$60k is even above median in Western Europe, although that's mostly due to the anomalous high value of the USD at the moment (it converts to about 4.4k euro/month, which in Berlin would be a decent salary even for a senior dev).
Also to pay 60k euro it will cost 21% more. So the fully loaded cost: 72.6k euro.
http://www.uhy.com/employers-now-pay-average-employment-cost...
The actual figure may vary, but as a rule of thumb $60k / year is 53k euro / year for fully loaded, 43.8k euro gross, 23k euro take home / year. Doesn't seems anywhere close to Berlin senior engineer salary :-).
Which for some places in Europe it might be a good comparison, but for others making €40K a year might get you a far quality of life than what you get in the Bay area or the US in general for $100K (e.g. larger house, better savings, insurance, 4 weeks paid vacation, decent working hours, etc).
I ask because this practice seems to vary by country / continent quite a bit, and makes a rather large difference. So, e.g. if someone in Berlin quoted a 4.4k euro figure, would they likely mean after tax?
Married with stay-at-home spouse and 2 kids might pay half as much in taxes as a single person earning the same gross salary.