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Design an At-Most-Once Job Scheduler

Last updated: Apr 2, 2026

Quick Overview

This question evaluates a candidate's competency in distributed systems and system design, focusing on at-most-once execution semantics, fault tolerance, idempotency, scheduling and retry policies, and reliable notification delivery.

  • medium
  • Robinhood
  • System Design
  • Software Engineer

Design an At-Most-Once Job Scheduler

Company: Robinhood

Role: Software Engineer

Category: System Design

Difficulty: medium

Interview Round: Onsite

Quick Answer: This question evaluates a candidate's competency in distributed systems and system design, focusing on at-most-once execution semantics, fault tolerance, idempotency, scheduling and retry policies, and reliable notification delivery.

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|Home/System Design/Robinhood

Design an At-Most-Once Job Scheduler

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Robinhood
Jan 14, 2026, 12:00 AM
mediumSoftware EngineerOnsiteSystem Design
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