Preparing a 30-minute portfolio walkthrough

9 min read · Updated 6 November 2026

A walkthrough isn't a tour of everything you've made. It's a chance to show how you think on one piece of work.

Pick one project

Choose the project closest to the role, where you made the decisions. Recency matters less than relevance.

Cut it to three decisions

• The problem. What was wrong, and how you knew.
• Three decisions. What you chose, what you didn't, and why.
• The result. What happened after it shipped.

Time it

Aim for 20 minutes of talking and 10 of questions. Rehearse once out loud with a timer; most people run long.

Prepare for the follow-up questions

"What would you do differently?" and "How did you work with engineering?" come up in almost every walkthrough. Have a short, honest answer to each.