mba colleges want working experience it's related to finance,marketing or operation.if I am doing a back office job than it is helpfulor not
Most of the IIMs consider work experience in any domains. If you take any IIMs, more than 75 percentage of students will be engineering graduates and most of them belong to IT industry where they worked as software developers or any other non managerial employees. So it's not necessary that you should belongs to finance, marketing or operation. There are civil enginneers, accounts, dentist and many other people have work experience in different domains in IIMs and other top bschools.