Top 28
Prep plan
Updated weekly · Last refresh Sep 29

Roku Backend Engineer Interview Questions

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

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1
CodingStart here. 8 questions · ~71 min
Anagram Swapping With IndexMedium

Evaluates your ability to design and implement an efficient anagram algorithm using index-based swapping.

Roku
Constant-Space Array ManipulationMedium
Practice

Rotate an array right by k positions in place using constant auxiliary space.

function implementationArraysefficiencyRoku
Anagram Detection EfficiencyMedium

Evaluates algorithmic efficiency for anagram identification in large datasets.

Data StructuresefficiencyRoku
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2
System Design17 questions · ~150 min
Monitor and Debug High LatencyMedium

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

latencymonitoringDebuggingRoku
Millions of Simultaneous Device RequestsHard

Assesses backend scalability design for very high request concurrency from devices.

scalabilityhigh availabilityRoku
Sorting Trade-Offs for StreamsMedium

Evaluates selection of sorting strategies for streaming data and latency or throughput constraints.

Trade-offsdata streamsRoku
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3
More topics3 questions · ~26 min
Distributed Data Consistency StrategiesHard

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

strategiesdistributed systemsdata consistencyRoku
Refactor Legacy Code for PerformanceMedium

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

refactoringperformanceRoku
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