Google Product Design Interview: Practice Questions

Hola, Product Designers! ✨ Interview stages, formats and timing can vary by role and team. Confirm your process with your recruiter.

Below are practice prompts and a framework for answering open-ended design questions.

Google product design interview practice prompts

• How would you design a phone for deaf people?
• Design a grocery shopping app or marketplace.
• What's your favorite product, and how would you improve it?
• What's your favorite Google product, and how would you improve it?
• Walk us through one project from your portfolio, end to end.
• How does your design process typically begin?
• Design an alarm clock for blind people.
• If you had unlimited resources, how would you improve Google Translate?
• How would you design Gmail labels so more people use them?
• What is an example of a poorly designed product? How would you fix it?
• What makes a great product?
• Tell me about a time you disagreed with a PM or engineer. What happened?

Preparing for Google's design interview

Stages vary by role and team, so treat the stages below as preparation categories. See Google’s hiring guidance and confirm your process with your recruiter.

Timing varies by role and team. It's a marathon: one Google Design story describes landing a UX research role after 15 interviews across multiple attempts.

How to answer product design questions: the BUS framework

Use this three-step approach — Business objective, User problems, Solutions — for any open-ended design question:

Step one: business objective

Many applicants skip this and jump straight into unorganised design ideas. For interviewers, that's a major red flag.

Before touching user problems or solutions, make the business circumstance and goal clear. Knowing the business context makes every later design decision easier — especially when the interviewer's question is deliberately ambiguous.

Step two: user problems

• Select a user type. If your interviewer has already named a user group, skip ahead.
• List user problems. Envision that user with the current product or service you're trying to replace — what breaks for them?
• Prioritize. Pick one to three problems, usually ranked by how painful the situation is for the user.

Step three: solutions

• List solutions. Propose a viable solution for each problem, and rank them from 1 (low) to 3 (high) on user value and ease of implementation.
• Summarize. Restate the original question and briefly describe the product you'd build and why. It signals you're done — and shows strong communication skills.

Questions by round, and how to answer each type

Portfolio screen and portfolio presentation

Prepare to present and discuss your portfolio. Confirm the audience, duration and format with your recruiter.

Expect questions like:

• What was your working hypothesis as you began designing?
• How did you incorporate accessibility into your design?
• What would you do differently if you ran this project again?
• How did you measure whether the design worked?

How to answer: prepare two or three case studies with a clear arc: problem, constraints, your specific role, decisions, and measured outcomes. Rehearse to the time your recruiter specifies, leaving room for questions. Our guide on how to nail a portfolio interview covers the full structure, and how to ace the initial phone interview helps with the screen itself.

Design exercise (whiteboard challenge)

A practice design prompt, such as "design X for Y", can be worked through on a whiteboard or FigJam. Confirm the interview format and time limit with your recruiter. Interviewers care about your process, not polished pixels. Timebox it: clarify the prompt, define users and problems, sketch a solution, then summarize. You can also practice a short app critique of an existing product.

Here are two worked examples using the BUS framework.

Q: How would you design a phone for deaf people?

First, clarify the business objective. Ask your interviewer:

"Are we aiming for partially deaf, fully deaf, or both? Mobile phones or another type of phone? Adults or people of all ages?"

Once you have clarity, identify the possible user problems and list them:

• Hearing ringtones and text alerts is difficult.
• Video calling is difficult due to low resolution or a spotty network.
• It is difficult to sign while holding the phone with one hand.

Then propose solutions mapped to each problem:

• Flashing LED lights and strong vibration to indicate calls and texts
• High-resolution front-facing camera for signing on video calls
• Hands-free case and accessories

End your answer with: "This is a quick outline of how I would initiate designing a phone for deaf people. What do you think?"

Q: Design a grocery marketplace or app

First, clarify the business objective:

"Is the grocery app affiliated with a specific store? Does it recommend, or does it buy and deliver? Is it for the stores or the customers? Urban or rural users?"

