Someday soon, there will be an AI that makes it possible to collaborate effectively without a common language. Until then, all Crossover clients and partners use English as a common language to ensure everyone can understand each other.
The amount of English you need depends on the role, and is often lower than people expect (e.g. customer support roles typically require more than engineering).
Watch this video to hear some of Crossover's Brazilian contractors explain how much English they use at work (and how much they had when they started).
Hear from successful candidates
Watch Video 
