Sent cv and heard back soon from hr, then did four other interviews before receiving an offer. During the interviews, I got questions about motivation, background and technical questions, no written task required

Waste of time. I was selected for a first round with HR, that phone call mostly consisted of the recruiter raving about how great the company is and explaining the recruitment process. I was then led along for a few weeks as I was told multiple times that the team would reach out to me by the end of x week about the next interview but never did. Then eventually I was completely ghosted. If they treat candidates with so little respect imagine how they treat their employees.