Shopify Software Engineer Interview Questions

I would queue events, retry failures carefully, and track delivery status so nothing is lost silently. Then I’d make the system idempotent because retries can otherwise duplicate work on the receiver side. The best webhook design is simple for users and resilient for the platform.

I would keep the schema clear, support the most common product and cart queries efficiently, and avoid overfetching. Then I’d think about pagination, caching, and authorization so the API stays fast and safe at scale. A good answer shows both API design and product awareness.

I would decide what the source of truth is, how conflicts are resolved, and how quickly updates should propagate. Then I’d make sure the cart can recover cleanly if a device is offline or a sync fails. The goal is to keep the experience consistent without losing user intent.

I would focus on correctness, readability, design, and whether the change matches the problem being solved. Then I’d give feedback that is specific and respectful, so the review helps the author improve the work. Good code review is about raising quality without slowing the team down.

I would define what identity to limit on, how bursty traffic should be handled, and where enforcement should happen. Then I’d make the limits observable so the team can tune them over time. Good rate limiting protects the platform without punishing normal users.