud had plenty of engineers on €90k+. HERE Maps also pays very well. Even a lot of the startups are openly offering ~€80k on StackOverflow and AngelList for genuinely skilled Ruby/JS developers and you can always negotiate a little higher.

AFAIK only one company pays 100K-120K in Berlin, doing some Excel plugins in C++, but they have very alarming reviews on Glassdoor.

CoreOS pay in a similar range for systems development in Go. Still cheaper than paying their SF based employees!

If you are a highly skilled engineer working for a big company maybe. Software engineers get like 40k. Normal people a lot less.

Good developers can make significantly more than that because of foreign entrants and competition, see for example: https://stackoverflow.com/jobs/developer-jobs-in-berlin?sort...

For experienced engineers at a funded startup you can be way above €60-70k.