Quantitative Risk Management Software Engineer interview questions

Had a phone interview with team lead and a developer. Reasonable questions, overall positive. Next step was a Java programming test. Completed the test and was informed that it did not meet expectations. Tried to get some comments on what they didn't like, but no answer to my email.

It was an average interview, with the interviewer asking some general questions about my background, why I am interested in the position and how my skills fit in. I was asked a few questions on object oriented programming. The interview lasted around 35 minutes. QRM employees do not seem to be very cheerful.