FINRA interview questions

This was a contract position. The process took forever. They insisted to seeing sample documentation of written work from previous jobs. On one hand I was required to sign a NDA for them which is what most companies do and that is fine. Since I abide by the signed agreements didn't have the documentation and tried to generate something. In the end I still didn't get the job.

There were two initial phone screens, one highly technical and one fairly high level talk about my experience. The technical phone screen involved a lot of difficult questions around threading/concurrency and database transaction/isolation levels/etc. A few weeks later, I was invited in for a pretty intense half day interview with a few different groups of people. Each session was highly technical. I was given some logic problems. They didn't necessarily expect an answer, but just wanted to "see how I think". I was also asked multiple times to write code on the board while people watched. These problems involved writing SQL or Java.