Design System to Connect People with Similar Interests

System DesignPalantirLast reported July 2025Medium Frequency
Reported
5× across candidate reports
First seen
April 2025
Last reported
July 2025
Reported outcome
mixed

Problem Overview

Design a system (app or internal platform) that helps people who share similar interests discover and connect with each other. The problem is intentionally open-ended. Scope may vary: (1) a general consumer social app, (2) an internal company tool for employee networking around shared hobbies, or (3) a chat application…

  • 3 candidate-reported follow-ups — the exact probes interviewers asked, with the trigger for each
  • The rest of the problem statement — full requirements, constraints, and edge cases
  • Approach and trade-offs — what passing candidates did, and the mistakes that sink people
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Verified Source
Every question is reconstructed from multiple independent candidate reports. Verbatim follow-ups, not invented ones.
Codex Fact-Checked
Technical claims, formulas, and scale numbers are reviewed against primary sources.
Interviewer Follow-ups
The exact follow-ups reported by candidates, with the trigger that prompts each one — plus the mistakes that sink people.
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