I'm happy to say that the candidate process at Slack was, overall, a very pleasant experience. I felt very well taken care of by the recruiter and everyone I met during the process was friendly and welcoming. The information given (written and verbal) was generous and detailed, and the recruiter made an effort to check in with me throughout. I rarely had to wait more than a few days between each step before receiving a call-back, and I never felt uncertain about what was going on or what the next step was. This was easily the most professional and pleasurable recruitment experience I've had. The process itself is split into 4 steps: a 30 minute phone screening interview by the recruiter, a 60 minute interview with the hiring manager, a 60 - 90 minute detailed walkthrough of your entire CV from studies to current employment (Slack calls this a "chrono"), and lastly a 60 minute presentation. The screening was very straight-forward - some information about the role and then a few questions verifying the contents of your CV. Basically the recruiter wants to make sure you are a viable candidate before moving you to the next step. The hiring manager interview was a fun and relaxed talk where the manager asked a broad variety of questions about your CV, yourself as a person, your motivation for joining Slack etc. No prep-work is required except for perhaps looking through your CV and cover letter, and thinking about any strengths or experiences you may want to highlight. The chrono was the first interview step that required some preparations. A team consisting of your hiring manager and 1-2 other managers will ask you a series of repetitive questions about each role in your CV, e.g. "What were your biggest wins/failures", "What did you learn?", "What would your manager and colleagues say about you?", "Why did you change employer?". It's a great idea to go through your CV beforehand with these questions in mind. As for the actual interview, it was fun and very relaxed. It may sound like an interrogation but was really just a friendly conversation. The presentation was really what made me rank the process as difficult. You will be given five or so topics/questions beforehand and should prepare a 60 minute presentation, including questions and discussions intertwined. The topics range from a brief biography to your fast start plan when joining Slack. Obviously a presentation like this requires a lot of prep-work in terms of producing material and doing dry-runs. You'll get a week or two to prep, and I'm sure Slack will be accommodating if you need more time due to work or other obligations. Again, the presentation itself is fun and relaxed once you get into it. The team asked some probing questions, but were friendly and professional. I never felt like they were trying to put me on the spot. The only negative part of the experience was that once I had received an offer and had some questions regarding the contract and benefits, the turnaround time on my questions increased significantly. I think this had to do with the acquisition by Salesforce taking up a lot of the HR & legal departments' time. Not a huge issue, but when changing jobs you obviously want to get this stuff done quickly and smoothly so that you handle the notice to your current employer professionally. Waiting a week or more for answers to your questions is a bit stressful. In the end, it all worked out and I'm happy enough with the process to register a Glassdoor account just to write this review!