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 online. The process took 2 months. I interviewed at Slack (San Francisco, CA) in Feb 2019
Interview
Starts off with a code review exercise. Followed up by a phone screen with hiring manager. Finally, they bring you for a half day onsite with some coding, background, and system design.
Interview questions [1]
Question 1
Given a database, write queries / code to answer various questions.
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 ?