Product Designer
How do you choose between a quick low fidelity sketch and a detailed interactive prototype?
What the interviewer is looking for
- This question tests prototyping & tools. Chooses fidelity deliberately, is fluent in current design tools, and uses prototypes to learn quickly.
- Strong answers: Matches fidelity to the question being answered and the audience, values speed early, and uses higher fidelity for testing interactions or getting sign-off.
- Likely follow-up: Tell me about a time you used the wrong fidelity. What happened?
Another way it may be asked: When would you just sketch something on paper, and when would you build a clickable prototype instead?
A structure to follow: Answer, explain, example, limits
- Step 1
Answer
Give your direct answer in the first sentence so the interviewer knows where you are going.
- Step 2
Explain
Say how it works or why you would do it that way, in plain words before jargon.
- Step 3
Example
Anchor it in something you have actually done or seen, with the detail that shows hands-on experience.
- Step 4
Limits
Say when your approach would not be the right one. It shows judgement.
This is guidance on shape, not a script. Use your own real experience and facts; never invent details to fill a gap. See the STAR guide and answer frameworks.
Common slips
- Reciting a definition without showing you have applied it.
- Using terms you cannot explain if asked a level deeper.
- Claiming experience beyond what you can discuss in detail.
How to practise it
Say the answer in 90 seconds, then answer the follow-up as if it were a new question.
Related questions
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- Walk me through a project in your portfolio, starting with the problem you were solving rather than the screens.
- What are a few things you check to make sure a screen works for people using a screen reader or only a keyboard?
- Tell me about a time you got tough feedback on a design. How did you respond?
- How do you decide on hierarchy, spacing and type on a busy screen? Walk me through a recent example.