Slack Software Engineer Interview Questions
The questions to prepare for a Slack Software Engineer interview. Questions from real interview reports rank first. Updated daily.
Rotate an n x n matrix 90 degrees clockwise in place using transposition and row reversal.
SlackFilter active Slack members by role permissions, remove inaccessible channels, and return deterministically formatted memberships.
SlackEvaluates system design and product thinking for a client interacting with a real-time social API.
SlackAssesses system design understanding of pub/sub and how it applies to real-time app architectures.
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Evaluates incident debugging approach for latency regressions in production services.
SlackAssesses structured debugging methodology from hypothesis to verification.
SlackAssesses operational readiness and experience handling production incidents.
SlackTests ability to write and process multi-table SQL results programmatically.
SlackCompute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.
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Spotify
Meta ITFind the top five Slack users by message activity in a fixed timeframe using a CTE, LEFT JOIN, aggregation, and deterministic ordering.
SlackClean duplicate and missing event timestamps, then reconstruct Slack user sessions using ordered event gaps.
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