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Level: Mid-Level
Round: Online Assessment · Type: Coding · Difficulty: 3/10 · Duration: 90 min · Interviewer: Unfriendly
Topics: Hash Table, Data Structures
Location: San Francisco Bay Area
Interview date: 2026-03-06
I completed an online assessment involving implementing an in-memory database.
The assessment was similar to an in-memory database, and I was told there are similar questions online. The task was to implement add, delete, lock, and unlock operations for a record, using only 1-2 hash maps. I was told that the problem itself may have errors, so I should rely on the CodeSignal test cases. It was also mentioned that not completing all parts within the 90-minute time limit is acceptable as long as I pass the required test cases.