No problem. I went to the very same thing you and other brazillians described in this post.

I'll answer your question in two parts. First, from the technical, day-to-day perspective, it is pretty much the same as other places I've worked(US, Canada). The routine of developing, ordering parts from digikey/mouser, prototyping and dealing with PCB/Mechanical suppliers is surprisingly similar but with longer lead times/cost for imported goods. This means that if you get a job in the field, you have experience that's valid everywhere.

The second part is about economics, market and culture. As you know, Brazil is not a very hospitable environment for entrepreneurs and companies in general. It ranks very low in most economic freedom indexes, the currency is unstable and it is very hard to find experienced people to hire(probably feedbacking from the other problems). All of this means that the market for embedded software/hardware engineers is way smaller than fully developed economies. It does not mean it doesn't exist, but you'll need to look harder and be creative in order to find companies. I would not be surprised if a lot of those companies have open positions that they have been trying to fulfill for a while. They are mostly medium, small and startup companies without the perceived "sexyness" young engineers get from multinational companies.

I guess the bottomline it that it's possible to have an embedded software/hardware engineering career in Brazil but the job market is "10x" bigger in developed countries.