💻Technical Questions
Q1Walk me through your design process for a new feature.
💡Discovery (user research, competitive analysis) → Define (problem statement, personas) → Ideate (sketching, brainstorming) → Prototype → Test → Iterate. Show how each stage informs the next.
Q2How do you conduct user interviews effectively?
💡Screener criteria, open-ended questions, avoiding leading questions, probing techniques, note-taking strategies, synthesis methods (affinity mapping, themes).
Q3What's the difference between usability testing and A/B testing?
💡Usability: qualitative, small n, observational, reveals why. A/B: quantitative, large n, statistical, reveals what. When to use each in a design process.
Q4How do you design for accessibility?
💡WCAG guidelines, color contrast (4.5:1 AA), keyboard navigation, screen reader compatibility, alt text, font size minimums. Tools: axe, WAVE. Not just compliance — inclusive design mindset.
Q5Describe a time you had to design with significant technical constraints.
💡How early you involved engineering, how constraints changed your design choices, what trade-offs you made, how you communicated the impact to stakeholders.
🧠Behavioral Questions
B1Tell me about a design decision you pushed back on. Why?
💡Show design judgment, data-backed reasoning, respectful challenge. What evidence you used. What the outcome was.
B2Describe your best and worst design projects.
💡Best: show what made it great (process, collaboration, outcome). Worst: genuine self-reflection on what you'd do differently. Both reveal self-awareness and growth mindset.
B3How do you work with engineers who push back on your designs?
💡Understand constraints, distinguish 'can't do' from 'too complex right now', adapt designs creatively, build trust over time.
🎯Situational Questions
S1Redesign the checkout experience for an e-commerce app. Walk me through your approach.
💡Start with research (where do users drop off?), define the problem precisely, explore multiple directions, choose and prototype, plan for measurement.
S2You have 1 week to design a new feature with no user research. What do you do?
💡Desk research (competitor analysis, existing data, support tickets), guerrilla testing (5 users in hallway/Slack), assumptions documented, design for iteration.
Must-Know Topics
- ✓Design Process (Double Diamond, Design Thinking)
- ✓User Research Methods (interviews, usability tests, surveys)
- ✓Wireframing & Prototyping (Figma)
- ✓Information Architecture
- ✓Interaction Design Patterns
- ✓Accessibility (WCAG 2.1)
- ✓Data Interpretation (analytics, metrics)
- ✓Design Systems
Common Interview Mistakes to Avoid
- ✗Showing final designs without explaining the process
- ✗Not mentioning user research or validation
- ✗Portfolio with too many visual designs, too few insights
- ✗Not asking clarifying questions before solving the design challenge
- ✗Ignoring edge cases and error states in designs
Frequently Asked Questions
How important is the portfolio for UX designer interviews?▼
Portfolio is the most critical element — it's your interview before the interview. Each case study should show: the problem, your process (not just outputs), insights from research, design decisions, and measured outcomes. 3 deep case studies beat 10 surface-level ones.
Do UX designers need to know HTML/CSS?▼
Not required, but valuable. Knowing basic HTML/CSS helps you design with implementation realities in mind and communicate better with engineers. Frontend fluency is a differentiator at tech-heavy companies. Coding is not expected in UX interviews.
What tools should a UX designer know for interviews?▼
Figma is the industry standard (2025). Knowing it deeply is more valuable than knowing many tools. Also valuable: FigJam (workshops), Maze or UserTesting (usability testing), Miro (ideation). Don't list tools you can't demo confidently.
How do I prepare for the design challenge in UX interviews?▼
Practice out loud — articulate your thinking as you design, don't design silently. Ask 3–5 clarifying questions before starting. Sketch multiple directions before committing. Explicitly mention trade-offs, constraints, and what you'd test. Time-box your approach.
What metrics should a UX designer track to show impact?▼
Task completion rate, error rate, time-on-task (usability), NPS, CSAT, conversion rate, retention, support ticket volume reduction. Learn to pull basic metrics from Mixpanel or Amplitude — designers who understand data have a significant career advantage.
Ready for your UX Designer interview?
Make sure your resume gets you to the interview stage first. Get a free ATS score.
Score My Resume Free →