While using this question as a key indicator on how you'll fit with the team and the organization at Slack, it will be very important for you to research as much as you can on the work environment at Slack so you can match your priorities to that environment. If you have the opportunity to speak with an employee at Slack prior to your interview, that can shed valuable information. In the end, the culture and value of an organization are often a key indicator of long-term success in a job, so make sure that you reflect your values into what the company values.