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Roku Backend Engineer Interview Questions

The questions to prepare for a Roku Backend Engineer interview. Questions from real interview reports rank first. Updated weekly.

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Handle Sudden Concurrency SpikeHard

Tests capacity planning and backend design for sudden concurrency surges.

scalability
Roku
Monitor and Debug High Latency
Medium

Assesses observability practices and debugging approach for latency issues in production.

latencymonitoringDebugging
Roku
SQL vs NoSQL Choice
Medium

Assesses decision-making trade-offs when selecting SQL or NoSQL for backend features.

nosqlsql
Roku
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Constant-Space Array ManipulationHard

Evaluates algorithmic ability to meet constant-space constraints while manipulating arrays.

function implementationefficiencyArray Manipulation
Roku
Sorting Algorithm Trade-Offs
Medium

Evaluates understanding of sorting trade-offs and practical selection in production constraints.

Trade-offsproduction
Roku
Search at Massive Scale
Hard

Tests ability to design and optimize search systems for large datasets and performance constraints.

performancescalability
Roku
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Refactor Legacy Code for Performance
Medium

Assesses how you improve legacy systems while managing risk and maintaining correctness.

refactoringperformance
Roku
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Distributed Data Consistency Strategies
Hard

Tests your understanding of distributed consistency techniques and how to apply them to real systems.

strategiesdistributed systemsdata consistency
Roku