The process went as:
1. Internal Recruiter Qualifying Interview - 30 Minutes and included more details about the company and position along with answering some standard project management questions.
2. Hiring Manager Interview and Plum Assessment - Plum assessment was conducted prior to the interview, to assess my general fit for the type of position they are hiring for. The hiring manager was pleasant and conversational, I left this interview with a genuine interest for the position as I felt I could offer them significant value and it would be a good fit for me.
3. CCO Interview - Positive and conversational, similar to the interview with the hiring manager.
4. Panel Interview based on case study presentation. - I was provided a case study for a project that had gone off track and was asked to break down the problems, identify remediation approaches in order to correct the program. Following the presentation and some questions, it opened up to any topic. 4 people were included in the panel with the hiring manager, CCO and a CS VP and another recently hired Senior PM.
Overall it was a pleasant experience. My guess is that they hired another candidate that they had previously worked with, which is an inherent advantage. Also, I had cited a salary above their published hiring range, but agreed it was attainable prior to the first interview. It was a number that would have compelled me to leave my current position, but would potentially make me less appealing against other candidates that had agreed to the originally stated range.