The interviewer is a very nice person. He starts with a courtesy of introduction of their company, and my introduction, but he didn't go to details of my project but skip directly to the coding exam. He let me choose problem that I'm familiar with from graph, tree and string algorithm, though I'm stuck on some questions but he kept helping me to reach the final answer. Finally, I asked questions about the required skills for a research position, and he gave a very detailed and professional answer to that, the whole interview last for an hour, with 15 minutes overtime. Though I might not pass but it was quite a good experience.