Competency-based interviews are structured so that every candidate answers the same questions and is scored against the same criteria. The interviewer's job isn't to have a conversation — it's to gather specific behavioural evidence for a predefined list of competencies. Understanding this changes how you should prepare.
What competency-based interviews are
The premise is that past behaviour predicts future behaviour. Every question asks you for a real example of something you did. The interviewer uses that example to infer how you're likely to behave in the role.
This differs from traditional interviews (where you can speak hypothetically — "I would do X") and from technical interviews (where you solve problems live). In competency-based interviews, every answer must be grounded in something that actually happened.
Common in: government and public sector roles, large corporate graduate schemes, financial services, consulting, and any organisation with a structured approach to talent management.
The STAR method
STAR is the standard framework for competency answers:
- Situation: Brief context — what was happening, what was the challenge?
- Task: What was your specific responsibility in this situation?
- Action: What did YOU do? (not "we" — your specific actions and decisions)
- Result: What happened? Quantified if possible. What did you learn?
Most answers should run two to three minutes. The Action section should be the longest — this is where the assessor gathers evidence of your competence. Don't spend the first minute setting up context and run out of time on the substance.
Most common competencies and questions
Communication
"Tell me about a time you had to explain something complex to someone who didn't have the same background as you."
"Describe a situation where you had to adapt your communication style to get your message across."
Leadership
"Give me an example of when you motivated a team to achieve a goal."
"Tell me about a time you led through a period of change or uncertainty."
Problem-solving and analysis
"Describe a complex problem you had to work through. How did you approach it?"
"Tell me about a time you used data or analysis to inform a decision."
Teamwork and collaboration
"Tell me about a time you worked effectively as part of a team."
"Give an example of when you had a disagreement with a colleague and how you resolved it."
Influencing and stakeholder management
"Tell me about a time you persuaded someone to change their mind or adopt a different approach."
"Describe a situation where you managed a difficult or resistant stakeholder."
Resilience and handling pressure
"Describe a time you had to deal with significant pressure or a setback. How did you handle it?"
"Tell me about a time you received critical feedback. What did you do with it?"
Commercial awareness
"Give me an example of when you made a decision that had a direct commercial impact."
"Tell me about a time you identified a business opportunity or risk."
Handling follow-up probes
Trained assessors will probe your answers. This is normal and expected — it's how they gather more evidence, not a signal that your answer was wrong.
Common probes:
- "What specifically did you do?" (If your answer was too "we"-focused)
- "What was the outcome?" (If you didn't give a result)
- "How did you feel in that situation?" (Probing emotional intelligence)
- "What would you do differently?" (Probing self-awareness and learning)
Answer probes directly and concisely. Don't restart your whole answer — just answer the specific question being asked.