T-Mobile Sr. Software Engineer interview questions

Interview: The interview process was straightforward. A couple of round of interviews, first one with 2 of their senior engineers, and second one with a HM. Despite doing well (answered all the questions asked) and hearing some positive feedback during the interview, I did not get pass the first round. One of the interviewer seemed to like me, he agreed with a lot of answer I said and we had a very positive and collaborative interaction. However, the other one ... not so much. He asked vague questions with a fixed answer in his mind, and when I did not say what he was looking for a couple of times, I lost some points on his scoresheet. I did eventually say what he was looking to hear but that apparently did not save me. Also, the interview was very technical until the final question. The second interviewer, who was not pleased throughout the interview, did a total shift from deep technical questions to a behavioral question for which I did not have an exact match for an answer. I think that hit the nail on the coffin. Recruiter: The recruiter was truly incompetent. Their communication was poor throughout the process, especially after my first interview. Did not get even a generic response about the status of my application. Interviewers and Recruiters both could do a better job.