REPLAY EPISODE: A candidate takes on their very first system design mock interview. The problem: designing a pipeline that connects rights management, financial accounting, and payments at Netflix scale. They need to figure out how to combine movie rights data with royalty fees and ensure accurate payouts downstream.

The interviewer, a seasoned Netflix engineer who has led dozens of design interviews, pushes the candidate to think through trade-offs like consistency vs. availability, synchronous APIs vs. event-driven systems, and how to handle failures across dependent services. The feedback at the end breaks down what the candidate did well, what could be stronger, and how to level up toward L6 readiness.

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See the interviewer’s feedback and transcript here: https://interviewing.io/mocks/netflix-system-design-payment-pipeline

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