Substack Software Engineer Interview Questions
The questions to prepare for a Substack Software Engineer interview. Questions from real interview reports rank first. Updated daily.
Implement Substack's in-memory key value store with separate chaining for average O(1) updates, lookups, and deletes.
SubstackCompute document frequency and logarithmic inverse document frequency for every token in a corpus.
SubstackTests ability to design efficient data structures for range operations.
SubstackEvaluates your data-structure selection and complexity reasoning for time-windowed workloads.
SubstackEvaluates ability to improve performance using caching strategies and precomputation.
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Assesses understanding of React component architecture and lifecycle trade-offs.
SubstackTests ability to model subscription state transitions and data integrity in SQL.
SubstackAssesses React expertise and decision-making around lifecycle management patterns.
SubstackUse ranking to return the nth distinct salary from an employee table.
CiscoExplain merge join versus hash join and relate plan selection to ordering, memory, and input volume.
BookingReturn the first row for each unique value, then rank the k most frequent values.
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