About an hour long with valid information about the hiring manager then questions for me that were logical but not too difficult to answer. NG can have a set of interview questions that won't be job related.

The interview was a panel type interview with the three people that manage the progress and over see the particular project and team directly supporting the project. The project manager, the immediate supervisor and the project team lead. This allowed for casual banter which, in my opinion, takes the anxiety and stress of an interview to a minimum.