Well in Germany there’s a greater percentage of English speakers than in other European countries, I don’t think there are many teams in Spain, Italy or France speaking in English.
I’m not in IT so my knowledge is not first hand but I do know that while there are jobs the competition is crazy, job offers for a single position or two get thousands of applications. For a company to hire someone on the other side of the pond op would have to really stand out from the other thousand applicants.
More than the south sure. As a tourist you wouldn’t have any difficulty getting directions or ordering at restaurants or things like that. Places where you can work effectively without any knowledge of the local language are more difficult to find. And those are the hardest countries to get in as a migrant.