I applied online. The process took 5 days. I interviewed at Slack (San Francisco, CA) in Aug 2018
Interview
Applied online, quickly got contacted by a recruiter to schedule a phone screen; answered a few "technical" questions and passed on to a phone interview with the team lead and manager. Spoke to them on the phone.
Interview questions [1]
Question 1
Some specific questions only tangentially related to what was in the job description (i.e. what does the ISO 27002 standard say about encryption at rest); some more big picture conceptual questions about different standards and frameworks