Just left easyJet, and there is NO requirement to speak any other language apart from English, regardless of base.
So if you'd like to base yourself in Europe, why not give it a go? You'd be on a UK contract, working on brand-new Airbus 319s with some of the friendliest crew around.
It's a good company to work for; work hard, get paid well (£1300-1400 for a junior).