I was initially contacted by a recruiter over LinkedIn with a generic message on November 21st. I replied on the 22nd and sent him my resume. The recruiter disappeared. When I pinged him again on December 6th, he replied and we had a phone conversation. He told me that he would forward my resume to hiring managers in Azure. He then disappeared again for two weeks. When I pinged him again just after Christmas, he said he would get back to me again. He again disappeared and finally replied on January 10th that a couple of teams in Azure were interested. He asked me to send him over time slots for a phone screening. I did, and then it was radio silence again. In the first week of February, the recruiter told me to send my new availabilities for phone screening. I did again. Finally, my phone screen was set.

The phone screen was held using Skype for Business, which does not have a client for Ubuntu. So, I managed to get hold of a Mac for the interview. The interviewer also did not know how to use Skype for Business. He asked me some design questions. At the end, when I asked the interviewer about when I should expect to hear from the recruiter, he said, "Your guess is as good as mine." When I told him about the long process I had been part of, he promised to expedite the process. And sure enough, after three days, I learned that I had cleared the phone screening.

But the recruiter called me and told me that I should not have complained about the long time for me to get a phone screening and that it looked bad for me and that I should refrain from mentioning this again in the on-site interview. It has been a week, but my on-site has not been scheduled, despite me telling the recruiter that I have other interviews lined up. It doesn't matter, as I am not going on an on-site interview anyway.

Explain Lambda and Kappa patterns for big data pipelines.