The job interview process can be lengthy. Being interviewed once and getting a job offer is typically a thing of the past. UNDP have an involved interview process starting with screening interviews, followed by in-person interviews, second interviews and even third interviews.
The in-person job interview is typically a one-on-one interview between the applicant and a hiring manager. The interviewer will ask questions about the applicant's experience and skills, work history, availability, and the qualifications the company is seeking in the optimal candidate for the job