I applied online. I interviewed at Slack (Vancouver, BC) in May 2017
Interview
Three-step interview process over the process of about three weeks. Essentially a get-to-know phone screen with the recruiter, a phone call with your prospective manager and then meeting the future prospective members of your team/people who you'd be working with.
Interview questions [1]
Question 1
Who would you have dinner with dead or alive?
Why do you want to work for Slack?
What type of leadership style do you work best under?
Why do you want this position?
Extremely disorganized, poor choice of technical questions and a silly coding homework exercise they have you do that they barely look at and take interest in. Interviews ran into way more hiccups at all stages than excusable for a company of this size. As others have noted, DO NOT waste your time with the silly homework assignment and a company that doesnt respect candidates' time
Interview questions [1]
Question 1
take home project and very little relevant questions
I applied online. I interviewed at Slack (San Francisco, CA)
Interview
Extremely slow and terrible process. Applied online, and was reached out to by possibly the most non-enthusiastic recruiter I have ever encountered. During our first brief chat, she failed to convey her passion for the product and depressed my morale for the role as well.
After the phone screen, I received a "coding challenge" which involved building a lightbox using JavaScript. Not only were the specs for this project lacking, there was a significant lack of feedback given from the recruiter based on early questions.
Slack needs to improve its recruiting pipeline and process, or it will recede into the shadows much like Yammer did, not matter what Mr Butterfield might say.