Amazon·Software Engineer·Onsite - System Design / Architecture
Apr 2026
Amazon interview for what seemed like a backend or platform engineering role, centered on designing an order confirmation email service for the checkout flow. Pretty focused scope, but there's more to it than you'd think.
- Design an email service for the checkout experience that sends order confirmation emails to customers.
“I started with the happy path and kind of assumed reliable delivery, which was a mistake.” The rest of the author's notes on Software Engineer interview at Amazon, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.
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