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Sliding Window Interview Questions at Uber — Interview Guide

How to approach Sliding Window Interview Questions in a Uber interview: the optimal approach, what Uber interviewers look for, and company-specific tips.

Updated 2026-09MediumSliding Window

The problem at Uber

Uber uses this problem to assess real-time systems and marketplaces. Expect Uber-specific follow-ups that tie the solution back to production reasoning and the company's engineering bar.

What Uber looks for

Real-time and distributed systems intuition.
Geospatial and concurrency reasoning.
Pragmatic, production-minded engineering.
Ownership of features end-to-end.

Uber-specific tips

Know geospatial indexing (geohash/S2) and real-time fan-out patterns.
Be concrete about consistency models and what you trade off.
Have an on-call war story or two ready.

Return the window itself, not just its length.
Handle a sliding window over a stream with a fixed memory budget.
Generalize to 2D sliding windows on a matrix.

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