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Applied Scientist Interview Questions

Practice 9403 coding, system design and machine learning questions from 546 companies, sorted by role, topic and interview round. Every question has step-by-step hints, a code runner that supports 8 languages and an AI mentor; members also get the full solution walkthrough.

9403
Questions
546
Companies
11
Topics
8
Languages

Showing 1–3 of 3 results

  • AmazonMediumApplied Scientist
    Design an advertiser metrics tracking platform

    This question tests your ability to design a flexible, object-oriented system for ingesting, processing, and querying real-time advertising performance metrics.

    Software Engineering FundamentalsTechnical ScreenSystem DesignOOPDesign Patterns
  • OpenAIMediumApplied Scientist
    Extensible card-hand ranking: three of a kind, flush, pair and a discard rule

    A three-part object-oriented coding exercise built around a card game: rank hands by three of a kind, pair and high card, insert a flush category, then add a discard rule that removes hands that are not a pair, returning a log of each game. It tests extensible design, deterministic tie-breaking and absorbing rule changes cleanly.

    Software Engineering FundamentalsOnsite
  • eBayEasyApplied Scientist
    Docker optimization, container fundamentals, and CI/CD for an ML model service

    Practice explaining how Docker images, layers, build caching and container isolation work, then optimizing the image and runtime of a Python ML inference service. The question also covers continuous integration, delivery and deployment for shipping a containerized model safely.

    Software Engineering FundamentalsTechnical Screen