You sign an NDA, they send ahead info about company culture and mission. My interview process was long and dragged out, I interviewed for months. The first was virtual with who would have been at the time my direct supervisor. I then interviewed in person with another 6-7 people in the course of a few months. After my last interview, with the person that would actually be the supervisor for it I was told I did not get the job. But only after I called a few times to find out what the status was. A couple of things that were red flags to me: the CEO doesn't have an office, he'll just pop in and work from anywhere. Another question I asked them is, on a company that the majority of their client base is female, how many women are in leadership positions (this stumped the interviewer, a woman, who told me 50%, but that was including anyone with a title manager) the answer was actually none. No women in C level positions at the time I interviewed. Overall the people were extremely friendly and nice, the interview process was exciting and invigorating, I enjoyed the conversations I had with everyone. But I was not sad about not getting the job.