Well for its worth my experience interviewing for the data team there was terrible. A long coding exercise that when submitted resulted in a 7 day wait and a 2 liner email. Wouldn't recommend.
An excerpt...
Which raises the question: With such a good tool for team communication, why does Slack need an office? Why not do all your work virtually?
Slack CEO Stewart Butterfield gives product manager Mat Mullen advice, and a ukulele serenade. “There are some conversations that are much easier in person,” says Brady Archambo, Slack’s head of iOS engineering.