I applied online. The process took 4 weeks. I interviewed at United Nations
Interview
I applied online, CV and Cover letter. I attached some grade documents too. I was contacted to undertake a Skype interview because I lived in a different country. The interview lasted over an hour. I applied to UN offices in different countries (you can do more than one application). I got interviews and offers from each country application. Unsurprisingly, some interviews were harder than others.
Interview questions [1]
Question 1
Asked which languages I could speak. Asked some technical questions (e.g. about how we could quantitatively measure successful policy implementation etc). Asked how I differed from other applicants.