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Roblox Data Engineer Interview Questions

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

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1
SQL & Data ManipulationStart here. 7 questions · ~83 min
Data Modeling and QueriesMedium
Practice

Model user activity data and summarize experience engagement with joins, aggregation, and a CTE.

Joinsdata managementAggregationsRoblox
Complex SQL With WindowsHard
Practice

Join Roblox activity data and assign per-user session and per-session event sequence numbers.

Window FunctionsJoinsCTEsRoblox
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2
Pipelines5 questions · ~59 min
Multi-Year Retention SystemHard

Design a reliable multi-year Roblox pipeline for cohort retention metrics, historical backfills, identity changes, and data quality.

system designdata pipelinesuser retentionRoblox
Warehouse for Batch and Low LatencyHard

Design a Roblox data warehouse that combines reliable batch reporting with low-latency analytics, consistent data models, and recoverable pipelines.

analyticsdata latencyBatch ProcessingRoblox
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3
Behavioral & Leadership4 questions · ~47 min
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4
More topics4 questions · ~47 min
Client vs Server LoggingHard

Design a reliable client and server logging strategy for ML data collection, debugging, privacy, and feedback loops.

client-sidedata ingestiondata collectionRoblox
Coding ChallengeMedium
Practice

Demonstrate an end-to-end solution process using a sliding window to find the longest valid array segment.

leetcodeArraysAlgorithmsRoblox
Explain Subnetting ConceptMedium

Tests how CIDR prefixes divide IPv4 networks into subnets and determine routing boundaries, address ranges, and usable hosts.

network functionsnetworking basicstechnical fundamentalsRoblox
Explain Ramdisk ConceptMedium

Tests understanding of RAM-backed storage, including tmpfs behavior, volatility, performance trade-offs, and appropriate use cases.

linux tuningtechnical fundamentalsRuntime PerformanceRoblox

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