The whole recruitment process at Slack was wonderful. The recruiter I worked with was communicative and always kept me in the loop of next steps, even if there were delays due to people being away, etc. I first had an initial screening call with the recruiter, which was quickly followed by a 1:1 phone interview with the hiring manager. There was a bit of a wait until I heard I was moving forward to the next and final round, which was the presentation to the panel and 4x 1:1 interviews in succession. The presentation was honestly a lot of work to get it ready and you really had to know what you were presenting inside and out, but definitely see the value in having candidates go through it. Everyone I spoke to during the interview process was very friendly and it's clear that Slack values the corporate culture and its employees a lot. Overall, I'd say it was an intense interview process but everyone was so nice and passionate about the company that it made it enjoyable.