Tradedesk interview questions

Showing 1–5 of 5 results

• Debug a Frontend Component That Shows Wrong API ResultsMedium

  A front-end debugging question in which a React component that fetches data sometimes shows results that do not match the current input, even though each API response is correct. It tests how the candidate reproduces a timing-dependent bug, finds the root cause, fixes it in the effect, handles cancellation errors, and verifies the fix with a deterministic test.

  TradedeskFrontend EngineerSoftware Engineering FundamentalsOnsite
• Fetch and Cache Daily Stock Prices Across a Date RangeMedium

  This problem tests your ability to build a resilient data-fetching client that handles network unreliability, data integrity validation, and efficient caching patterns.

  TradedeskSoftware EngineerSoftware Engineering FundamentalsOnline Assessment
• Implement a Publish-Subscribe Event Bus in JavaScript or TypeScriptMedium

  A front-end coding question asking the candidate to implement an in-process publish-subscribe utility in JavaScript or TypeScript with subscribe, publish, and unsubscribe. It tests API design, choice of data structures, safe iteration when subscribers change during a publish, isolation of subscriber errors, and cleanup that avoids memory leaks.

  TradedeskFrontend EngineerSoftware Engineering FundamentalsOnsite
• Object-Oriented Design of an Elevator Control SystemMedium

  An object-oriented design question asking the candidate to model an elevator control system: its classes, their responsibilities, and how a button press becomes an elevator stop. It tests requirement scoping, a clear per-car state model, stop ordering and dispatch policies that can be swapped out, handling of out-of-service cars and duplicate requests, and testability.

  TradedeskFrontend EngineerSoftware Engineering FundamentalsOnsite
• Process Operations in a Timestamped In-Memory DatabaseMedium

  This problem tests your ability to design an in-memory data store with complex querying and expiration requirements using efficient nested data structures.

  TradedeskSoftware EngineerCoding & AlgorithmsOnline Assessment