I knew the postion from one of my friends, who got it from a recruiter. Had a phone interview first with the recruiter and it went pretty well.Dig out a little bit more information from the recruiter. The phone interview with the hiring manager was about half hour and more focused on scientific side as usual. Specifically asked the solution for the technical difficulty they have right now and what's my suggestion. Provided a couple of potential new ideals while different from what they are trying. The one i think may not lead to a success depending on the level of tolerance. All went ok in genral, while they think that they are looking for somebody with closer experience in the specific area. It is difficult to control how much you should tell in detail if they ask the specific technical question. As you know sometimes people just fish creative ideas.