I applied online. The process took 2 months. I interviewed at UNOPS (Bangkok) in Dec 2018
Interview
Competency based interview which mostly from the TOR/Job description, suggestion is to try to find example of questions related to the competencies on the internet. Interviewers usually ask around 3-4 competencies and emphasize on using real scenario to answer
Interview questions [1]
Question 1
Tell me the time when you have to deal with difficult people