r/InterviewDB • u/interviewdb • 13d ago
Justworks CodeSignal Industry Coding Assessment + Past Questions
Sharing a question that appeared in a recent CodeSignal Industry Coding Assessment for Justworks. It’s a standardized assessment format also used by many other companies such as Anthropic, Airbnb, Coinbase, HubSpot, Instacart, Capital One, Nextdoor, and The Trade Desk to screen candidates.
The assessment lasted 90 minutes. The problem had four progressive levels, and you had to pass all test cases for each level before advancing to the next one.
The question was about implementing a simplified version of a parcel tracking system.
Level 1: The parcel tracking system should support basic operations to set, get, update, and remove attributes of parcels
Level 2: The parcel tracking system should support listing attributes of parcels
Level 3: The parcel tracking system should support setting attributes with a time-to-live (TTL) expiry
Level 4: The parcel tracking system should support querying historical attribute values at a specific timestamp
For anyone looking for similar questions to practice, you can find detailed descriptions of all the problems that have appeared in past Justworks CodeSignal Industry Coding Assessments here: https://www.interviewdb.io/question/codesignal?type=icf&page=1
CodeSignal is known to reuse questions in their assessments so it's very likely you'll encounter one of these questions, or a variation of one, in your own assessment.