I am looking for native/near-native English speakers with whom I can do cases as an interviewer (I got an offer from McK and had done 50+ cases prior to the interview). English is my second language at around C1 level, but recently I haven't had many opportunities to use it at work/daily life. I can give you cases with comprehensive feedback or we can just talk about the preparation process, business-related topics, etc. I have a strong background in math/statistics/data analysis and would be more than happy to share some experiences.
Funny thing is that all the cases I was given during the interviews were in the local language, thus, except for PST, my English skills were not evaluated. I find it quite strange that a company known for a very difficult interview process with a strong focus on avoiding false positives would just overlook such a critical factor. It is even more strange as neither have I worked nor have I studied abroad, and it was specifically stated in my resume.