LinkedIn Senior Software Developer interview questions

After phone conversation with recruiter, I had phone interview in following week. Interviewer called me on time. But I was given the wrong interviewer. First he went through my experience. and then gave two coding problems. I felt he did not prepare for his interview problems well. We spent lots of time on the time complexity. Also it seems that he wanted the answer he wanted, and not realized there are several solutions.

Recruiter's responsive, the process was explained very well. Interviewer were very friendly. All related expenses paid. The follow up after the interview was timely. Please write at least 30 words on Hiring and Interview process.