I applied through university. The process took 4 weeks. I interviewed at United Nations (New York, NY) in May 2015
Interview
Applied through University's career center. Sent in Resume, Cover Letter and writing sample (research paper). Called and asked for an interview. Interview completed via Skype with supervisor. It was a laid-back interview (which was partially due to cultural values of mission). Make sure that for any UN interview you dress to impress in full business. Blazer recommended, very formal environment. Called a week later offering me the position. Started that next week.
Interview questions [1]
Question 1
How have the courses you've taken thus far in university prepared you for this position?
UN uses competency-based interview to assess candidates suitability. Such interview may take place either via telephone, video conference, or in person. Candidates will be notified in advance of the time, duration and means and/or place of the interview.
Interview questions [1]
Question 1
Relevant Knowledge about means of implementation of 2030 agenda for sustainable development
I applied online. I interviewed at United Nations (New York, NY) in Jan 2013
Interview
They ask a lot of information and proposal. The process is very slow and requires a lot of interviews to get the job. Be prepared for 10 interviews by different people including people in other departments.