[4ndrewl]

EU or Europe - two different things. But yeah, you can't just turn up and take a job - unless you've got the right to live in the country you're interested in you'll need residency and work permits. What languages do you speak fluently enough to work and socialise?

[youreth4tguy]

Actually it's super easy for any EU company to sponsor a so called blue card, the salary requirements are laughably low. I think the reason why so few companies do it is because they're simply not aware of its existence

[4ndrewl]

Indeed, if OP equates EU to Europe, but doesn't answer the language question. IME so few companies do it because there's little demand. The east of Europe is relatively poorer (in pure financial terms) than than west, and it's far easier to hire people from those countries who are already in the EU/Shengen than outside.

[tech_lizzard]

English primarily. I have high school Spanish - I can converse and get along okay, but I'm rusty and depend on translators heavily.

[4ndrewl]

Well the UK is the obvious one, but that's not in the EU. I believe the Netherlands sometimes also uses English as it's language of business (apologies if incorrect), but I'm not sure where else.