Design a high-throughput ad exchange

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Quick Overview

This question evaluates a candidate's ability to design scalable, high-throughput, low-latency distributed backend systems for real-time ad exchanges, assessing competencies such as API shape, request validation and enrichment, auction flow, traffic partitioning, storage choices, fault tolerance, and operational event logging.

Design a high-throughput ad exchange

Company: Roku

Role: Backend Engineer

Category: System Design

Difficulty: medium

Interview Round: Onsite

Overview: This question evaluates a candidate's ability to design scalable, high-throughput, low-latency distributed backend systems for real-time ad exchanges, assessing competencies such as API shape, request validation and enrichment, auction flow, traffic partitioning, storage choices, fault tolerance, and operational event logging.

Read the full Roku Backend Engineer interview experience this question came from

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Roku
Feb 25, 2026
mediumBackend EngineerOnsiteSystem Design
7
0
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