The first reason for that is, these roles require more complex interactions than they used to earlier. In a world of collaborative and marix-reporting relationships people are now bringing those relationships also to interview the prospective candidate.
No longer is it just the HR interview followed by the hiring manager interview.
So what do you do when you are in the चक्रव्यूह of the multi-round interview.
- Keep your patience - Often questions will be repeated. Specially around the resume. So resist the urge to yell "But I already answered this question three times ago". The focus is not your answer, really. The focus is the rapport you are building.
- Resist the urge to ask - why this interview. If you are being considered for the role of a marketing manager and the national sales manager and the product development manager are also interviewing you, the focus is on the collaborative work you might be doing with them in the future.
- Use the interviews for your purpose - Get as much different data points about the role than just from the hiring manager. So ask the other people what they see as the challenges for this role. What would their expectation be from a person in the role etc.
- Remember that the biggest decision is by the person whose headcount you are going to be - Find that out and impress that person the most :-)
What has been your experience if any, with a multi-round interview?