[enriquto]

> and even though EU has free movement of labour, the language and culture barrier is strong, and internationals have a harder time to get hired, unless they speak the local language.

Certainly not in all fields. In all the math labs that I know (from France, UK, Italy) more than half of the researchers are from other countries.

Of course, if you want to teach, it is much easier to get hired if you already speak the language.

(edit: format of the quote)