Relatively straight-forward and simple process, but did take quite a while from initiation until completion. There were effectively 3 key rounds as is called. 0. Initial phone discussion and screening 1. McKinsey's Problem Solving Test (PST) 2. First Round (2x 1:1 interviews with folks within Implementation Group, either Implementation Leads or Sr Implementation Leads) 3. Second Round (2x 1:1 interviews with partners, possibly from the Implementation Group) Although it's interviews for an implementation role, do not expect all case studies to be related purely to operations. Below are some examples of the case studies I was presented: - market sizing and channel optimization for a consumer goods distribution network - maintenance cost optimization for a manufacturer - market price optimization & sizing for telco - logistics transportation business case Overall, enjoyable cases and had fun doing them with the interviewers. Key pieces of advice is not to get bogged down by too many frameworks, but keep them in the back of your mind when needing to draw upon ideas or to ensure you've thought through something comprehensively exhaustive. Key thing to remember is the basics of consulting around structure and MECE. Take time to structure your approach and your summary. No difficult mathematics is involved, very simple exercises - what matters most is being able to be structured and keeping track of the flow either on paper or in your mind. Overall, just try to enjoy the process and do take time to refer to some of the case examples on McK's website.