What is competency-based interviewing? Definition, method and examples

Competency-based interviewing is a structured interview method in which each question targets one competency the job requires, such as planning, stakeholder management or problem solving, and the candidate is asked for a real example of when they showed it. Answers are scored against behavioral indicators written in advance, so the interview measures what people have done rather than how well they describe themselves.

This page explains what a competency is, how a competency-based interview is built and run, an example question with scoring, how the method differs from behavioral, situational and strengths-based interviews, and when it fits. For ready-made questions with anchors, see 24 behavioral interview questions with a scoring rubric.

What is a competency?

A competency is a cluster of knowledge, skills, abilities and behaviors needed to do a job well, described in terms someone could observe. "Leadership" is a label; "sets clear priorities for the team, checks progress and steps in when work slips" is a competency definition you can interview against.

The U.S. Office of Personnel Management's structured interview guide starts every interview from a job analysis that identifies the competencies the work requires, and says a structured interview typically assesses four to six of them unless the job is unusual or very senior. Its worked example defines interpersonal skills in behavioral terms, including dealing effectively with people who are difficult, hostile or distressed, and then writes the interview question from that definition.

How does competency-based interviewing work?

1. Analyze the job and list the competencies it needs from day one.
2. Choose four to six for the interview loop, and decide which interviewer covers which.
3. Define each competency with positive indicators (what good looks like) and negative indicators (what weak looks like).
4. Write one main question per competency that asks for a real past example. OPM suggests superlatives such as "most", "last", "worst" or "least" to point the candidate at one specific incident.
5. Plan the probes. Follow-ups that draw out the situation, the candidate's own actions and the result, often remembered as STAR: situation, task, action, result.
6. Score each competency separately against the indicators, straight after the interview, with the evidence written down. A hiring rubric holds the indicators; each interviewer records ratings on an interview scorecard.

The method has deep roots. Janz (1982, Journal of Applied Psychology) compared patterned behavior description interviews, built on questions about past behavior, with unstructured interviews, and Latham, Saari, Pursell and Campion (1980) set out the situational interview, built on hypothetical job dilemmas. Most competency-based interviews today use the first format and borrow the second where candidates lack direct experience.

What does a competency-based question and score look like?

An invented example for an office manager role:

Competency: Planning and organizing
Definition: Breaks work into steps, sequences it around fixed dates and
dependencies, and adjusts the plan when something changes.

Positive indicators                  Negative indicators
- Lists dependencies and deadlines   - Describes doing tasks as they came
- Builds in a buffer or fallback     - No plan for what could go wrong
- Tells people when the plan moves   - Others discover changes late
- Checks the result afterwards       - Cannot say how it turned out

Question: "Tell me about the most complicated event or move you had to
organize in the last two years. What had to happen, in what order?"

Probes: What was fixed and what could move? What went wrong, and what
did you do? Who did you keep informed? How did it turn out?

Answer excerpt: "We moved 40 people to a new floor over a weekend (example
figure). I mapped IT, furniture and access cards backwards from Monday
8 a.m., booked IT for Saturday so we had Sunday as a buffer, and sent a
seating plan on Thursday. The access cards failed on Sunday; because I
had the vendor's weekend number, they were reissued by 6 p.m."

Rating: 4 of 4. Four positive indicators shown with specifics; the
fallback was planned, not improvised.

The score comes from the indicators, not from the story's polish. A candidate who told the same story less fluently, with the same actions, earns the same rating.

How is it different from behavioral, situational or strengths-based interviewing?

The UK Civil Service shows how these fit together. Its recruitment framework, Success Profiles, assesses up to five elements: behaviors, strengths, ability, experience and technical (GOV.UK, as of October 2026). The Civil Service moved to it from its earlier competency framework; the competency framework page said the move would be completed by January 6, 2019 (GOV.UK). Behaviour-based questions are still there; they are now one element among several.

How do competency scores become a hiring decision?

A competency-based interview produces several separate ratings, not one verdict, and the way they are combined should be agreed before the first candidate. A simple rule set works for most roles:

• Must-have competencies are gates. A rating below the agreed minimum on any of them ends the process, however strong the rest.
• The rest are combined by a stated rule, such as an average or a weighted total, rather than by an overall impression formed afterwards.
• "Not assessed" stays visible. A competency nobody tested is a gap to fill in the next round, not a neutral score.
• Disagreements are settled with evidence. When two interviewers rate the same competency differently, each gives the answer behind their rating, and the rubric decides. That is the job of the hiring debrief.

Keeping the ratings separate also makes feedback easier. You can tell a candidate which competency fell short and why, instead of offering a vague "we went with someone else".

What are the most common mistakes?

• Too many competencies. Ten competencies in one hour means one question each and no probing. Stay within four to six across the loop.
• Vague definitions. "Communication" means something different to every interviewer. Define it for this job, with indicators.
• Accepting "I would" to a "tell me about a time" question. A hypothetical answer to a past-behavior question is not evidence of past behavior. Ask again for a real example, then score what you get.
• Not separating "we" from "I". "We launched the new process" says nothing about the candidate's part. Ask "what did you do personally?".
• Rewarding rehearsal. Some candidates have polished stories, and some answers are now drafted with AI. Probes about specifics, such as what went wrong and what they would change, separate lived experience from a script.
• Forgetting technical skill. Behavioral competencies do not tell you whether someone can do the technical core of the job. Pair the interview with a work sample where it matters.
• Treating soft skills as personality. Score what the candidate did, not whether they seemed outgoing; how to assess soft skills in interviews covers this.

When should you use competency-based interviewing?

It works best when candidates have had real chances to show the competencies, which covers most experienced hires, and when several interviewers need a shared way to split and score a loop. OPM notes that both behavioral and situational formats are effective, and that behavioral description interviews show higher validity for highly complex work such as professional and managerial jobs (OPM, as of October 2026).

Adapt it for candidates without direct experience. Let graduates and career changers draw examples from study, volunteering or a previous field, add situational questions where the job is new to them, and consider strengths or work-sample exercises. The guides on interviewing career changers and interviewing new graduates cover both. To build the loop itself, start from the interview guide template and paste in anchors from the behavioral anchors library.