UI/UX design interviews are unusual: the single most important part is the portfolio walkthrough, where you narrate your process and decisions on real projects. The questions test how you think about users, not just how things look. Here are the UI/UX designer interview questions that actually get asked.
Design process
- Walk me through your design process end to end.
- What's the difference between UX and UI?
- How do you do user research, and turn it into design decisions?
- Wireframes vs mockups vs prototypes.
- What is a design system, and why use one?
The portfolio walkthrough (the core)
This is where you win or lose. For each project, narrate: the problem, the users, your research, the decisions you made and why, the trade-offs, and the measurable outcome. Interviewers care far more about your reasoning than the final pixels.
Concepts & critique
- Usability heuristics and accessibility.
- How do you measure if a design is successful?
- How do you handle feedback and disagreement on a design?
- A design critique — they may ask you to critique an existing product.
- How do you collaborate with engineers and PMs?
How to prepare
The walkthrough and critique are entirely spoken. Practise narrating your projects and reasoning out loud until it flows. Greenroom runs spoken interviews with feedback on clarity and structure. Pair it with our explain-your-project guide.
Frequently asked questions
What questions are asked in a UI/UX designer interview?
UI/UX interviews cover your design process end to end, the difference between UX and UI, user research methods, wireframes vs mockups vs prototypes, design systems, usability heuristics and accessibility, measuring design success, handling feedback, design critique, and collaboration with engineers and PMs. The portfolio walkthrough, where you narrate your process and decisions, is the most important part.
How do I present my portfolio in a UX interview?
For each project, narrate the full story: the problem and business goal, who the users were, the research you did, the design decisions you made and why, the trade-offs and constraints, and the measurable outcome. Interviewers care far more about your reasoning and user-centered thinking than the final visuals, so focus on the why behind each decision.
What is the difference between UX and UI?
UX (user experience) is about how a product works and feels — the overall flow, research, information architecture, usability and problem-solving to meet user needs. UI (user interface) is about how it looks — the visual design, layout, typography, color and interactive elements. UX defines the experience and structure; UI brings it to life visually. Strong designers connect both.
How should I prepare for a UI/UX interview?
Prepare a portfolio of two or three projects you can narrate deeply — problem, research, decisions, trade-offs and outcomes — and review your design process, research methods and usability principles. Since the walkthrough and critique are entirely spoken, practise narrating your projects and reasoning out loud with a voice-based mock interview that gives feedback on clarity.