How to answer competency-based interview questions

Competency-based interviews are less about saying the “right” thing and more about showing how you’ve handled real situations at work.

You might be asked about a time you solved a difficult problem, dealt with competing priorities, adapted to change or worked through a disagreement. What matters is the example you choose and how clearly you explain your part in it.

In this guide, we’ll look at the questions you’re likely to come across, how to choose examples that actually demonstrate your skills, what interviewers are listening for and how to turn your experience into a clear, convincing answer with a little help from the STAR technique.

What is a competency-based interview?

A competency-based interview assesses whether you can demonstrate the skills, behaviours, or knowledge required for a particular job.

The competencies will vary by role, but common examples include soft skills such as communication, problem-solving, teamwork, adaptability, leadership, decision-making and prioritisation.

In a structured interview, candidates may be asked the same predetermined questions and their responses assessed against consistent criteria. This allows employers to compare evidence relating to the job rather than relying only on general impressions.

Are competency-based, behavioural and situational questions the same?

The terms are sometimes used interchangeably, but there is a useful distinction:

• Competency-based describes what the employer is assessing: a particular job-related competency.
• Behavioural questions ask what you actually did in a past situation: “Tell me about a time when…”
• Situational questions ask what you would do in a hypothetical situation: “What would you do if…?”

A competency-based interview can include behavioural questions, situational questions or both. 

For a past-experience question, STAR is usually the most useful structure. For a hypothetical question, explain the steps you would take, why you would take them and the outcome you would aim to achieve.

How can you recognise a competency-based question?

Listen for questions that ask for a specific example, such as:

• “Tell me about a time when…”
• “Give me an example of…”
• “Describe a situation where…”
• “Walk me through an occasion when…”
• “When have you had to…?”

The skill being assessed may be obvious, but not always. For example:

The exact competencies depend on the job. Employers may publish them, but the job description is usually your best starting point.

How to prepare for competency-based interview questions

1. Identify the competencies in the job description

Read the responsibilities, required skills and person specification carefully. Highlight repeated phrases and action words.

For example:

• “Coordinate multiple stakeholders” may indicate communication and collaboration.
• “Work effectively in changing environments” may indicate adaptability.
• “Identify and resolve technical issues” may indicate analysis and problem-solving.
• “Deliver projects to schedule and budget” may indicate planning, ownership and commercial awareness.

Don't prepare only for a generic list of interview questions. Prepare for the competencies that matter to this particular role.

2. Build a small bank of evidence

List several situations where you made a useful contribution, overcame a challenge, improved something, learned a new skill, or handled a difficult decision.

Your examples can come from:

• Permanent or contract roles
• Internships and placements
• Academic or personal projects
• Volunteering
• Professional associations
• Community activities
• Relevant extracurricular experience

STAR examples don't have to come only from paid employment; volunteering, classes, leadership activities and other relevant experiences can also provide useful evidence.

A single substantial project may demonstrate several competencies. However, prepare a range of examples so that you are not forced to use the same story for every answer.

3. Match each example to one or more competencies

Create a simple story bank:

One story can answer different questions, but the emphasis must change. A project-delay example could demonstrate planning in one answer and stakeholder communication in another.

4. Outline your answers instead of scripting them

Write short notes under Situation, Task, Action and Result. Avoid memorising a full paragraph.

A memorised answer can sound unnatural and may become difficult to adapt when the interviewer asks a follow-up question. Government career guidance recommends keeping examples conversational and being ready for further questions.

5. Practice aloud

Speaking an answer is different from reading it silently. Practice with a friend, career adviser or recruiter, or record yourself and listen back.

Check whether you:

• Answered the question
• Gave enough context without overexplaining
• Used “I” when describing your contribution
• Explained how and why you acted
• Reached the result before losing focus
• Sounded natural rather than rehearsed

One to two minutes can be a useful practice benchmark for many STAR answers, although relevance and clarity matter more than reaching an exact time.

6. Use AI for practice (not to invent your experience)

AI tools can turn a job description into practice questions, challenge you with follow-up questions, or flag unclear or repetitive answers. Some interview-preparation tools can also provide feedback on pacing and filler words.

However, the evidence must remain yours. Don't use AI to fabricate projects, responsibilities, qualifications or results. A polished fictional story is less valuable than an honest example you can explain confidently when the interviewer probes further.

How to use the STAR method

STAR stands for:

• Situation: What was happening?
• Task: What were you responsible for achieving?
• Action: What did you personally do?
• Result: What happened, and what did you learn?

The following framework shows how the four stages work together.

Situation: Set the context

Give the interviewer enough information to understand the challenge.

