Phone interview followed by in person interviews back to back as well as a 30 minute assessment. Overall took about 3 to 4 hours in total and met 6 employees.
I applied through a recruiter. The process took 3 weeks. I interviewed at Wellington Management (Boston, MA) in Apr 2014
Interview
There were several rounds of interview, first with HR, then another two rounds with 4-5 people each time (people in the role, managers, people in other groups in the same department). Those lasted about 3-4 hours each time. I worked with a recruiter so she set up and coordinated most of these interviews.
Interview questions [1]
Question 1
There weren't any odd/unexpected questions. It was mostly conversational about past experience, how it applies to current position, why I'm interested and would be a good fit, and q&a about the role and firm.