I'm the original poster of this comment: @3mje+17FXjCTN.
This is exactly what happened to me. I replaced an outgoing lead engineer (he found a job elsewhere) and within 3 weeks, several people from India joined the team without a single word from management at all. My first-line mgr, a director, based in the western US, had no idea what was going on. Several other first line managers were equally confused. I spoke with the engineers from India myself. Apparently, they said they had been shuffled around to different teams 3 times in less than a year and it was impossible to keep up with all the change.
Several of us in the US, including my first-line mgr, tried to contact the new Sr. Director, who was based in India, what was going on. Nothing. Not a word from this man in 3 weeks. Contacting other Sr. Directors was met with silence as well. Finally, our scrum master told the Sr. Director in India that this was very unprofessional to behave this way, so we finally had a call with him were he said these people were here to "grow the product" as "more was going to be demanded over the next fiscal year". Not once did he explain why nothing was said as offshore resources were added.
As I said in my last post, their 'lead' had similar background and experience as I did; I didn't wait to be cut, I put two and two together and within 3 weeks I was out of Optum. I strongly advise you to do the same.