How to Answer Competency-Based Interview Questions

Competency-based interviews are structured around a specific methodology: the interviewer asks for evidence of behaviours from your past as a predictor of how you will perform in future situations. This is different from a general behavioural interview, which tests how you think and respond. A competency-based interview tests whether you meet a defined set of criteria the employer has decided in advance are required for the role.

Understanding the difference changes how you prepare.

What Competency-Based Interviews Are Testing

Large employers, particularly in financial services, the public sector, consulting, and graduate recruitment, use competency frameworks to make hiring decisions more consistent and defensible. Before the interview, they define the competencies required for the role and assign each one a set of behaviours that demonstrate it.

During the interview, every question maps to one or more of these competencies. The interviewer scores your answer against the defined behaviours, not against a general impression of how well the interview went.

Common competencies include leadership, commercial awareness, teamwork, problem solving, communication, resilience, and attention to detail.

How to Find Out Which Competencies Apply

Many employers publish their competency frameworks. Graduate employers in particular often list the competencies they assess on their careers pages. If you cannot find them explicitly, look at the job description carefully. The language used to describe the ideal candidate almost always maps directly to the competency framework behind the role.

If the job description mentions "working effectively under pressure," resilience is a competency. If it mentions "influencing stakeholders," communication and relationship-building are competencies. Build your preparation around what the description is actually saying.

How to Structure Your Answers

The STAR method applies here as it does in behavioural interviews: Situation, Task, Action, Result. The difference in a competency-based interview is that your answer needs to explicitly demonstrate the behaviour the competency describes.

If the competency is leadership and the behaviour descriptor is "motivates others to achieve a shared goal," your Action section needs to clearly show how you did that. An answer that describes what the team achieved without showing how you motivated them has not demonstrated the competency, regardless of the result.

Before your interview, map your strongest examples to the competencies you have identified. Aim for five to six strong examples that between them cover all the competencies you expect to be assessed on.

Negative Examples

Some competency questions ask specifically for examples of failure or difficulty. These questions are deliberate. They are testing self-awareness, accountability, and your ability to learn.

Do not avoid these questions with examples where everything worked out fine and the difficulty was minor. Choose a real example, own it clearly, and spend the majority of your answer on what you did next and what changed as a result.

Preparing for Unexpected Competencies

Even with good preparation, you will sometimes be asked about a competency you did not expect. The worst response is to say you cannot think of an example.

If you are caught without a direct example, briefly acknowledge that the most direct example from your experience is indirect, and then use the closest relevant example you have, explaining the parallel explicitly.