After being contacted by a recruiter, and taking a personality test, I was in a 5 individual interviews with member of the team including the CEO. I also gave an hour long presentation to everyone I interviewed with. After getting generally positive feedback, I was ghosted with no additional communication. I don't mind not getting a job, but the lack of professionalism when asking for so many interviews and a presentation really says something about the company. It seems they are looking for new / big ideas, but I don't believe they have even implemented best practices as evidenced in my review of their product or in their treatment of interview candidates.