English proficiency among Brazilian software developers can be very high. Companies hiring in São Paulo and across Brazil routinely find engineers with fluent or near-bilingual English—many roles explicitly require this level, and developers without strong spoken English generally aren't hired.

Firms that rigorously vet for language skills (by interviewing and assessing candidates in English) are able to staff teams in Brazil with fluent English speakers who can comfortably join U.S.-based, client-facing projects.