Management consulting
This was the first project in my career that involved the re-development of a COBOL based legacy system using modern (well, by the standards of the day) tools. The client, the Canadian Payments Association, is the agency responsible for clearing and settlement between Canadian financial institutions. That alone made the project interesting. As my then business partner and I considered this the flagship project for our fledgling consulting company, we invested a great deal of effort to develop a top notch study. Once we were done, I lost track of the project and client, so I don't know if they were able to put our study to good use. I certainly hope that that was the case. In any case, the Financial Institutions File, an electronic directory that is used for the routing of payments, survives to this day as an important product/service of the Canadian Payment Association (now Payments Canada).