Include:

• Where or when it happened
• The relevant people or teams
• The problem, constraint or opportunity

Avoid giving a long history of the project. The situation supports your answer; it is not the main point.

Task: Explain your responsibility

Clarify what you needed to achieve and what you were personally accountable for.

This is particularly important when your example involves a team. The interviewer needs to distinguish the group’s objective from your role within it.

Action: Describe what you did

This is the evidence at the centre of your answer. Explain:

• The steps you took
• The decisions you made
• How you approached the problem
• Who you consulted or collaborated with
• How you adapted when circumstances changed
• Why you chose that approach

Use “we” when describing the wider team, but use “I” when explaining your own contribution. MIT’s career guidance specifically recommends “I” statements so interviewers can understand what the candidate personally contributed.

Result: Show what changed

Finish by explaining the outcome.

Useful results may include:

• Time, money or resources saved
• A deadline or milestone achieved
• Improved quality, safety or customer experience
• A problem resolved or risk reduced
• Positive feedback
• A lesson applied to later work

Use numbers when they genuinely add something to your answer, and you can explain where they came from. If there isn’t a meaningful metric, that’s fine. A clear outcome, positive feedback or lesson learned can be just as useful as a percentage.

And remember, the result doesn’t have to be perfect. An example where things didn’t go entirely to plan can still be a strong answer if you take ownership, explain what you learned and show what you did differently afterwards.

Examples of competency-based interview questions

The type of questions you'll be asked during a competency interview will vary from role to role and sector to sector. However, there are a handful of common behavioural interview questions that come up time and time again.

Here are five examples of competency interview questions and suggestions for answering them using the STAR technique.

Click on each question below to jump directly to examples of how you can answer them!

• Can you describe a time in your previous employment when you had to lead a team to complete a challenging project on a tight deadline? How did you ensure the project's success?
  
  

• Can you tell me about a time you had to work within a team with diverse perspectives? How did you ensure effective collaboration and positive outcomes?

• Describe an instance where you had to adapt to a significant change within your company. How did you handle the change, and what did you learn from the experience?
  
  

• Give an example of a long-term project you worked on. How did you maintain focus and ensure quality throughout the project's duration?

• Can you share an experience where you had to learn a new skill or technology to complete a task? How did you approach the learning process, and what was the outcome?

Can you describe a time in your previous employment when you had to lead a team to complete a challenging project on a tight deadline? How did you ensure the project's success?

Technique: Utilise the STAR method to detail the situation, your actions, and the outcome. This is your chance to showcase your leadership skills, organisational skills, conflict resolution and problem-solving abilities.

Example answer

• Situation: Our company received a last-minute request from a difficult client to deliver a comprehensive marketing campaign within three weeks, a task that typically takes six weeks.
  
  
• Task: As the team leader, I needed to ensure that my team completed the project on time without compromising quality.
  
  
• Action: I divided the project into smaller tasks, assigned roles based on each team member's strengths, and implemented daily progress meetings. I also facilitated open communication to address issues quickly and provided support.
  
  
• Result: We successfully delivered the campaign on time, which resulted in a 15% increase in client engagement and strengthened our relationship with the client.

Can you tell me about a time you had to work within a team with diverse perspectives? How did you ensure effective collaboration and positive outcomes?

Technique: Explain the diverse team environment, your approach to fostering collaboration, and the results. Focus on teamwork, interpersonal skills, respect for diversity, and your ability to integrate different perspectives.

Example answer:

Situation: In my previous role, I was part of a project team that included members from different departments and cultural backgrounds. This diversity brought a range of perspectives but also potential for conflict.

Task: I was responsible for ensuring that the team worked together effectively and leveraged our diverse perspectives to achieve the project goals.

Action: I organised team-building activities to help members get to know each other and understand different viewpoints. I encouraged open dialogue and active listening during meetings, ensuring everyone's voice was heard. I also facilitated workshops on cultural competency and effective communication.

Result: The team collaborated effectively, and our project was a success. We developed a more innovative solution by incorporating diverse ideas, which led to a 20% increase in user satisfaction. The experience reinforced the value of diversity and inclusion in driving creativity and performance.

Describe an instance where you had to adapt to a significant change within your company. How did you handle the change, and what did you learn from the experience?

Technique: In this scenario, explain the challenge encountered, your adaptation strategy, and the lessons learned. The emphasis is on demonstrating flexibility and the ability to learn and how these align with the company's core values.

Example answer

• Situation: Our company decided to shift to a remote work model due to the pandemic, which required significant adjustments in our workflow.
  
  
• Task: I needed to adapt to this new model and ensure my team remained productive and engaged.
  
  
• Action: I established regular virtual check-ins, introduced collaborative tools like Slack and Trello, and encouraged open communication. I also organised virtual team-building activities to maintain morale.
  
