What Questions Should You Ask When Hiring a Product Designer?

A portfolio tells you someone can make things look good. It tells you almost nothing about whether they will move your numbers.

These are the questions I would ask, and what I would listen for.

Start with business impact

Tell me about a design decision that changed a business metric.

Strong designers answer in retention, conversion and revenue. If every answer comes back as visuals, you are looking at decoration rather than impact. That is sometimes what you want, but you should know which one you are buying.

Find out what happens when they hit a wall

Tell me about a time engineering said your design could not be built. What happened next?

This is the most revealing question on the list. It shows whether they design for what can ship, and whether they treat engineers as collaborators or as a department they hand things to and hope.

Test how they decide

How do you choose between two designs?

You want data informed reasoning with craft judgment on top. Not whichever the client prefers, which is abdication. Not whatever tests best, which produces products with no point of view. The good ones use both and can tell you when they overrode the data.

Find their centre of gravity

Where are you strongest: research, interaction, visual, or strategy?

Everybody has one. The goal is matching their strength to the gap on your team, not hunting for someone who is excellent at all four. That person mostly does not exist, and the ones who claim it are usually strongest at interviews.

The question that tells you the most

What would you need to learn about my business before designing anything?

This separates people who design from understanding from people who design from assumptions. The answer you want is specific and slightly demanding. The answer you do not want is that they are ready to start straight away.

Questions I get asked

What is the biggest red flag? Someone who only ever talks about how things looked and never about why it mattered to the business.

Should I set a take home exercise? A small, paid, realistic one can show you their process. A conversation about decisions they have already made usually tells you more, and costs both of you less.