Interview Preparation Guide for UX / Product Designers

Design interviews are unusual in that a large part of the evaluation happens through your portfolio presentation, not through Q&A alone — how you narrate your own process is itself part of what's being judged.

What the process usually covers

• A portfolio walkthrough — presenting one or two projects in depth, including the problem, your process, and the outcome, not just final screens.
• A design critique exercise — reviewing an existing product or flow and identifying usability issues, testing your critical eye in real time.
• A whiteboard or exercise prompt — designing a flow for a hypothetical feature, testing how you structure ambiguity into a process.
• Collaboration and process questions — how you work with engineers and PMs, and how you handle disagreement over a design decision.
• Research and validation — how you gather user feedback and how you decide what to act on versus set aside.

Where candidates lose points

The most common gap in portfolio walkthroughs is presenting only the polished final design without the reasoning that led there — constraints, alternatives considered, and why the final direction won. Interviewers are evaluating your process and judgment as much as the visual outcome, and a project that skips straight to "here's the final screen" doesn't give them much to assess.

How to prepare well

Pick two projects and structure each the same way: the problem, constraints you were working within, at least one alternative you considered and rejected (and why), and the measurable or observed outcome. For the whiteboard exercise, practice narrating your thinking out loud — interviewers are listening to your process, not just watching the sketch.

KrackerAI builds a report from your resume and the specific design job description — critique and process questions matched to that company's product, plus company research, so your portfolio narrative connects directly to what that team actually needs.