A competency-based interview is a structured interview in which every question targets a specific skill or behavior the job requires, such as teamwork, decision-making or communication, and you answer with real examples from your past. Interviewers score each answer against the same set of competencies, usually on a fixed rating scale.
The term is especially common in UK, European and public-sector hiring, where employers often publish the competencies (or "behaviours") they will assess. Two official sources show how it works in practice:
- US federal guidance. The US Office of Personnel Management's structured interview guide (September 2008) says questions should reflect competencies drawn from a job analysis, and that a structured interview typically assesses four to six competencies unless the job is unique or high level (OPM structured interview guide).
- UK Civil Service. The government's Success Profiles framework, first published in June 2018, assesses up to five elements: behaviours, strengths, ability, experience and technical skills. The Government Statistical Service's guidance on adopting it says the framework "moves away from a purely competency based system of assessment" (GSS guidance on Success Profiles, 2019). Behaviours are still tested with examples: as of October 2026, the behaviours page says you may be asked for examples of when you have shown a behaviour (Civil Service behaviours).
How a competency-based interview works
- The employer chooses the competencies. They come from an analysis of the job and are often listed in the job advert or candidate pack.
- Each question targets one competency. Typical openers are "Tell me about a time when…" or "Give an example of…". OPM's guide illustrates interpersonal skills with a question asking you to describe dealing with people who were difficult, hostile or distressed, what you did and what resulted.
- The interviewer probes. Follow-ups such as "What did you do personally?" test whether the example is real and how large your part was.
- Answers are rated on a scale. OPM recommends at least three proficiency levels, ideally five to seven, with example behaviors written for each level and one scale used for every candidate.
- Ratings are combined. Interviewers often compare ratings, and the scores feed the decision alongside any tests, presentations or other rounds.
Example competencies and questions
Every framework has its own list. As an example, the UK Civil Service lists nine behaviours (as of October 2026). The questions are examples we wrote, not official questions.
| Behaviour | Example question (ours) |
|---|---|
| Seeing the big picture | "Tell me about a time you changed your work to support a wider organizational goal." |
| Changing and improving | "Describe a process you improved. What changed as a result?" |
| Making effective decisions | "Tell me about a decision you made with incomplete information." |
| Leadership | "Give an example of when you kept a team motivated through a difficult period." |
| Communicating and influencing | "Tell me about a time you persuaded someone who disagreed with you." |
| Working together | "Describe how you built a working relationship with a difficult colleague." |
| Developing self and others | "Tell me about a time you helped a colleague learn a new skill." |
| Managing a quality service | "Give an example of how you improved the service a customer received." |
| Delivering at pace | "Tell me about a time you delivered good work under a tight deadline." |
What a competency-based answer looks like
Example we wrote for illustration.
Competency: making effective decisions. Question: "Tell me about a time you had to make a decision without all the information you wanted."
- Situation: "I led a team of 30 at a benefits call center. Our case system went down two days before a payment deadline, and IT couldn't say when it would be back."
- Task: "I had to decide by noon whether to move the team to a paper process, knowing it would slow us down if the system returned quickly."
- Action: "I checked how many cases were due, asked IT for best and worst estimates, and talked the risk through with my manager. About 600 cases were due and the worst estimate was three days, so I moved half the team to paper and kept half ready to switch back."
- Result: "The system returned the next afternoon. We met the deadline for all but 12 cases, cleared those the next morning, and the split approach became our written contingency plan."
Why it rates well: it shows information gathered, options weighed, people consulted, a clear decision, a measurable result and a lasting change.
Competency-based vs behavioral vs situational interviews
The three overlap, and many interviews mix them. The difference is what each question asks for and how tightly it ties to a published framework. See what a behavioral interview is and our situational interview questions guide for more on each.
| Competency-based | Behavioral | Situational | |
|---|---|---|---|
| Asks about | Past examples of named competencies | Past examples, often tied to company values | What you would do in a hypothetical scenario |
| Typical opener | "Give an example of when you…" | "Tell me about a time…" | "What would you do if…?" |
| Framework | A published list, often with level descriptions | Internal values or competencies | Job-related scenarios |
| Rated against | A fixed scale per competency | Values or competencies, scale varies | Expected responses for each scenario |
How to prepare for a competency-based interview
- Find the list. Read the job advert, the candidate pack and any framework it names. If nothing is published, infer the competencies from the job's main duties.
- Collect two examples per competency. A second story lets you handle follow-ups and avoid repeating yourself. The UK Civil Service says examples can come from work, volunteering or hobbies.
- Write each in STAR form, with "I", not "we". Keep the situation short and spend most of the answer on your actions. The STAR method and the free STAR story builder help.
- Quantify the result. Numbers, deadlines met and what changed afterward make a high rating easier to justify.
- Match the level. The UK Civil Service describes each behaviour differently by grade, so senior roles expect wider scope and influence.
- Rehearse out loud and get scored. CoPilot Interview's Mock Interview draws its questions from your résumé and the job description, lets you set an optional focus such as leadership, and scores each spoken answer out of 10 with what to fix and a model answer. The free browser mock interview has a behavioral track and nothing to install.
Common competency-based interview mistakes
- Answering hypothetically. "I would…" earns little when the question asks what you did.
- Telling a team story. Interviewers rate your actions, so say "I".
- Using one story for everything. It rarely shows every competency well.
- Spending half the answer on background. The rating comes from the action and the result.
- Missing the competency. A story about hitting a deadline doesn't score for influencing unless you show the influencing.
- Stopping without a result. End with the outcome and what you learned.
Competency interviews are often held by more than one interviewer; see what a panel interview is, or browse the AI interview glossary.
Practice competency questions before the real thing
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Try a free AI mock interviewFAQ
Is a competency-based interview the same as a behavioral interview?
Mostly. Both ask for real past examples. A competency-based interview ties every question to a named competency from a framework and rates each answer on a fixed scale. "Behavioral interview" is the broader term, and employers often use the two names for the same format.
How many competencies are assessed in one interview?
It depends on the employer. US federal guidance from OPM says a structured interview typically assesses four to six competencies. The job advert or candidate pack usually tells you which ones.
How many examples should I prepare?
Aim for two per listed competency. Many stories cover two or three competencies, so eight to twelve strong, recent stories are usually enough for one interview.
Can I use examples from outside work?
Often, yes. The UK Civil Service says examples can come from work, volunteering or hobbies. Use a non-work story when it shows the competency more clearly than your job does.
How are competency-based interview answers scored?
Each answer is rated against its competency on a fixed scale, often with descriptions of weak, acceptable and strong evidence. OPM recommends at least three proficiency levels and ideally five to seven. Scales vary by employer, so read any scoring guide the employer publishes.