Interview process began with two phone calls with the hiring manager, the first to discuss background and role, and the second a preliminary technical qualification. This was followed up by a take-home exercise that in my case was very open-ended and largely a thought experiment, on which I spent about 6 hours. I was invited on-site One really nice thing about the interview process at Slack is that the on-site begins with a presentation to the hiring committee of your take-home exercise. That's a nice way to set the tone for the day. The remainder of the on-site experience however was very poor. It lasted close to six hours, with not even a literal minute between interviews to take a break or prepare for the next conversation. The only actual break I got was when the hiring manager was 15 minutes late to our meeting, which resulted in my only having 15 minutes for lunch which was also an interview so I couldn't even really eat the food I was provided. Obviously the quality of conversations in the afternoon suffered greatly as a result of this. Interviewers below the leadership tier did not seem focused on evaluating for the role in question but rather stuck with topics very specific to their own work.

Applied on a Saturday, heard back from someone in talent the following Monday. Scheduled the HR screen for later that week and was given a week to complete the homework. It was an easy three questions on CoderPad.io, but I forgot to add something until afterwards, no offer.