What is the difference between UI and UX design?
What the interviewer wants to hear
- UX is the overall experience and how well the product solves the user problem
- UI is the visual and interactive layer: layout, type, colour, components
- UX includes research, flows and information architecture
- They depend on each other; good UI cannot save a broken flow
Model answer
UX design is about the whole experience a person has while trying to reach a goal with a product. It covers research, understanding needs, user flows, information architecture and testing whether people can actually complete tasks. UI design is the visual and interactive layer people touch: layout, typography, colour, buttons, icons and interaction states like hover or error. A simple way to say it is that UX decides what the product should do and how the journey works, while UI decides how each screen looks and feels. They depend on each other. A beautiful interface cannot fix a confusing flow, and a good flow can still fail if buttons are hard to see or read. In most product teams one designer does both, moving between research and visual detail.
Can you answer it under time pressure?
Take a timed easy round and get scored on every answer.
More easy UI/UX Designer questions
- Walk me through your design process.
- What is usability testing and how would you run a simple one?
- Why does accessibility matter, and what basic things do you check in your designs?
- What is a design system and why do teams use one?
- How do you create visual hierarchy on a screen so users know what to look at first?
- What does designing mobile first mean, and why is it useful?
- What are Nielsen's usability heuristics, and how do you use them in your work?
- How do you set up and use components in Figma so a design stays consistent and easy to change?
- What makes a good form? Walk me through the principles you follow.