I applied online. The process took 1 day. I interviewed at Braintrust (Belo Horizonte, Minas Gerais) in Oct 2021
Interview
Braintrust is a decentralized network of freelancers, and brainstrust's own talents conduct the interviews. So far the process has been nice and simple, but I haven't reached the end of the process yet.
It could definitely be a scam, It looked like they were just collecting data from people to advertise their courses. I'm not sure about their genuinity , they are taking advantage of young and desperate applicants to spend money on their courses!