The process was straight forward and in terms of time investment ok.
1. Call with the Hiring Manager to check if it would be potentially a fit for both sides
2. Technical interview with the principal engineer
3. A talk with the head of engineering
4. A talk with the teamlead with a lot of insights into the working mode, challenges, the situation, expectations, etc.
5. Team fit - A conversation with the team members which in both sides had the chance to get to know each other better
It sound like it's quite a lot of interviews, but none of them took super long. For each round, the next follow up was set up a few days later. I appreciate the comfortable atmosphere and transparency in the interviews.
To wrap it up: The hiring process was a nice experience, the interviewers were communicative, transparent, no trick questions, and really interested in you - Nothing to complain from my side.