Terrible interview process. The interviews are done by a contracted company out of Brazil. The interviewer started the interview while in-transit to a workspace. Camera off, audio off, and completely unhelpful. Despite this I passed.
Next interview was done with a high level technical director. It was done in Chrome dev tools and Notepad. Good luck passing this. Despite solving the problem, the result was a 'No' and to be honest, anyone that can solve a complex coding challenge in Notepad is a top tier candidate.
Overall, this company doesn't know what it wants or needs from an engineer. I'd recommend not wasting your time.