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Working for a US company: remote from Brazil or in the US?
Working remotely for a US company and working in the US are different things. See what changes in visa, taxes, income and risk, and when a work visa is worth it.

Working for a US company while living in Brazil and working in the United States are different things. In the first case you provide services from abroad, usually as a legal entity or contractor, and you do not need a US work visa. In the second, you need authorization to work in the country, and that depends on a visa.
Quick answer: remote work is the simplest way to earn dollars, but it requires a profession you can do from a distance and does not give you the right to live in the US. To work inside the country, you need a work visa, such as the H-1B (specialty occupations) or the H-2A (temporary agricultural).
Remote work for a US company
How it works. The company hires you as a service provider, generally under a contract paid in dollars. You work from Brazil, and the relationship is governed by the contract and the applicable laws.
Advantages. Earning dollars without changing countries, experience at a US company and contacts for the future.
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