This is no issue at all - many of us were in this case. I joined BCG after ~15 total years in industry for example
MBB is looking for potential, and assumes they will have to train you. Indeed, they even assume they will have to untrain you from your current practices, and retrain you to theirs.
Assuming you aren't about to graduate from a target school, you first need to focus on networking, getting ready for a possible case interview, and then actually apply. Once you do get an interview, you will be treated the same as other more traditional candidates.
This is no issue at all - many of us were in this case. I joined BCG after ~15 total years in industry for example
MBB is looking for potential, and assumes they will have to train you. Indeed, they even assume they will have to untrain you from your current practices, and retrain you to theirs.
Assuming you aren't about to graduate from a target school, you first need to focus on networking, getting ready for a possible case interview, and then actually apply. Once you do get an interview, you will be treated the same as other more traditional candidates.