I've sat on both sides of the Shopify behavioral interview (went through the loop twice in different years, and I've talked to a number of people who went through it recently). Here's a clear-eyed picture.
Shopify has a specific set of internal values that map pretty directly to behavioral question themes. They care about:
Impact over effort. They want examples of outcomes, not activity. A story about staying late to fix a bug is less interesting than a story about why the bug happened and what you changed to prevent the next 10 bugs. Frame everything in terms of what changed in the world as a result of you.
Craftsmanship. For engineers especially, they want to know you care about code quality, not just shipping. Have a story about a time you said something was ready but it wasn't, and what you did about it.
Merchant empathy. This is the most Shopify-specific one. Even if you're interviewing for a deeply technical role, they'll often ask something like 'tell me about a time you built something and then realized you'd misunderstood your customer.' The word 'merchant' may or may not appear, but that's the spirit. The right answer is not 'I went back and asked more questions.' The right answer involves specific things you learned and specific changes you made.
Autonomy and context-setting. Shopify is famously flat and remote-first. They want people who can set their own direction, not wait for someone to tell them what to do. Questions like 'tell me about a project you initiated' or 'how did you navigate ambiguity when your manager was unavailable' are common.
For format: in my experience it was typically 2 behavioral interviews in the final loop, each 45 minutes. The interviewers take notes and compare after. They use a structured rubric, so inconsistent stories hurt you even if each story individually sounds good.
Prepare 5-6 strong STAR stories that you can slice across different questions. Don't prepare one story per question type, because they will ask follow-ups that expose whether the story is real or manufactured.