I applied through an employee referral. The process took 4 weeks. I interviewed at Slack (Dublin, Dublin) in Jan 2020
Interview
You have 5 stages with a task and two different manager levels. Assessed on ability to cold call and handle objections. Pretty quick turn around and responsive recruiters in particular.
I applied through an employee referral. The process took 3 months. I interviewed at Slack (San Francisco, CA) in Aug 2016
Interview
Very disorganized and unprofessional company. Seems to be run by young tech bros who simply do not care to learn how to interview properly. After HR contacted me about the role, the interviewing manager forgot to call for the interview TWICE. When he finally did set up the call, he seemed like he was working on something on his computer and was not paying attention to the interview. Very odd.