I applied through an employee referral. The process took 2 weeks. I interviewed at Slack (San Francisco, CA) in Jun 2016
Interview
Don't bother wasting your valuable time interviewing with this company.
Slack's interview process consists of a short (very uninformative) phone call and a coding challenge. Despite what the recruiter promises, they provide absolutely no feedback/guidance and do not respond to emails in a timely manner throughout the process. Slack uses the coding challenge as a time buffer for themselves, but it's really a waste of time. The manager and infra engineer I spoke with over the phone seemed more interested in fixing bugs and "multi-tasking" during the call than taking the time to get to know the candidate. I was really turned off by their unprofessionalism and rude attitude. After they finally replied to my email, I promptly replied and told them I was not interested in discussing the offer.
Interview questions [1]
Question 1
Phone call, followed by a take-home coding assignment.
Asked general questions about your career so far on a casual phone call before, the main interview was a series of questions and 2 test questions which weren't too difficult.
I applied through an employee referral. I interviewed at Slack (London, England)
Interview
First I took a Technical Assessment, they call you according to this test
Secondly, there is a Behavioural interview, they call you whether you passed or not
Lastly, there is being Technical interview
Code review exercise , manager meeting, software design and coding exercise . Code review exercise will test your ability to review a PR regarding how you detect code smells, bad practice, but it’s also behavioral since you need to know how to communicate suggestions and changes . Design and coding process will gauge your problem solving approach but not needed to completely solve
Interview questions [1]
Question 1
How would you design a new api endpoint in slack ?
