I applied through a recruiter. I interviewed at Oliver Wyman in Mar 2026
Interview
The whole process consisted of 5 interviews with different members of the team.
3 of them were discussions about my background, my experience and my motivations (Typical HR questions). 1 was a business case analysis (visit Oliver Wyman website for examples) and 1 technical about Python, SQL and Data Engineering.
Most of the interviewers were really cool guys, and this made me feel comfortable.
Interview questions [1]
Question 1
Describe a python project that you have completed, Difference between deep and shallow copy, mutable and immutable collections, OOP questions, Difference between ETL and ELT, Why to prefer ELT over ETL, and 2 SQL problems that i solved using joins and window functions
