First time I have ever been ghosted after 3 rounds of interviews. First interview was a 15 min phone call with recruiter. 2 weeks later I was asked to attend 3 thirty minute virtual interviews with hiring managers. 2 weeks later they asked my to come in person for 3 one hour interviews. I sent a follow up email to managers and have not heard back after a month. Very lengthy, slow, and unprofessional process.