Then list the possible user problems:

• Consumers often don't have time to shop for groceries
• It's hard to remember what to buy and find the right item among the aisles
• It's hard to transport a large amount of groceries from store to home

Then the solutions:

• Price comparison across stores
• Grocery-list autofill and related-product suggestions
• A delivery option

End with: "This is a quick overview of how I would design a grocery marketplace. What do you think?"

Product sense and critique questions

These test whether you think about products the way Google does — users first, then business.

Q: What's your favorite product, and what would you improve?

Start by explaining the product with an overview of its top features and how you use it:

"One of my favorite products that I use almost daily is X, a workout tracker on mobile and desktop that lets me create, track, and record weightlifting and cardio sessions. X also has a social component — users can track body measurements, share progress photos, and share the workouts they created. The in-workout experience is really smooth and lets me focus on safely doing my exercises."

Then say why you like it and how it makes your life easier:

"I like this product because it makes my workouts more efficient. The countdown timer tracks my overall workout time, and I can easily gauge my progress over the past few months."

Close with concrete improvements:

"If I could improve X, I'd start with —

• Live GPS tracking of outdoor cardio, plus better swim-lap integration
• More exercises and new machines to record
• Logic for more variance in existing exercises
• A wearable companion app to track reps automatically

I believe these additions would make X even better."

Q: How does your design process typically begin?

Share more than one approach to highlight your adaptability:

"I typically begin with research and analysis. It helps me understand what competitors are doing and how consumers perceive them — and I use that to identify the challenges users face so I know exactly what to solve."

More design exercise and product questions to practice

• If you have infinite resources, and the year is 2030, how would you improve Google Translate?
• What is your favourite Google product and how would you improve it?
• Design an alarm clock for blind people
• Design a website that makes GIFs
• What is an example of a poorly designed product? Why, and how would you improve it?
• How would you improve the Pinterest experience?
• How would you design Gmail labels so that people would use them more?
• What makes a great product?
• Design a product Google Cloud should offer
• What would you build with the entire world's traffic data?
• Design a smart shoe

Behavioral questions

Behavioral questions can explore comfort with ambiguity, collaboration, and bias to action. Practice with:

• Tell me about a time you received conflicting feedback from a PM and an engineer.
• Tell me about a project that failed. What did you learn?
• How do you give difficult feedback to a teammate?
• Why Google?

How to answer: prepare three to five real project stories in STAR format (Situation, Task, Action, Result) and reuse them across questions. Pick stories that show you navigating ambiguity and working across functions, not just shipping pixels.

Cross-functional and technical questions

Usually a conversation with an engineer, PM, or UX writer about how you actually work:

• How do you hand off designs to engineering?
• How do you approach accessibility in your work?
• How do you work with design systems and component libraries?
• How do you decide what to prototype versus spec?

How to answer: be concrete about tools and rituals — design tokens, engineering pairing, accessibility audits — and show you treat engineers and PMs as design partners, not ticket recipients.

Tips to nail your interview

• Start with clarifying questions. Interviewers ask ambiguous questions on purpose. You're not obligated to answer straight away — take 15 to 30 seconds and ask things like "Can I wireframe this out first?" or "How detailed would you like the design to be?"
• Proactively show a positive signal. Give background about your work as you go. Thirty-second "tidbits" of context are typically beneficial and reduce the odds of being misread.
• Give context. Contextual remarks show you understand the motivations behind your actions rather than simply carrying them out. The background you provide can significantly change how you're perceived.
• Know how to get help. Interviewers will usually assist, but some detest the word "hint." Instead say: "My assumptions are X and Y, and I'm thinking about doing Z — do you think I'm going in the right direction? Are my assumptions off?"

Interviewing at other FAANG companies too? Practice with our top 20 Meta product design interview questions. And if you're still mapping the road to a role like this, the product design career path breaks down the skills and levels.

A mock interview with an experienced professional can help you prepare. Book a session with one of ADPList's product design mentors. Free sessions are available. Check individual mentor profiles for relevant experience. For a wider look at where to find interview help, our guide to the best mentorship platforms compares the free and paid routes.