Had a phone call with the VP and then called for an onsite day. They were generally friendly and I had lunch with their group. I answered all of their questions (leetcode, statistics, no brainteasers) and then was told a few weeks later that I didn't have the skills they wanted, even though I had industry experience at similar firms. The people were qualified but not really extraordinary, and had all been there a long time. They appear to post jobs for years and just interview lots of people without hiring anyone.

About an hour of Skype call with a VP. 15~20 minutes of presentation highlighting scientific research, then follow-up questions / conversations. I managed to make the VP understand the main points of the research. The presentation went not bad. The problem is, I haven't heard back from anyone after the Skype call. I waited for over half a month, and then explicitly asked the person I Skype'd for an update / news. NOTHING. Probably they send out a lot of ads, leading to hundreds of Skype interviews each month? Fine. I may not have been the person they wanted. But responding to each applicant with email message should take under a minute. Very disappointing.