Dentsu Behavioural Interview Competencies & How to Answer

What a behavioural interview means at an agency like Dentsu

Behavioural (or competency-based) interviews rest on one idea: past behaviour is the best available predictor of future behaviour. Instead of asking what you would do, the interviewer asks what you did, so questions usually begin 'Tell me about a time when…' or 'Give me an example of…'.

Dentsu is a global advertising, media and customer-experience group, and its roles span creative, media planning, data, technology and client service. We do not have inside knowledge of its current question bank, scoring or stages, and these vary by role, country and agency brand. What we can do is describe the competencies that agency and marketing-services interviews commonly assess, so you can prepare stories that travel across whatever questions you are asked.

Always check your invitation and the job description first. Some employers use live interviews, others use one-way video questions with a fixed thinking and answering time. If yours is recorded, practise answering to a camera, not just in your head.

Competencies agency interviews commonly assess

Read the job description and highlight the verbs and qualities it repeats. They are your best clue to what will be tested. In agency settings, these themes come up often:

• Collaboration and teamwork: working across creative, media, data and client teams, especially when views clash.
• Client focus: understanding what a client really needs, managing expectations and handling feedback gracefully.
• Creativity and problem-solving: finding a fresh or practical solution when the obvious route is blocked.
• Resilience and adaptability: coping with shifting briefs, tight deadlines and last-minute changes.
• Ownership and accountability: taking responsibility for outcomes, including mistakes.
• Commercial awareness: linking your work to business results, budgets and measurable impact.
• Learning agility and curiosity: picking up new tools, platforms or sectors quickly and staying interested in culture and trends.

Structure every answer with STAR

STAR keeps you specific and stops you rambling. Aim for roughly 90 seconds to two minutes spoken, which is about 250-300 words.

Situation: set the scene in one or two sentences (where, when, what was at stake). Task: state your specific responsibility. Action: explain what you did, using 'I' rather than 'we', and spend most of your time here. Result: say what happened, with a number or concrete outcome where you honestly have one, plus what you learned.

• Situation and Task together: about 20% of your answer.
• Action: about 55-60%. This is where interviewers find the evidence.
• Result and reflection: about 20-25%. Do not skip it, as many candidates trail off before reaching it.

Worked example: handling a difficult client or stakeholder

Question: 'Tell me about a time you had to manage a stakeholder who was unhappy with your work.' The example below is illustrative; swap in your own genuine experience and figures.

Situation: 'In my final-year placement at a small events company, a client contact told us the social content we'd drafted for a product launch felt off-brand, just five days before go-live.' Task: 'As the placement analyst supporting the campaign, I was responsible for revising the content calendar and keeping the client confident in our delivery.'

Action: 'Rather than defend the draft, I asked for a 20-minute call and asked what 'off-brand' meant to them. It turned out our tone was too playful for their audience. I collated three of their own past posts they liked, mapped the differences against our drafts, and proposed a revised tone guide. I then rewrote the first week of posts that evening and asked my manager to review before sending, flagging which posts changed and why. I also set up a short daily check-in so there were no further surprises.'

Result: 'The client approved the revised posts the next morning and the campaign launched on schedule. They asked us to use the tone guide for later campaigns. I learned to ask clarifying questions before reworking anything, because the real issue was narrower than it first sounded.'

Notice what makes it work: one clear problem, a personal action, a decision-making moment (asking rather than defending) and a reflective close.

Likely question themes and what to emphasise

You cannot predict exact questions, but you can map themes to stories. Use this as a guide:

• 'Time you worked with someone difficult' – show empathy, direct communication and a shared outcome, not blame.
• 'Time you came up with a creative solution' – show how you generated options and chose one, not just the idea itself.
• 'Time you failed or made a mistake' – own it quickly, explain the fix and the change you made afterwards.
• 'Time you handled competing deadlines' – show how you prioritised, communicated and protected quality.
• 'Time you learned something quickly' – show your method for learning and how you applied it.

Build a story bank and practise under pressure

Prepare five or six strong stories from work, study, volunteering or projects, each flexible enough to answer two or three themes. Write bullet-point notes, not scripts, so you sound natural. For each story, note the number, outcome or feedback that proves the result.

Then rehearse out loud and time yourself. Tools such as ScreenReady let you practise timed, one-way video questions and get AI feedback on structure and clarity, which is useful if your interview is recorded. Whatever you use, review your answers for rambling set-ups, missing results and too many 'we' statements.

Finally, research the agency and the role. Know which Dentsu business or client sectors you are applying to, and be ready to say why that work interests you. Agencies value candidates who show genuine curiosity about the industry.

Common mistakes to avoid

Most weak behavioural answers fail in predictable ways. Check yours against this do/don't list.

• Don't give hypotheticals ('I would…'). Do describe something you actually did.
• Don't hide in 'we'. Do make your individual contribution clear.
• Don't choose a story with no stakes. Do pick one with a real challenge, decision or tension.
• Don't blame colleagues or clients. Do show you understood their perspective.
• Don't end on the action. Do close with the result and what you would do differently.