There were several rounds of interviews with diff employees and a logic task. A good mix of questions. There will most likely be 3-4 rounds of interviews with people. Come prepared with info on the company and why you want to work there.
Associate applicants have rated the interview process at IMP Consulting with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 100% positive. This is according to Glassdoor user ratings.