Two rounds with HR person in the company, excusing that the scientific interviewer is on vacation, waiting for more than a month for the scientific interview, a 40 min interview and rejection in 2-3 days as they had candidates with industrial experience and so on

I first interviewed with an internal recruiter who gave me the opportunity to ask questions. They gave me an overview of the company. There were several interviews with a site lead, manager, and staff and it was very comprehensive.