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Design Online Chess Matchmaking

Last updated: Jun 21, 2026

Quick Overview

This question evaluates a candidate's ability to design scalable, low-latency matchmaking backend systems, covering distributed service decomposition, queuing and worker mapping, state ownership, progressive widening of search criteria, and concerns like concurrency, duplicate requests, cancellations, failures, fairness, scalability, and observability. It is commonly asked to assess architectural trade-offs in real-time distributed systems and the capability to apply system design principles to operational requirements; category: System Design; level of abstraction: practical application grounded in conceptual architectural understanding.

  • hard
  • OpenAI
  • System Design
  • Software Engineer

Design Online Chess Matchmaking

Company: OpenAI

Role: Software Engineer

Category: System Design

Difficulty: hard

Interview Round: Technical Screen

Quick Answer: This question evaluates a candidate's ability to design scalable, low-latency matchmaking backend systems, covering distributed service decomposition, queuing and worker mapping, state ownership, progressive widening of search criteria, and concerns like concurrency, duplicate requests, cancellations, failures, fairness, scalability, and observability. It is commonly asked to assess architectural trade-offs in real-time distributed systems and the capability to apply system design principles to operational requirements; category: System Design; level of abstraction: practical application grounded in conceptual architectural understanding.

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|Home/System Design/OpenAI

Design Online Chess Matchmaking

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OpenAI
May 24, 2026, 12:00 AM
hardSoftware EngineerTechnical ScreenSystem Design
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