After applying for the job, I was contacted by a recruiter with a calendar link. I filled out my availability and didn't hear back. I pinged the recruiter a couple of times over two weeks and never got a response, so I finally contacted someone from Slack's website. They referred me straight back to the recruiter. Literally the exact same thing happened again--I gave my availability and the recruiter ghosted. It was incredibly frustrating to have my time and effort devalued like that.

1st phone screening call was very brief, only about 15 minutes: - Why are you interested in Slack? - Experience with conducting interviews and surveys? Provided opportunities to ask them questions. But the hiring manager didn't seem to know the details of the projects interns will work on.