How to answer competency-based interview questions
A practical method for choosing examples, structuring STAR answers and showing interviewers what you personally contributed.
By Stephen T Molloy · Published 26 July 2026
Competency-based interviews ask for evidence of how you have behaved in a real situation. Instead of asking what you might do, the interviewer may ask you to describe a time you handled conflict, solved a problem, influenced a decision or worked under pressure.
The strongest answer is not necessarily the most dramatic story. It is the example that makes your judgement, actions and result easy to understand. A simple STAR structure can help you organise that evidence without making the answer sound rehearsed.
Start by identifying the competency
Listen for the capability behind the question. “Tell me about a time you had to gain support for an idea” is likely testing communication, influence and stakeholder judgement. “Describe a time a plan changed unexpectedly” may test adaptability, prioritisation and composure.
Before the interview, read the job description and group recurring requirements into a short list of likely competencies. This gives you a focused evidence bank instead of trying to predict every possible question.
- Leadership: setting direction, making decisions and supporting others.
- Teamwork: sharing information, resolving differences and contributing to a group result.
- Problem solving: diagnosing a cause, comparing options and implementing a workable response.
- Customer focus: understanding a need, handling difficulty and improving the outcome.
- Delivery: prioritising work, managing risk and meeting an important deadline.
Choose one example with enough evidence
Select a real example in which you had a clear responsibility and made decisions that affected the outcome. An answer becomes weak when the candidate was only observing, cannot separate their contribution from the team’s work, or needs to invent details to make the story fit.
Recent examples are often easier to explain, but an older example can still work when it is highly relevant. Experience from employment, volunteering, education or a substantial personal project can all be useful when the context is genuine and appropriate to the role.
- What was difficult, uncertain or important about the situation?
- What were you personally expected to achieve?
- What did you assess, decide, communicate or change?
- What visible result followed?
- What did you learn that is relevant to this job?
Use STAR without overloading the opening
STAR stands for Situation, Task, Action and Result. Keep the situation and task brief. They should give the interviewer enough context to understand the stakes, not a complete history of the organisation.
Spend most of the answer on action. Explain the sequence of what you did and why: how you assessed the situation, who you involved, what options you considered, what obstacle appeared and how you adjusted. This is where the interviewer can see the competency in practice.
Finish with a credible result. Numbers are helpful when they are accurate, but evidence can also include feedback, improved quality, reduced risk, a decision reached, a deadline met or a process adopted by others.
Keep your own contribution visible
Team examples often disappear into repeated use of “we”. Give the team appropriate credit while making your own actions clear. Phrases such as “I proposed”, “I checked”, “I brought the group together” and “I changed the plan” help the interviewer understand your responsibility.
Do not turn the answer into a list of claims. Saying you communicated well is less convincing than explaining who needed information, what you told them, why you chose that approach and what happened next.
Prepare for follow-up questions
Interviewers may ask what alternatives you considered, how others responded, what you would change or what the result meant. Preparation should therefore focus on remembering the real example rather than memorising a script.
Write short prompts for each STAR stage, practise aloud, then reduce the notes further. A natural answer with clear evidence is usually more persuasive than a polished speech that does not respond directly to the question.
- Aim for a focused answer of roughly two to three minutes, then allow questions.
- Use plain language and explain unfamiliar context briefly.
- Never borrow an online model answer as if it were your own experience.
- Prepare several examples so one story is not forced into every competency.
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