I worked for this company twice. The first time I interviewed I was recommended by a woman I'd worked with previously. I had an interview with HR, one with the manager who would be my boss and another with his manager. There were a lot of questions to cover domain knowledge and also accounting. They have a multi-currency accounting system that is sophisticated. I was up front about my only 'basic' accounting skills and was hired on the strength of domain knowledge in other areas. Even though I didn't focus on the accounting modules went back to college for a couple semesters of financial accounting because the modules were so tightly integrated with the accounting modules. I left the company after a few years there and when I'd been gone two years, two managers called me up, asked me to lunch and made me an offer to come back. That was an easy interview because they knew my work already.