The interview process is very friendly. HR ask me some general questions about myself (like education background and professional experience), and they tell me something about the position and responsibility, and ask me if I have relative experience. In addition, they ask why I want to work in UN. Generally speaking, not a hard interview

Need to apply on the Internet and wait for a couple days. I was interviewed at the headquarter of United Nations. Warm and welcoming impression. Very approachable interviewer panel. They were not trying to square the interviewees at all. Make sure to arrive on time. That's all.