  
• Result: The transition to remote work was smooth, and our team's productivity remained high. We even found that the flexibility improved overall job satisfaction. This experience taught me the importance of adaptability and maintaining strong communication channels.

Give an example of a long-term project you worked on. How did you maintain focus and ensure quality throughout the project's duration?

Technique: Describe the project, your strategies for maintaining focus and quality, and the results. Emphasise consistency, reliability, and attention to detail.

Example answer

• Situation: I was part of a two-year project to develop a new software platform for our clients.
  
  
• Task: My role was to oversee the software's development lifecycle and ensure it met all quality standards.
  
  
• Action: I implemented a detailed action plan with milestones and regular reviews. I also conducted bi-weekly team meetings to track progress and address any issues. To ensure quality, I set up a rigorous testing process at each development stage.
  
  
• Result: The project was completed on time and within budget. The software was well-received by clients, resulting in a 20% increase in customer satisfaction. My consistent focus and quality assurance practices were key to this success.

Can you share an experience where you had to learn a new skill or technology to complete a task? How did you approach the learning process, and what was the outcome?

Technique: Describe the context in which you needed to learn the new skill, your approach to acquiring the knowledge, your actions to apply the skill, and the results achieved. Emphasise your ability to learn quickly, adapt, and apply new knowledge effectively.

Example answer:

• Situation: In my previous job, I was assigned to a major project that required proficiency in a new software tool that I had never used before.
  
  
• Task: I needed to quickly learn this software to contribute effectively to the project and meet the tight deadlines.
  
  
• Action: I enrolled in an online course to gain a solid understanding of the software. I also practiced using the tool daily and sought advice from colleagues who had experience with it. Additionally, I attended webinars and participated in online forums to deepen my knowledge.
  
  
• Result: Within two weeks, I became proficient in the software and was able to contribute significantly to the project. My ability to quickly learn and apply the new skill enabled us to complete the project on time, and the new tool improved our process efficiency by 30%. This experience highlighted my capacity for rapid learning and adaptability.

Common competency-based interview mistakes

Giving a general answer instead of an example

Saying “I’m good at solving problems” doesn’t tell the interviewer much. Back it up with a real example that shows how you approached a problem and what you did to solve it.

Spending too long setting the scene

Some context is helpful, but don’t let it take over your answer. Give the interviewer enough background to understand the situation, then move on to what you actually did.

Talking about what “we” did

Teamwork matters, but the interviewer also wants to understand your contribution. Be clear about the decisions you made, the actions you took and the role you played in the outcome.

Choosing the wrong example

Your biggest achievement isn’t always your best answer. Choose an example that actually demonstrates the skill or behavior the interviewer is asking about, even if it feels less impressive.

Making the result sound better than it was

You don’t need an impressive percentage or dramatic outcome to make your answer stronger. Stick to what actually happened and explain the impact, feedback you received or what you learned from the experience.

Memorising your answer word for word

Prepare the key points, not a script. Knowing your example well will help you speak naturally, adapt your answer to the question and respond more comfortably to follow-ups.

Forgetting to explain what happened next

Don’t finish your answer once you’ve explained what you did. Tell the interviewer how things turned out, what changed or what you learned. That final piece helps show the impact of your actions.

Frequently asked questions about competency interviews

Can I use the same example for more than one question?

Yes, if the experience genuinely demonstrates more than one competency. Change the emphasis to answer the specific question, but avoid relying on one story throughout the entire interview.

What if I don't have much work experience?

Use relevant evidence from academic projects, volunteering, internships, community activities or other situations in which you took responsibility and produced an outcome.

What if I cannot think of an answer immediately?

Pause, make sure you understand the question and choose the closest relevant example from your story bank. A short thinking pause is better than beginning with an example that does not fit.

Should every STAR answer include numbers?

No. Quantify the result when reliable numbers are available. Otherwise, explain the outcome clearly—for example, whether you resolved the issue, reached agreement, prevented a delay, improved a process or applied a lesson later.

What if the interviewer asks a hypothetical question?

Explain what you would do, in what order and why. If helpful, briefly connect your approach to a similar situation you have handled before. Hypothetical situational questions are distinct from behavioural questions that require a past example.

Prepare your evidence, not a performance

Competency-based interviews become easier when you stop trying to predict every possible question and start preparing a flexible set of truthful examples.

Review the job description, identify the competencies, build your STAR story bank and practice explaining your contribution aloud. The goal is not to deliver a perfect speech. It is to give the interviewer clear, relevant evidence of how you work.

Use Airswift’s free STAR interview technique template to prepare your examples, or explore the latest STEM job opportunities.