When I first began communicating with Smartsheet, I was applying for an entry level sales role. I had a brief phone interview with the recruiter, who saw that I was a better fit for their customer support engineer role. After that phone interview, I had a second phone interview with a different recruiter. In each of the interviews, I was asked questions about the software, how to use it, and any suggestions I may have to improve it. For this position/company, it is absolutely crucial to use the software, have familiarity with its settings, and be able to explain your experience using it. Even better would be to understand how it compares to competitors, even if you can just make comments between Smartsheet and one other project management software.
They called me in for an interview onsite which lasted about 3.5 hours. I had about 6 interviews - the first was with two people, then one person, then two people, then the CEO of the company, and I ended with individual follow-up interviews with both of the recruiters. I really appreciated that the CEO took time to meet with me personally. Their whole interview process proved to me that they really are serious about finding the right fit.