You can prepare for a competency interview with examples from study, volunteering or part-time work when your professional experience is limited. Choose a real situation that answers the question, then explain your responsibility, actions and result. A clear account of a modest contribution is more useful than an impressive claim you cannot explain.
What the panel is trying to understand
Competency questions ask how you behaved in a past situation. UNDP describes the purpose as finding evidence of relevant skills and behaviours, and advises candidates to prepare real examples linked to the vacancy.1 A question about teamwork therefore needs an occasion when you worked with others, rather than a statement that you are a team player.
Your example does not have to involve an international organisation. OECD's candidate guide allows personal experiences when professional examples are difficult to recall.2 The connection with the role still needs to be clear: organising a student event may illustrate planning, but it cannot establish professional experience you have not acquired.
Choose an experience that answers the question
Read the competencies in the vacancy and recall situations that let you describe a decision or action. The prompts below are preparation aids, not predictions of the questions a panel will ask.
- Teamwork: When did you help people with different priorities complete a shared task?
- Planning: When did you handle competing deadlines or adjust a plan after a setback?
- Communication: When did you explain something unfamiliar and check that it was understood?
- Learning: When did feedback change how you approached your work?
Use STAR to organise the answer
STAR stands for situation, task, action and result. OECD recommends the structure as a way to present an example clearly.2 Use it to explain your contribution in a sequence the interviewer can follow. An answer organised under four headings still needs to show what you actually did.
Suppose you were asked about helping a team meet a deadline. The following is a hypothetical practice example, not a story to borrow for your own interview.
- Situation: A student society had a week to advertise a talk, but two volunteers disagreed about the invitation.
- Task: You were responsible for sending the invitation and collecting registrations once the wording was approved.
- Action: You asked both volunteers what they thought was missing, checked the details with the organiser and proposed a corrected draft with a deadline for comments.
- Result: The approved invitation went out on time. Two registrations arrived in a separate inbox and were initially missed; you corrected the list and agreed to use one registration channel next time.
Explain your actions rather than the whole project
The practice example works because the speaker's role is identifiable. Someone else booked the venue; the speaker resolved the wording problem and handled registrations. A real answer should make that division equally clear.
Spend less time describing the organisation and more time explaining what you decided, why you chose that approach and what happened next. Give colleagues credit for their work. If the interviewer asks about your individual contribution, an answer consisting entirely of what the team did leaves the important part unanswered.
A result does not need an invented percentage. A corrected document, an agreed decision or a deadline met can be meaningful if you explain why it mattered. Use figures when you know what they measure and can defend them.
Prepare for questions and imperfect outcomes
Ask a friend to listen and follow up: Why did you choose that approach? What alternatives did you consider? Who made the final decision? How do you know it helped? An answer grounded in memory is easier to discuss than a polished script.
Prepare a genuine setback as well. Explain what went wrong, how you responded and what changed afterwards. If an improvement is still a proposal, describe it as something you would do rather than claiming you have already tested it.
Listen carefully to the question on the day. UNICEF distinguishes competency questions from situational and technical assessments.3 A request for a past example calls for something that happened; a question about a proposed situation calls for your reasoning. If your experience does not match exactly, acknowledge the limitation and ask whether a related example would be useful.
Keep the rest of the interview in view
Competency preparation is only part of preparing for the role. Review its technical work, your motivation and the instructions in the invitation. Follow any time limits and practise giving a complete answer without reading it aloud from a document.
For UNICEF applicants, the UNICEF application guide covers assessment tasks and practical arrangements as well as examples. The aim is to help a panel understand what you can contribute, using accounts that remain accurate when someone asks for more detail.
